Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
12d Megapack_2_XL_System_Specification
T = SLn ' ®®��Nft=Mm-M_ Megapack 2 XL System Specification Revision 2.0 CONFIDENTIAL INFORMATION - SHARED UNDER NDA ONLY PRODUCT SPECIFICATIONS All specifications and descriptions contained in this document are verified to be accurate at the time of printing. However, because continuous improvement is a goal at Tesla, we reserve the right to make product or documentation modifications at any time, with or without notice. The images provided in this document are for demonstration purposes only. Depending on product version and market region, details may appear slightly different. This document does not create contractual obligations for Tesla or its affiliates and is provided without warranty of any kind, except to the extent expressly agreed in a contract. LATEST REVISIONS Documents are periodically updated. To ensure you have the latest revision of this document, visit the Tesla Partner Portal at https://partners.tesla.com/. ERRORS OR OMISSIONS To communicate inaccuracies or omissions in this document, reach out to your Tesla representative. COPYRIGHT ©2026 TESLA, INC. All rights reserved. All information in this document is subject to copyright and other intellectual property rights of Tesla, Inc. and its licensors. This material may not be modified, reproduced or copied, in whole or in part, without the prior written permission of Tesla, Inc. and its licensors. Additional information is available upon request. The following are trademarks or registered trademarks of Tesla, Inc. in the United States and other countries: TESLA All other trademarks contained in this document are the property of their respective owners and their use herein does not imply sponsorship or endorsement of their products or services. The unauthorized use of any trademark displayed in this document or on the product is strictly prohibited. CONTENTS Symbols in this Publication..............................2 4.1.2.3 Microgrid Control Elements..........................45 1 Introduction.................................................. 3 4.1.3 Battery Switches...............................................45 1.1 Additional Information..............................................3 4.2 Telemetry..............................................................46 4.3 Configurable Parameters...................................... 49 2 Megapack System Components................... 4 4.4 Response Time..................................................... 50 2.1 Megapack................................................................4 5 Powerhub................................................... 54 2.1.1 Product Configurations........................................6 2.1.2 Battery Modules..................................................8 6 Standards and Regulations.........................55 2.1.3 Thermal System...................................................9 6.1 Safety Certification and Hazard Mitigation............ 55 2.1.4 Customer Interface Bay.......................................9 6.2 Environmental Compliance....................................55 2.1.5 Enclosure...........................................................10 6.3 Cybersecurity.......................................................56 2.2 Tesla System Controller.........................................10 2.3 Hazard Mitigation Features.....................................11 7 Site Design Considerations.........................57 7.1 Routes and Zones.................................................. 57 3 Megapack Specifications............................ 13 7.1.1 Typical Vehicles................................................. 63 3.1 Power and Energy...................................................13 7.2 Site Components.................................................. 63 3.2 Round-Trip Efficiency............................................14 7.3 Transportation Considerations..............................64 3.3 Megapack Maximum Auxiliary Power, Auxiliary Energy, and Battery Inverter Losses.............................16 7.3.1 Ocean Shipping Guidance.................................64 3.3.1 Megapack Maximum Auxiliary Power.................16 7.4 Storage Considerations.........................................64 3.3.2 Megapack Auxiliary Energy over 24 Hours........ 17 7.5 Installation Considerations....................................64 3.3.3 Auxiliary Energy during Heat Mode.................. 20 7.5.1 Anchoring......................................................... 64 3.3.4 Battery Inverter Losses......................................21 7.5.2 Foundation........................................................65 3.4 Interconnection Data.............................................22 7.5.3 Megapack Clearance........................................65 3.5 Ride-Through and Anti-Islanding Features........... 22 7.5.4 Exposures and Fire Clearances.........................67 3.5.1 Voltage Ride-Through.......................................22 7.6 Remote Connection..............................................68 3.5.2 Frequency Ride-Through..................................24 7.7 Wiring Interfaces...................................................68 3.5.3 Ride-Through Operation Alerts........................ 25 3.5.4 TripAccuracy26 8 Operation, Maintenance, and Service.........70 3.5.5 Anti-Islanding Features....................................26 8.1 Maintaining Access, Routes, and Zones.................70 3.6 Dimensions and Mass............................................27 8.1.1 Lift Plan..............................................................70 3.7 Ambient Temperature and Elevation......................27 8.2 Safe Work Environment Requirements...................71 3.8 Thermal Specifications..........................................27 8.3 Maintenance and Service Considerations..............71 3.9 Enclosure Specifications and Ratings................... 28 8.3.1 On-Site Maintenance Infrastructure...................71 3.9.1 Noise Specification and Guidance.....................29 8.3.2 Maintaining the Perimeter.................................73 3.9.2 Enclosure Color................................................29 8.3.3 Maintaining the Enclosure.................................73 8.3.4 Environmental Considerations..........................73 4 Tesla System Controller Specifications....... 31 8.3.5 Energy Meters..................................................73 4.1 Controls................................................................. 31 8.4 Decommissioning and Disposal.............................74 4.1.1 Archetypes.........................................................31 8.4.1 Safety................................................................74 4.1.1.1 Utility Archetypes........................................... 31 8.4.2 Decommissioning.............................................74 4.1.1.2 C&I Archetypes.............................................33 4.1.1.3 Archetype Topologies....................................35 Appendix A: Glossary....................................75 4.1.2 Control Elements...............................................42 Revision History.............................................78 4.1.2.1 On-Grid Control Elements.............................42 4.1.2.2 Islanding Control Elements........................... 44 SYMBOLS IN THIS PUBLICATION Symbols in this Publication This publication may use the following symbols to highlight important information: I DANGER: Indicates a hazardous situation which, if not avoided, could result in severe injury or death. _J WARNING: Indicates a hazardous situation which, if not avoided, could result in injury. CAUTION: Indicates a hazardous situation which, if not avoided, could result in minor injury or damage to the equipment. i NOTE: Indicates an important step or tip that leads to best results but is not safety- or damage-related. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 2 INTRODUCTION 1 Introduction Electric grids around the world are embarking on the journey to 100% sustainable, reliable, and affordable energy. Tesla's mission is to enable and accelerate this transition. Energy storage is required to make variable renewable energy such as solar and wind reliable and affordable. It also enables more efficient utilization of all electricity-generating assets supplying power to the local grid. This efficiency gain translates directly into savings for behind-the-meter sites and revenue for front-of-meter sites, while also helping to stabilize the grid and prevent outages. The Megapack 2 XL System (Megapack System) is an all-in-one industrial-scale energy storage system built to address this mission. Although the sustainable energy transition is a global mission, different locations and grids have diverse near-term and long-term needs. This is why the Megapack System is also built to be scalable and configurable to the space, power, and energy requirements of any site from 1 MWh to 1 GWh+. The Megapack System also supports various Archetypes (Archetypes on page 31), which are types of projects that specify metering installation requirements, pre-defined control functions, and system behavior based on the project's electrical topology. This publication provides a high-level overview of the Megapack System and its Archetypes for customers who are considering Megapack for their projects in support of various applications, including: • Renewable Smoothing— Balancing the power output of renewables to the grid by storing and discharging energy • Demand Support— Discharging energy during peak demand to support distribution infrastructure • Infrastructure Investment— Postponing costly grid infrastructure upgrades by storing power at a single location • Voltage&Frequency Regulation—Stabilizing voltage and frequency levels by absorbing and injecting reactive and real power • Market Participation— Providing energy support to the grid in response to system operator alerts • Microgrid— Building a localized grid that can disconnect from the main power grid The Megapack System consists of one or more Megapack 2 XL units (Megapacks) and the Tesla System Controller. Each Megapack contains battery modules with integrated inverter modules, a thermal system, and the Customer Interface Bay, all factory-integrated within an enclosure. The Tesla System Controller uses intelligent software to control and monitor Megapacks across the Megapack site. 1.1 Additional Information Visit the Tesla Partner Portal at https://partners.tesla.com/to find detailed information referred to in this document. The Partner Portal also hosts a variety of video content (select the Videos tab). Visit Tesla.com to find additional resources that are available to the public: • Industrial Lithium-Ion Battery Emergency Response Guide -https://www.tesia.com/f`irstresponders/ • Megapack on Tesla.com - https://www.tesla.com/Megapack • Megapack Resources on Tesla.com -https://www.tesla.com/support/energylmegapack/resources Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 3 MEGAPACK SYSTEM COMPONENTS 2 Megapack System Components A Megapack System consists of the following components: • One or more Megapacks—part number 1848844-XX-Yl (Megapack on page 4) • Tesla System Controller: Standard Tesla System Controller— part number 1471208-XX-Yl, or Large Tesla System Controller— part number 1700130-XX-Yl or 1459155-XX-Yl (Testa System Controller on page 10) Where X is a number between 0 and 9, and Y is a letter. Figure 1. Example Megapack Site E p - F" a/•,_ n�r -K>i� :ti�..ppee;;vftc'v%-.., �� ..- 4�"g �,:., 2.1 Megapack Megapack is a fully integrated battery energy storage unit capable of charging and discharging real power and injecting and absorbing reactive power. Megapack converts power for storage in rechargeable lithium-ion battery modules and is designed to support a range of AC power and energy. A Megapack unit consists of the following components: Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 4 MEGAPACK SYSTEM COMPONENTS Figure 2. Megapack Overview ■■■`m low mow I 010 ' 0 ' 00 01r ' 0 ' I 1. Battery module bays (Battery Modules on page 8) 2. Thermal cabinet (Thermal System on page 9) 3. Customer Interface Bay (Customer Interface Bay on page 9) 4. Thermal roof (Thermal System on page 9) 5. IP66 enclosure (Enclosure on page 10) Figure 3. Megapack Internal Architecture Megapack AC Circuit Breaker Battery Module Inverter Module Battery Tray Auxiliary Battery Module Power Supply Inverter Module Battery Tray Internal Thermal H11 Controls Management AC AC Output Terminals Internal DC The AC output terminals are the point on the AC bus bars at which the external AC connections to the Megapack are terminated (Power and Energy on page 13). Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 5 MEGAPACK SYSTEM COMPONENTS 2.1.1 Product Configurations A Megapack unit is configurable and may vary based on product options or product variants. The product (Megapack unit) as built or later reconfigured, complete with its customizations including variants and options, is known as a configuration. 2.1.1.1 Product Options An option is a product difference that is optionally configured to meet project requirements, such as number of battery modules or cell type (Battery Modules on page 8). Product options are defined using option codes. Not all combinations of option codes are possible, as some option codes are pre-defined by other option codes. Option codes are described at a high level below. Refer to the Megapack 2 XL Option Codes Quick Reference Guide on the Tesla Partner Portal for detailed calculation and ratings information. Table 1. Product Options Option Option Description Code Cell C### Cell options can denote different cell characteristics such as specifications or manufacturing location. The following cell options are available: Option Manufacturing Location C010 China C011 United States C012 China Fan Type FN## Fan type options affect the maximum audible noise specification (Noise Specification and Guidance on page 29). The following fan type options are available: • FN01 • FN02 • FN03 Number of Battery EC## Where ## is a number between 08 and 24, which indicates the number of battery Modules modules. Combine with GT##to derive the Megapack unit's energy capacity (kWh). Combine with GT## and P###to derive the Megapack unit's real power capability (kW). Inverter Module GT## GT01: 4-Hour inverter module configuration Configuration GT02: 2-Hour inverter module configuration Combine with EC##to derive the Megapack unit's energy capacity (kWh). Apparent Power P### Where ### is a number between 040 - 240, which indicates the Megapack unit's Configuration apparent power capability. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 6 MEGAPACK SYSTEM COMPONENTS Option Option Description Code Additionally allows for calculation of maximum continuous charge/discharge current (A). Low-Voltage CMA# CMAO: The hardware configuration does not support future low-voltage battery Augmentation augmentation Configuration CMA1: The hardware configuration supports future low-voltage battery augmentation Grid-Forming VF## VF00: The configuration does not support grid-forming Firmware Configuration VF01: The configuration supports grid-forming Tesla may also configure options (manufacturing options) that become part of the product's option codes, such as circuit breaker manufacturing options. Manufacturing options are not customer-configurable. Table 2. Manufacturing Options Option Option Description Code Thermal TC## Preconfigured based on heat rejection requirements of the power electronics Configuration and battery module count. Option Refrigerant TC2P R-1234yf TC4P R-1234yf TC2H R-134a TC4H R-134a Internal Bussing QB## Preconfigured based on the inverter module and apparent power Configuration configurations. OB01: 1600 A OB02: 3000 A Megapack AC Circuit BB## Preconfigured based on the inverter module and apparent power configuration. Breaker BB01: 1600 A BB02: 3000 A Shipping Firmware SE## Preconfigured based on delivery location of the Megapack. Configuration SE00: Configuration supports transportation over water SE01: Configuration supports transportation over land only Cellular Configuration CR## Preconfigured based on delivery location of the Megapack. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 7 MEGAPACK SYSTEM COMPONENTS Option Option Description Code CRNA: North America CRCN: China CRRW: Rest of world 2.1.1.2 Product Variants A variant is a part or product difference that is not optionally configured but is,for example, an incremental product improvement, such as an enclosure variant (Enclosure on page 10). 2.1.2 Battery Modules Battery modules are factory-installed into Megapack battery module bays and contain prismatic lithium-ion battery cells, the smallest non-divisible energy storage components of the Megapack. A battery module in turn is the smallest field-replaceable battery unit. Each Megapack contains up to 24 battery modules. Battery modules may consist of C010, C011, or C012 cell options. Figure 4. Battery Module - C010 or C011 Cell Option i Figure 5. Battery Module - C012 Cell Option Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 8 MEGAPACK SYSTEM COMPONENTS Each battery module includes an integrated inverter module for power conversion. Battery modules are connected in parallel to Megapack's internal AC bus, each with an AC power and communications output connection. The modules do not require any field assembly or adjustments and may only be replaced by Service Providers. 2.1.3 Thermal System The thermal system provides active cooling and heating to the internal Megapack components. An external HVAC or thermal system is therefore not required for Megapack to operate. The thermal system is comprised of the thermal cabinet and the thermal roof. Figure 6. Thermal System � O. 1. Thermal cabinet 2. Thermal roof See Thermal Specifications on page 27 for more information. 2.1.4 Customer Interface Bay The Customer Interface Bay is a single bay that includes all the external connections needed for initial installation (the customer 1/0 area and the AC bus bar area) and the Megapack AC circuit breaker. Figure 7. Customer Interface Bay Y pop Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 9 MEGAPACK SYSTEM COMPONENTS Figure 8. Customer Interface Bay Details O 8 8 � O j �s 1. Megapack AC circuit breaker - provides distribution system protection 2. Customer 1/0 area - where all terminations aside from AC bus bars are made 3. AC bus bar area - where terminations to the site distribution transformer or AC distribution panel are made 4. Wireway openings 2.1.5 Enclosure Megapack's enclosure is rated according to IP (ingress protection) code IP66. This means it provides a high level of protection against particle and water ingress for components internal to the enclosure. This high protection rating must be maintained at all times.In particular,special precautions must be observed while installing or servicing Megapack to prevent particles,water,or debris from entering the enclosure. There are two enclosure variants: Table 3. Megapack Enclosure Variants Variant Number of Anchor Brackets Wireway Configuration -C enclosure 12 Two single-channel trays -D enclosure 10 Two four-channel trays Graphics in this publication reflect the -C enclosure variant unless otherwise specified. Refer to the Megapack 2 XL Layout drawings in the Megapack 2 XL Drawings package on the Tesla Partner Portal for detailed information. 2.2 Tesla System Controller The Tesla System Controller is the single point of interface with which to monitor and control the entire Tesla System and approved third-party generation sources as specified in the Tesla Industrial Energy Approved Vendor List on the Tesla Partner Portal. It manages control functions of the Tesla System and approved third-party generation sources, aggregating real-time information and using it to optimize commands. The Tesla System Controller communicates over a private TCP network. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 10 MEGAPACK SYSTEM COMPONENTS By default, Tesla provides two Tesla System Controllers (with the same part number). Refer to the SCADA Design Manual on the Tesla Partner Portal for additional details on alternative configurations. Tesla does not include additional networking equipment that may be required for the system to operate. The Tesla System Controller has three network interfaces: • LAN 1 RJ45/Ethernet port, which connects to the Customer Network and can be configured for WAN access • LAN 2 RJ45/Ethernet port, which connects to the Tesla Network • Integrated cellular modem, which by default provides cellular access for Tesla's remote connection (part numbers 1471208 and 1700130) Tesla requires network separation between the Tesla Network and the Customer Network. The Tesla Network shall only contain devices that are critical for Tesla System operation. System operators can interface with the Tesla System Controller over the Customer Network. There are two physical variations of the Tesla System Controller: • Standard Tesla System Controller: Used in Tesla Systems with up to 16 battery units (not including augmentation units). Delivered in the Standard Tesla System Controller Enclosure, which includes two Standard Tesla System Controllers. Refer to the Standard Tesla System Controller Enclosure Installation Manual on the Tesla Partner Portal for installation details. • Large Tesla System Controller: Used in Tesla Systems with greater than 16 and up to 1,000 battery units (not including augmentation units). A single Large Tesla System Controller (or pair of controllers acting in automatic failover) supports up to 1,000 battery units. For projects with more than 1,000 battery units, additional Large Tesla System Controller(s) may be required. Contact your Tesla representative for more information on controller architectures for larger system sizes. .le NOTE:If you have contracted a Certified Service Provider to operate and maintain your Tesla System, contact your Tesla representative for requirements. 2.3 Hazard Mitigation Features There are hazards inherent in any energy system. In battery energy storage systems, chemical energy in the battery cells can be transmitted as electricity or heat and gases which, when unmitigated, may result in fire. Hazards are mitigated in multiple ways by the Tesla System, as described in this section. 2.3.1 Electrical Hazard Mitigation Electrical hazards can include shock from unexpected voltage, heat from unanticipated escape of stored energy, and environmental hazards such as electrical storms. Megapack's electrical hazard mitigation includes: • Battery module overcurrent protection:The battery modules contain DC single-use fusible links. • Inverter DC protection: Each inverter module is equipped with its own high-speed DC disconnect. • Inverter AC protection: Each inverter module is equipped with its own AC contactor and AC fuses. • Ground fault protection: Megapack is provided with a DC ground fault detection system. Megapack measures insulation resistance prior to operation and looks for ground fault during operation. Megapack also contains an AC circuit breaker with ground-fault trip settings. • Protective internal frame: The enclosure's internal frame can act like a Faraday cage, diverting currents from electrical storms to flow around the internal components but not through them to ground. • Power electronics sizing: The power electronics of the unit provides component sizing and creepage clearance in addition to monitored surge protection on the load side of the Megapack breaker. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 11 MEGAPACK SYSTEM COMPONENTS 2.3.2 Explosion Hazard Mitigation The Megapack battery enclosure has an explosion control system that mitigates the potential of the enclosure to fail in the event of a deflagration. This system includes: • Sparker System: A protective feature that uses spark plugs ("Sparkers") to proactively ignite flammable discharge gases from compromised battery cells before the gases accumulate within the enclosure and could lead to an explosion hazard. • Overpressure vents: Vents installed in the ceiling of the battery bay's IP66 enclosure that are designed to open during an overpressure event, such as the rapid ignition of flammable gases by a Sparker. Once opened, the overpressure vents permit gases, products of combustion, and flames to exhaust in a controlled path from the battery bay into the thermal roof. From the thermal roof, this exhaust releases out of the roof vents. 2.3.3 Fire Hazard Mitigation If fire occurs as a result of these hazards, the battery enclosure is designed to prevent it from propagating to nearby enclosures or exposures. 2.3.4 Other Safety Features In addition to features provided to mitigate hazards, the Tesla System provides additional features that you can use to enhance safety, including: • Megapack AC circuit breaker:The Customer Interface Bay contains an AC circuit breaker that can be locked in the open position. • Enable circuit: Megapack includes an enable circuit that shuts down all major power components whenever the circuit is opened. Certain factors trigger opening this circuit, including opening bay doors or turning the enable switch off. The Customer Interface Bay door is not part of the enable circuit. The enable circuit does not trip the Megapack AC circuit breaker. • Enable switch:The customer 1/0 area in the Customer Interface Bay includes an enable switch that can interrupt the enable circuit and prevent the Megapack from energizing. • Remote shutdown terminals:The customer 1/0 area in the Customer Interface Bay contains a pair of terminals used to perform a remote shutdown, which commands the inverter to cease operation and opens the Megapack AC circuit breaker. • Battery management system: Megapack provides firmware and software that can be used to monitor the system including battery cell temperature and fault tolerance. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 12 MEGAPACK SPECIFICATIONS 3 Megapack Specifications 3.1 Power and Energy A Megapack unit's apparent power capability (kVA), real power capability (kW), and energy capacity (kWh) are specified at its AC output terminals (as described in Megapack Internal Architecture on page 5) and include Megapack auxiliary power as well as battery inverter losses (Appendix A: Glossary on page 75). Losses between the AC output terminals and the point of interconnection with the customer or utility are site-dependent and excluded from the Megapack unit ratings. At beginning of life, Megapack can provide energy capacity at real power capability when discharged from 100% SOE at STC. Megapack is also capable of storing energy capacity at real power capability when charged from 0% SOE at STC. Megapack is capable of charging or discharging at real power capability for the life of the Megapack. The amount of energy Megapack can store will decrease over time. NOTE:The Megapack System can be augmented to maintain power and energy capacity over the life of the product if arranged for at the time of contracting. Contact Tesla for more information. Megapack standard configurations have the following ratings at 480 V AC: Table 4. Megapack Standard Configuration Ratings Configuration Apparent Power Real Power Energy Associated Option Codes Capability(kVA) Capability (kW) Capacity(kWh) 2-Hour C010/C011 2400.0 1927.2 3854.4 C010 or C011, EC24, GT02, P240 4-Hour C010/C011 1320.0 979.2 3916.8 C010 or C011, EC24, GT01, P132 4-Hour C012 1320.0 1075.0 4300.0 C012, EC24, GT01, P132 Megapack can be requested to be factory-configured with lower apparent power capability to meet specific project needs within the following ranges, in 50 kVA scaling increments from the minimum: Table 5. Apparent Power Capability Configuration Configuration Minimum Apparent Power Capability(kVA) Maximum Apparent Power Capability(kVA) 2-Hour C010/C011 400 2400 4-Hour C010/C011 400 1320 4-Hour C012 400 1320 Ll ., NOTE: Megapack should be configured with a kVA rating that considers and includes the Megapack auxiliary power (Megapack Maximum Auxiliary Power on page 16). Megapack can be requested with fewer battery modules to meet specific project needs within the following ranges and scaling increments: Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 13 MEGAPACK SPECIFICATIONS Table 6. Real Power Capability and Energy Capacity Configuration Configuration Minimum Real Power Maximum Real Power Real Power Scaling Increment Capability(kW)/Minimum Capability(kW)/Maximum (kW) Energy Capacity Scaling Energy Capacity(kWh) Energy Capacity (kWh) Increment (kWh) 2-Hour C010/C011 642.4/1284.8 1927.2/3854.4 80.3/160.6 4-Hour C010/C011 326.4/1305.6 979.2/3916.8 40.8/163.2 4-Hour C012 358.3/1433.3 1075.0/4300.0 44.8/179.1 i NOTE:If the configured Apparent Power Capability is less than the Real Power Capability, then the Real Power Capability of Megapack shall be equal to the configured Apparent Power Capability. A Megapack unit is capable of configurations other than standard 2-Hour and 4-Hour configurations. To enable longer configurations, the P###option code is configured such that the power configuration is lower than the available real power from the batteries. For example, an 8-Hour non-standard configuration would reduce the P### option code of a standard 4-Hour configuration. 3.2 Round-Trip Efficiency The round-trip efficiency (RTE), which includes Megapack energy consumption during the cycle (Appendix A: Glossary on page 75), is specified in the table below: Table 7. Round-Trip Efficiency Round-Trip Efficiency Configuration Ambient Conditions At Beginning of Life* At Year 15** 2-Hour C010/C011 -TC2H STC 91.7% 89.5% TAMBCOLD 91.6% 89.4% TAMBHOT 88.9% 86.8% 4-Hour C010/C011 -TC4H STC 93.7% 92.0% TAMBCOLD 93.2% 91.5% TAMBHOT 90.8% 89.2% 4-Hour C012-TC2H STC 91.8% 89.4% TAMBCOLD 91.7% 89.3% TAMBHOT 89.0% 86.7% 2-Hour C010/C011 -TC2P STC 91.9% 90.7% TAMBCOLD 90.2% 89.0% TAMBHOT 90.3% 89.1% 4-Hour C010/C011 -TC4P STC 93.5% 92.4% TAMBCOLD 92.9% 91.8% TAMBHOT 93.2% 92.1% 4-Hour C012-TC2P STC 91.9% 89.8% TAMBCOLD 91.0% 88.9% TAMBHOT 91.6% 89.5% Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 14 MEGAPACK SPECIFICATIONS *Indicative figures. **Indicative figures. Exact value will depend on battery utilization and climate over the 15 years. Indicative round-trip efficiency (beginning of life and year 15) under STC for a single Megapack at different power levels is shown in the graphs below. Figure 9. Round-Trip Efficiency: 2-Hour C010/C011 —TC2H 94.0% 93.5% 93.0% 92.5% T c 92.0% a .V W 91.5% a 91.0% c 0 0 90.5% 90.0% - 89.5% 89.0% 0 200 400 600 800 1000 1200 1400 1600 1800 2000 Power(kW) Beginning of life Year 15 Figure 10. Round-Trip Efficiency: 4-Hour C010/C011 —TC4H 945% 94.0% 93.5% u C 4J w 93.0% a v c 0 92.5% z 92.0% 91.5% 0 100 200 300 400 500 600 700 900 1000 Power(kW) Beginning of life Year 15 Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 15 MEGAPACK SPECIFICATIONS 3.3 Megapack Maximum Auxiliary Power, Auxiliary Energy, and Battery Inverter Losses In addition to power used to charge and discharge the battery modules, Megapack draws some amount of auxiliary power to support its internal controls and thermal management system. Megapack's battery inverter losses also consume some power, which is additional to the Megapack auxiliary power. Since Megapack's auxiliary power is supplied by its AC output terminals or by the battery modules, it is not possible to measure the auxiliary power separately from the battery inverter losses or any charge/discharge power consumed by the battery modules. Tesla provides a telemetry signal sharing the auxiliary power internally drawn from Megapack on the customer interfaces. Megapack auxiliary power and battery inverter losses may be drawn from the grid and/or the battery cells depending on the power command and operating state. Table 8. Source of Auxiliary Power and Battery Inverter Losses State Request=OFF State Request=ON Control Not applicable Maintain Energy Closed-Loop Control enabled Element enabled* Maintain Energy disabled State of Energy N/A N/A 0% >0% Megapack Grid Grid. In addition to auxiliary power and Customer power command is Auxiliary battery inverter losses, a small amount of enforced by Closed-Loop Power and power will be used to charge Megapacks Control at the meter. Auxiliary Battery Inverter to maintain its state of energy. power and battery inverter losses Losses Source may be fed by the Megapacks (discharging) or the grid (charge greater than auxiliary power and battery inverter losses) depending on the power command. *Using a Maintain Energy Target equal to the current Remaining Battery Energy. For additional details on auxiliary load accounting, refer to Auxiliary Power in the Controls and Communications Manual on the Tesla Partner Portal. 3.3.1 Megapack Maximum Auxiliary Power Megapack may draw auxiliary power up to the values indicated in the table below. Each Megapack should be configured with a kVA rating that considers and includes this additional value to ensure that Megapack can supply enough AC current to simultaneously run the thermal system and charge/discharge in accordance with commands. Table 9. Maximum Auxiliary Power Configuration Auxiliary Power(kVA) 2-Hour C010/C011 —TC2H 40 4-Hour C010/C011 —TC4H 35 4-Hour C012—TC2H 40 2-Hour C010/C011 —TC2P 60 4-Hour C010/C011 —TC4P 35 Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 16 MEGAPACK SPECIFICATIONS Configuration Auxiliary Power(kVA) 4-Hour C012—TC2P 60 3.3.2 Megapack Auxiliary Energy over 24 Hours L_i NOTE:All specifications below assume Heat Mode (Appendix A: Glossary on page 75) is not enabled by the user. Megapack auxiliary power varies over time and is not proportional to the requested charge or discharge power. Auxiliary peak average power is the highest average of the measured power for the specified interval (5-minute or 15- minute) over a standard 24-hour period. The auxiliary energy is shared in kWh over a 24-hour period for example operational scenarios, when Megapack is not actively charging or discharging. Megapack auxiliary energy was evaluated for the following two states: • On: Commands Megapack to go active and enables operation. Megapack will consume additional energy to remain active. • Off: Megapack will not be allowed to operate. In this state, contactors may still close and Megapack may consume a small amount of energy to support vital functionality, but they will not respond to Control Elements. The following cycles are defined as how Megapack was operated immediately before the 24-hour period during which Megapack auxiliary energy is calculated: • No cycle: Megapack was not charging or discharging power. • Post-cycle: Megapack was charged from 0% SOE to 100% SOE at real power capability (kW) and was immediately discharged from 100% SOE to 0% at real power capability (kW), followed by a charge to 10% SOE to ensure the system is not left at 0% at end of discharge. .�` NOTE:At 0% SOE, Megapack will draw a small amount of additional power from the grid to prevent hardware damage to its cells. Auxiliary energy per Megapack over a 24-hour period at the beginning of the battery unit's life is detailed for various scenarios in the tables below. The values provided are exclusive of battery inverter losses, documented in Battery Inverter Losses on page 21. Table 10. Megapack Auxiliary Energy, Off, No Cycle Configuration Ambient Conditions Auxiliary Energy 5-Minute Peak 15-Minute Peak (kWh/24 Hours) Average (kW) Average (kW) 2-Hour C010/C011 —TC2H STC 10 1.6 0.8 TAMBCOLD 10 1.5 0.8 TAMBHOT 35 14.4 13.6 4-Hour C010/C011 —TC4H STC 20 5.3 0.7 TAMBCOLD 5 4.3 0.7 TAMBHOT 25 11.8 0.3 4-Hour C012-TC2H STC 25 1.3 0.8 TAMBCOLD 10 1.1 0.7 TAMBHOT 35 0.8 0.2 2-Hour C010/C011 -TC2P* STC 5 1.1 0.2 Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 17 MEGAPACK SPECIFICATIONS Configuration Ambient Conditions Auxiliary Energy 5-Minute Peak 15-Minute Peak (kWh/24 Hours) Average(kW) Average (kW) TAMBCOLD 5 1.2 0.7 TAMBHOT 5 1.1 0.2 4-Hour C010/C011 -TC4P* STC 5 0.6 0.2 TAMBCOLD 5 0.9 0.8 TAMBHOT 5 0.6 0.2 4-Hour C012-TC2P* STC 5 0.8 0.2 TAMBCOLD 5 0.8 0.2 TAMBHOT 5 0.8 0.2 *Applicable to Grid-Following mode only. For Grid-Forming mode, contact your Tesla representative. Table 11. Megapack Auxiliary Energy, Off, Post-Cycle Configuration Ambient Conditions Auxiliary Energy 5-Minute Peak 15-Minute Peak (kWh/24 Hours) Average(kW) Average (kW) 2-Hour C010/C011 -TC2H STC 65 8.9 8.1 TAMBCOLD 15 3.3 2.5 TAMBHOT 155 32.5 39.1 4-Hour C010/C011 -TC4H STC 50 9.2 4.6 TAMBCOLD 10 6.1 1.5 TAMBHOT 95 19.1 18.2 4-Hour C012-TC2H STC 70 10.7 10.3 TAMBCOLD 15 7.1 2.9 TAMBHOT 145 18.5 14.5 2-Hour C010/C011 -TC2P* STC 40 8.9 8.2 TAMBCOLD 17 3.9 3.1 TAMBHOT 119 29.8 29.5 4-Hour C010/C011 -TC4P* STC 36 5.2 4.8 TAMBCOLD 14 3.6 2.7 TAMBHOT 98 15.1 14.9 4-Hour C012-TC2P* STC 33 10.3 7.9 TAMBCOLD 12 7.9 3.5 TAMBHOT 125 30 28.5 *Applicable to Grid-Following mode only. For Grid-Forming mode, contact your Tesla representative. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 18 MEGAPACK SPECIFICATIONS wr Table 12. Megapack Auxiliary Energy, On, No Cycle Configuration Ambient Conditions Auxiliary Energy 5-Minute Peak 15-Minute Peak (kWh/24 Hours) Average (kW) Average (kW) 2-Hour C010/C011 -TC2H STC 30 9.6 1.2 TAMBCOLD 30 10 1.9 TAMBHOT 60 22.3 14.0 4-Hour C010/C011 -TC4H STC 30 2.3 1.1 TAMBCOLD 15 2.3 1.3 TAMBHOT 40 8.7 7.6 4-Hour C012-TC2H STC 45 5.4 1.2 TAMBCOLD 30 5.3 1.4 TAMBHOT 55 18.1 14.0 2-Hour C010/C011 -TC2P* STC 31 10.9 8.7 TAMBCOLD 26 3.4 1.1 TAMBHOT 88 32.0 30.3 4-Hour C010/C011 -TC4P* STC 25 2.3 1.1 TAMBCOLD 25 2.3 1.1 TAMBHOT 64 16.4 15.3 4-Hour C012-TC2P* STC 26 2.3 1.1 TAMBCOLD 26 2.3 1.1 TAMBHOT 73 29.2 28.6 *Applicable to Grid-Following mode only. For Grid-Forming mode, contact your Tesla representative. Table 13. Megapack Auxiliary Energy, On, Post-Cycle Configuration Ambient Conditions Auxiliary Energy 5-Minute Peak 15-Minute Peak (kWh/24 Hours) Average (kW) Average (kW) 2-Hour C010/C011 -TC2H STC 95 16.9 8.5 TAMBCOLD 30 11.2 2.9 TAMBHOT 165 39.7 39.3 4-Hour C010/C011 -TC4H STC 55 6.2 5.2 TAMBCOLD 25 3.2 2.0 TAMBHOT 100 16.0 18.7 4-Hour C012-TC2H STC 90 14.8 10.7 TAMBCOLD 40 7.1 2.9 TAMBHOT 155 18.5 14.5 2-Hour C010/C011 -TC2P* STC 64 10.9 8.7 Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 19 MEGAPACK SPECIFICATIONS Configuration Ambient Conditions Auxiliary Energy 5-Minute Peak 15-Minute Peak (kWh/24 Hours) Average(kW) Average (kW) TAMBCOLD 35 5.8 3.5 TAMBHOT 188 32.1 30.4 4-Hour C010/C011 —TC4P* STC 58 6.4 5.3 TAMBCOLD 32 4.3 3.1 TAMBHOT 142 16.4 15.3 4-Hour C012—TC2P* STC 56 9.6 8.5 TAMBCOLD 32 4.7 3.5 TAMBHOT 170 29.2 28.6 *Applicable to Grid-Following mode only. For Grid-Forming mode, contact your Tesla representative. 3.3.3 Auxiliary Energy during Heat Mode Megapack's thermal system may be used to maintain its real power capability and maximize Remaining Battery Energy (Telemetry on page 46) across its ambient temperature range. By raising the temperature of the battery modules using Megapack's thermal system, Megapack can be preconditioned from the starting temperatures indicated below to allow charge at real power capability. The preconditioning duration and energy below are dependent on temperature, product configuration, command, and state of energy and exclude battery inverter losses. Table 14. Enabling Heat Mode to Charge at Real Power Capability Configuration Starting Temperature Preconditioning Duration (Hours) Preconditioning Auxiliary Energy (kWh) TC2H/TC4H -300C 18 540 -200C 15 445 -100C 11.5 350 0°C 8.5 260 10°C 6 175 200C 3 90 TC2P/TC4P -300C 17 500 -200C 14 410 -100C 14.5 145 0°C 8.5 95 10°C 5.5 50 200C 3 25 Similarly, Megapack can be preconditioned to allow discharge at real power capability: Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 20 MEGAPACK SPECIFICATIONS wr Table 15. Enabling Heat Mode to Discharge at Real Power Capability Configuration Starting Temperature Preconditioning Duration (Hours) Preconditioning Auxiliary Energy (kWh) TC2H/TC4H -300C 3.5 105 -200C 0 0 TC2P/TC4P -300C 4 100 -200C 0 0 Finally, Megapack can be preconditioned from the following starting temperatures to maximize Remaining Battery Energy (Telemetry on page 46): Table 16. Enabling Heat Mode to Maximize Remaining Battery Energy Configuration Starting Temperature Preconditioning Duration (Hours) Preconditioning Auxiliary Energy (kWh) TC2H/TC4H -300C 18 535 -200C 14.5 440 -100C 11.5 345 0°C 8.5 250 10°C 5.5 160 200C 2.5 65 TC2P/TC4P -300C 17 500 -200C 14 410 -100C 14.5 145 0°C 8.5 95 10°C 5.5 50 200C 2.5 20 3.3.4 Battery Inverter Losses Battery inverter losses increase with the operating power of the inverter and are accounted for as part of the efficiency. While losses generally decrease with a lower power value, the losses are not equal to zero when the commanded real power is zero. Battery inverter losses at zero real power include switching losses and quiescent draw from the inverter. Switching losses are present when Megapack is in ON state, even when Megapack is not actively charging or discharging. Quiescent draws are present in both ON and OFF state. Inverter losses do not depend on the ambient temperature. Table 17. Inverter Losses per Megapack at Zero Power in ON and OFF States Configuration Megapack ON (kW)* Megapack OFF (kW)* 2-Hour** 3.3 1.0 4-Hour** 1.7 0.5 *Indicative figures "Applicable to Grid-Following mode only. For Grid-Forming mode, contact your Tesla representative. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 21 MEGAPACK SPECIFICATIONS Inverter losses are not measured directly inside of the Megapack and are inherent to the Megapack inverter operation. The values in Inverter Losses per Megapack at Zero Power in ON and OFF States on page 21 are indicative and provided based on measurements performed on test systems. 3.4 Interconnection Data Table 18. Interconnection Data Specification Value Max Continuous Output Current Factory-configurable (See Power and Energy on page 13) Overload Capability 120% of rated current (10 s max) Nominal Voltage 480 V AC (configurable) Output Voltage Range 422-552 V AC Nominal Frequency 50 or 60 Hz (configurable) Frequency Range 45-66 Hz Phases 3 Configuration 3-wire, Wye Note: Grounded Wye required at transformer secondary Power Factor Range -1 to +1 Total Current Harmonic Distortion (THD) < 5% (at real power capability) Power Regulation Accuracy < 2% (See Response Time on page 50) Overvoltage Category Category III up to 3000 m Maximum Supply Fault Current 85 kArms 3.5 Ride-Through and Anti-Islanding Features 3.5.1 Voltage Ride-Through Megapack voltage ride-through (VRT) settings— high-voltage ride-through (HVRT) and low-voltage ride-through (LVRT) —are adjustable and programmed during the commissioning process to meet IEEE 1547-2018 or IEEE 2800-2022 requirements, and/or to comply with applicable grid code. The curve in Megapack Non-Cumulative and RMS-Based HVRT and LVRT Capabilities on page 23 specifies the per-unit HVRT and LVRT non-cumulative capability of Megapack. All per-unit (pu) voltages are defined with respect to 480 V AC L-L.* Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 22 MEGAPACK SPECIFICATIONS Figure 11. Megapack Non-Cumulative and RMS-Based HVRT and LVRT Capabilities ... 0.2,1.3 90,1.25 1.) 0.2 L2 90,1.15 25.6.85] -0.8 a 0.6 5.0.5 1.5,OA 0.4 5.0.4] 0.2 1.5.0 0 0 1 10 100 x t(s) HVRT LV RT Table 19. Ride-Through Setting Ranges Parameter Setting Range Resolution Voltage 0.00— maximum HVRT capability 0.01 pu Time 0.001 —60000 s* 0.001 s * Time allowed at a specific per-unit voltage depends on the nominal voltage rating. Typically, default settings and acceptable ranges are tested as part of a specific certification. For deviations from certified settings in a region, contact your Tesla representative for more information. The table below specifies the maximum per-unit overvoltage (OV) withstand non-cumulative capability of Megapack: Table 20. Maximum Overvoltage Withstand Parameter Per-Unit Maximum Value, Nominal Voltage of 480 V AC, Non-Cumulative and RMS- Based Maximum OV withstand 130% @ 0.2 s Megapack has adjustable abnormal voltage settings parameters. For details on configuring Megapack to comply with IEEE 1547, refer to the Design and Installation Manual on the Tesla Partner Portal. In addition to ride-through capability, Megapack is capable of adding or removing VARs during VRT events to help support voltage regulation during a fault event. K-factor (reactive current support coefficient) adjusts the amount of reactive current supplied to support grid voltage during a fault. This coefficient is multiplied by the per-unit voltage sag/swell to determine the amount of reactive current (up to rated current) supplied to support the voltage. There are separate coefficients for sag and swell. Setting a K-factor to 0 disables reactive current support. As part of the commissioning process, Megapack can be configured to prioritize real or reactive current during VRT (grid fault) events. Megapack can supply negative sequence reactive current (up to rated current per phase) to support voltage imbalance due to grid faults. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 23 MEGAPACK SPECIFICATIONS 3.5.2 Frequency Ride-Through Megapack frequency ride-through (FRT) settings are adjustable and programmed during the commissioning process to comply with IEEE 1547-2018 or IEEE 2800-2022 Table 15 requirements, and/or to comply with applicable grid code. High-frequency ride-through (HFRT) and low-frequency ride-through (LFRT) parameters are configurable to the limits of the capability curves shown in Megapack HFRT and LFRT Capabilities (50 Hz) on page 24 and Megapack HFRT and LFRT Capabilities (60 Hz) on page 25 below. Figure 12. Megapack HFRT and LFRT Capabilities (50 Hz) 6 120,55 54 0.2,55 1000,52.5 52 "12052.5 50 1000.51.5 10W.47.5 48 M.47 46 0.5,45 F100Q 47 130� 44 0.5,44 4' 40 - 0 0.6 G 60 600 00 t�s) HFRT LFRT Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 24 MEGAPACK SPECIFICATIONS Figure 13. Megapack HFRT and LFRT Capabilities (60 Hz) 68 66 sa 30,65 64 1.65 180,63.5 62 i 30.63.5 60 1 180,621 L 120,56.9 58 r 1.55 56 120,66.5 54 1,sd 52 50 0 0.6 6 60 x t(s) HFRT LFRT Megapack has three underfrequency (UF) and three overfrequency (OF) trip points and times. These are configured during commissioning to comply with the relevant grid code. The limits and resolution of frequency setpoints are enumerated in Frequency Trip Point Settings on page 25 below. Table 21. Frequency Trip Point Settings Trip Point Frequency Range Time (s) Resolution UF Trip Time 1 - 3 44—66 Hz 0.001-60000 0.01 Hz/0.001 s OF Trip Time 1 - 3 3.5.3 Ride-Through Operation Alerts Megapack exposes four ride-through alerts to the customer interface. A Megapack unit will assert an alert that it has entered VRT or FRT mode when any threshold has been crossed that would, if sustained, result in a Megapack trip. For example, if the HVRT settings were set according to the capability curve in Megapack Non-Cumulative and RMS- Based HVRT and LVRT Capabilities on page 23, a HVRT alert would be asserted without delay when voltage exceeds 1.15 per-unit. Underfrequency, overfrequency, and undervoltage alerts will be issued when their respective most- stringent thresholds are exceeded. To reduce the risk of nuisance alerting, the Megapack unit ride-through alert is asserted when at least 50% of its inverters report that they have entered ride-through. The alert will remain asserted until less than 50% of the inverters are in ride-through. Refer to the Controls and Communications Manual on the Tesla Partner Portal for point indices for the ride-through points listed in System-Level Telemetry and Alerts on page 46. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 25 MEGAPACK SPECIFICATIONS 3.5.4 Trip Accuracy Table 22. Trip Accuracy Trip Setting Accuracy Voltage +/- 1% of nominal voltage Frequency +/- 0.01 Hz Reconnection time 1% of setpoint Trip time .16 s for< 5 s 1% of setpoint for> 5 s Active power +/- 5% of apparent power capability Reactive power +/- 5% of apparent power capability 3.5.5 Anti-Islanding Features The Megapack inverter includes these anti-islanding features: • Reconnection delay timer • Active anti-islanding: Sandia Frequency Shift implemented on all systems • Passive anti-islanding: Configurable rate of change of frequency (ROCOF) preferences The reconnection delay timer is configurable with the following settings: Table 23. Reconnection Delay Timer Default Settings Feature Name Effect Setting Range Default Reconnect Time The amount of time Megapack waits before reconnection, after 0-600 s 300 s Delay the grid returns within the frequency and voltage ride-through windows defined above. Reconnect Min. The minimum voltage at which Megapack interprets the grid is 0-150% 88.33% Voltage within tolerable conditions. Reconnect Max. The maximum voltage at which Megapack interprets the grid is 0-150% 105.83% Voltage within tolerable conditions. Reconnect Min. The minimum frequency at which Megapack interprets the grid is 44- 66 Hz 59.3 Hz Frequency within tolerable conditions. Reconnect Max. The maximum frequency at which Megapack interprets the grid is 44- 66 Hz 60.5 Hz Frequency within tolerable conditions. Sandia Frequency Shift is enabled by default, but can be disabled if required for the application. ROCOF is configurable with the following settings: Table 24. ROCOF Settings Feature Name Effect Setting Range Default ROCOF Enable Turns ROCOF on or off n/a Off ROCOF Fault Limit Sets the rate of change required for a trip 0.1-100.0 Hz/s 1 Hz/s ROCOF Time Delay Setts how long the rate of change has to be present for the inverter to 0-1 s 1 s trip Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 26 MEGAPACK SPECIFICATIONS wr 3.6 Dimensions and Mass .i NOTE: Mass as listed is maximum mass. Megapack can be configured for lighter shipping mass based on project-specific requirements. ,✓ NOTE: Enclosure dimensions are provided for nominal design guidance only. For precise dimensions, refer to Megapack 2 XL Drawings. Table 25. Megapack Dimensions and Mass (Weight) Width Depth Height Max. Shipping Mass 8800 mm 1650 mm 2785 mm 38,100 kg (3461/2 in) (65 in) (110 in) (84,000 lb) 3.7 Ambient Temperature and Elevation Megapack is capable of meeting apparent power capability and real power capability in ambient temperatures between -30°C and 50°C, and in relative humidity of up to 100% condensing. In high elevation, at low air pressure, the cooling capability of Megapack may be reduced as specified by standard atmosphere conditions as indicated below: Table 26. Ambient Temperature Elevation Above Sea Level (M) Maximum Ambient Temperature During Operation (°C) 0-999 50.0 1000-1999 48.5 2000-2999 42.0 3000 35.5 3.8 Thermal Specifications The thermal system includes coolant and refrigerant in a sealed system. Megapack ships with the necessary coolant and refrigerant included as specified below. Table 27. Thermal Capacities Composition Max Quantity (Approx) Coolant 50-50 ethylene glycol-water 380 L/100 gal Refrigerant R-1234yf (2,3,3,3- 4-Hour thermal configuration (TC4P option Up to 2.6 kg/5.7 lb Tetrafluoroethane) code) 2-Hour thermal configuration (TC2P option Up to 5.2 kg/11.5 lb code) 4-Hour thermal configuration (TC4H option Up to 1.5 kg/3.3 lb code) R-134a (1,1,1,2-Tetrafluoroethane) 2-Hour thermal configuration (TC2H option Up to 3 kg/6.6 lb code) Air flows through the enclosure as shown below: Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 27 MEGAPACK SPECIFICATIONS Figure 14. Megapack Airflow I� The thermal cabinet includes pumps that circulate coolant through the Megapack and a compressor that maintains thermal control, in addition to an in-line heater that can warm the coolant. The thermal cabinet also contains a power conversion system for drawing power from Megapack's internal AC bus. The thermal cabinet is accessible for servicing from ground level. The thermal roof, or top cabinet of the enclosure, provides ventilation airspace and contains fans and radiators that cool the ethylene glycol-water coolant solution. The thermal roof is accessible for servicing with the help of a ladder or mechanical lift. Since the thermal subsystem is a fully closed-loop system with a compressor,the refrigerant line includes a pressure relief valve that can activate if incorrect maintenance or operation creates excessive pressure. The system operates autonomously and does not require user feedback. Megapack is designed to be installed outdoors within the rated operating temperature specifications. Indoor installations are not allowed without consulting Tesla. CAUTION: Do not install batteries in areas where temperatures routinely approach or exceed 50°C (122°F). 3.9 Enclosure Specifications and Ratings Table 28. Enclosure Specifications or Capabilities Corrosion Resistance Compliant with ISO 12944: C51 (industrial) and C5M (coastal) standards Impact Rating IK09 Ingress Rating IP66/NEMA 3R (Megapack enclosure - including rain and sprinkler test immunity) IP20 (Thermal system) Roof Live Load Can support a person of up to 300 lb (136 kg) gross weight in clearly designated areas Roof Snow Load 732.3 kg/m2 (150 psf, or 7.18 kNEarth/m2) Salt Fog Rating Able to withstand over 1,000 hours of salt fog application per a C5M system Seismic,Shock,and Qualification Level - IEEE 693-2018 High PL:ZPA=1.0 g 5% damping Vibration Rating Certification Level - ICC-ES AC 156-2018 SDS=2.50 g z/h=0 Ip=1.5 Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 28 MEGAPACK SPECIFICATIONS Solar Loading Full apparent power capability and real power capability in all ambient temperature conditions and at maximum elevation up to 1200 W/m2 solar loading, in any direction (Ambient Temperature and Elevation on page 27) Wind Rating Able to withstand Category 5 hurricane sustained wind speeds of up to 157 mph (252 km/h) 3.9.1 Noise Specification and Guidance Each Megapack unit has rooftop fans as part of its thermal system. Megapack's main source of noise comes from these fans, for which there are two related option codes: • FN## (fan type) • TC#H (thermal configuration manufacturing option code that represents number of fans) The maximum audible noise specification is expressed as the sound pressure level (SPL) in decibels, and measured at a 10-meter (33-foot) distance from the enclosure at maximum thermal system operation. Refer to the relevant combination of option codes for the Megapack unit's specification: Table 29. Maximum Audible Noise Specification FN## TC2H/TC2P TC4H/TC4P FN01/FN02 71.2 dB(A) 68.9 dB(A) FN03 66.3 dB(A) 63.8 dB(A) ,i NOTE: In addition to Megapack unit differences, noise emission is affected by site-specific conditions such as ambient temperature and system dispatch profile. Maximum audible noise may generally only be reached under specific operating conditions. For the majority of the time, noise emitted by Megapack will be much lower. 3.9.2 Enclosure Color Megapack's exterior paint color code is RAL 9016 Traffic White. Touch-up paint ships as a Megapack accessory. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 29 MEGAPACK SPECIFICATIONS Figure 15. Megapack Enclosure Color �■ rases r r � Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 30 TESLA SYSTEM CONTROLLER SPECIFICATIONS 4 Tesla System Controller Specifications The Tesla System Controller hosts advanced software that provides the single point of interface through which plant operators control and communicate with a Tesla battery storage system. It supports a comprehensive set of telemetry reported at the system- and Megapack-level, and includes a flexible set of controls to manage real power, reactive power, islanding behaviors and more. The Tesla System Controller requires one or more supported SEL-735 meters to perform control functions. The meter provides frequency, voltage, real power, and reactive power information required for various controls functions and closed-loop control. This section defines the functional performance capabilities of Megapack that are available via the Tesla System Controller v2 Platform. i NOTE: Megapack is designed to comply with IEEE 1547-2018 communication and controls capabilities. ,i NOTE:Tesla does not guarantee that the telemetry or controls will be implemented exactly as written in this specification. Communication protocols and control mode APIs are subject to change but will ultimately address the functional behaviors herein. 4.1 Controls The Tesla System Controller v2 Platform is modular and adaptable to meet project-specific needs, which are primarily driven by site-specific electrical topology, interconnection requirements, and regional regulations. To satisfy these needs, systems can be operated either as Grid-Forming or Grid-Following. Additionally, the control platform uses a set of Archetypes (Archetypes on page 31), which serve different segments of the global battery energy storage market based on geographic region and interconnection types. Archetypes decrease project commissioning risk and time by defining, up-front, the required set of individual Control Elements (On-Grid Control Elements on page 42), their settings, and how they interact and behave as a control system. Depending on project-specific needs, including those driven by electrical topology, an Archetype will be selected and deployed during commissioning for a given project by Tesla. The overall control configuration of a site, defined by an Archetype and its settings, is called a Control Profile. 4.1.1 Archetypes Standard control Archetypes represent a type of project built with a Tesla battery system and specify metering installation requirements, pre-defined control functions (site- and inverter-level), and system behavior under special conditions based on the project's electrical topology. An Archetype can consist of one or more Sections, which correspond to portions of a single-line diagram (SLD) associated with specific Control Elements. Intermediate power transformers are supported in all Archetypes to facilitate projects that may include different voltage levels. Available Archetypes, in addition to summaries of their supported Control Elements, are described by type of project: Utility Archetypes on page 31 or C&I Archetypes on page 33. 4.1.1.1 Utility Archetypes The following Archetypes are designed for utility-scale projects: Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 31 TESLA SYSTEM CONTROLLER SPECIFICATIONS Table 30. Utility-Scale Archetypes Archetype Description Utility The Utility Battery Only Archetype is designed for front-of-the-meter, utility-scale storage projects. Battery Only This Archetype applies to on-grid projects consisting of a battery meter, a number of generator step-up transformers (GSU transformers), and feeders connecting to medium voltage transformers and Megapacks. The count of GSU transformers, feeders, and Megapacks can change based on project needs. Utility Co- The Utility Co-Located Plant (Battery Only) Archetype is designed for projects consisting of both Located batteries and solar generation assets in which only battery control is within Tesla's scope, or for Plant projects with multiple battery meters instead of a single battery meter at the point of (Battery interconnection. Only) Typically, the solar generation assets (PV) and battery will be located on different feeders behind the same generator step-up transformer (GSU transformer). Tesla's control scope ends at the battery meters and will not cover any constraints applying to combined output of the solar assets and batteries. Tesla assumes that a higher-level third-party controller, supplied by the customer, is responsible for managing any constraints of the co-located system. Utility Hybrid The Utility Hybrid Archetype is designed for projects consisting of both batteries and solar, where the system is being controlled as a single combined resource (referred to as a hybrid resource) and both solar and battery control is within Tesla's scope. Solar and batteries will usually be located on different feeders behind the same generator step-up transformer (GSU transformer). Tesla's control scope encompasses the entire hybrid resource up to the point of interconnection, and can include one or more GSU transformers. The system will accurately respond to customer-provided real power commands at the hybrid resource's point of interconnection (usually at high voltage). To do so, the Tesla System Controller automatically determines the contribution of solar and battery, prioritizes solar production, and performs closed- loop control at the point of interconnection. If required to meet the customer command, the Tesla System Controller will control solar inverters to curtail production. The Tesla System Controller also ensures GSU transformer nameplate limits are not exceeded by solar production and battery dispatch. Since the battery system is used in conjunction with solar to meet hybrid commands, independent control of the battery is not permitted. Customers are responsible for managing their hybrid commands based on their needs and their solar forecast. ,✓ NOTE:The Utility Hybrid Archetype requires integration with solar inverters or a Renewable Generation Controller, both of which are paid offerings. Refer to the Renewable Generation Controller Specification on the Tesla Partner Portal or contact your Tesla representative for more information. Table 31. Summary of Control Modes by Archetype (Utility-Scale Archetypes) Control Mode Utility Battery Only Utility Co-Located Plant(Battery Only) Utility Hybrid Grid-Following ✓ ✓ ✓ Grid-Forming ✓ ✓ Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 32 TESLA SYSTEM CONTROLLER SPECIFICATIONS Table 32. Summary of Control Elements by Archetype (Utility-Scale Archetypes) Control Element Utility Battery Utility Co-Located Utility Hybrid Only Plant(Battery Only) Meters Single battery One battery meter One busway meter at the point of meter per battery sub-site interconnection for the combined hybrid plant. One or more solar meter(s) and battery meter(s). External Interface ✓ ✓ ✓ Enable Manager ✓ ✓ ✓ Maintain Energy ✓ ✓ Ramp Rate ✓ ✓ ✓ (at the point of interconnection) Power Factor ✓ ✓ ✓ (at the point of interconnection) Voltage Control ✓ ✓ (at the point of interconnection) Frequency Droop ✓ ✓ (at the point of interconnection) Frequency Integral ✓ ✓ (at the point of interconnection) Fast Frequency Response ✓ (Low Frequency) Fast Frequency Response ✓ (High Frequency) Closed-Loop Control ✓ ✓ (At metered sub- ✓ (at the point of interconnection) site) Transformer Losses ✓ ✓ (At metered sub- ✓ (up to the point of interconnection) site) Combiner ✓ ✓ ✓ Battery Group ✓ ✓ ✓ Re-Engage Monitor ✓ ✓ ✓ Solar Controls ✓ Solar Battery Split ✓ Asset Power Manager ✓ Inverter Asset Group ✓ 4.1.1.2 C&1 Archetypes The following Archetypes are designed for commercial and industrial (C&I) projects: Table 33. C&I Archetypes Archetype Description Battery The Battery Dispatch Only Archetype is used in projects where Tesla provides control capabilities at Dispatch Only the battery-level. Site-level control capabilities are outside of Tesla's scope and must be managed by a third-party controller. Grid- The Grid-Connected Only Archetype is used in projects where the system is grid-connected and Connected Tesla provides both battery-level and site-level control capabilities. These projects consist of a net Only load meter, Tesla battery, and optional solar generation assets connected to the grid. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 33 TESLA SYSTEM CONTROLLER SPECIFICATIONS 7w Archetype Description Battery and site control can be managed either by Tesla controls such as Opticaster or by a third- party controller. Tesla's controls scope ends at the net load meter and includes control of the battery and solar generation assets (if solar exists). Solar control requires approved solar inverters as specified in the Tesla Industrial Energy Approved Vendor List on the Tesla Partner Portal. Backup The Backup Archetype is used in projects where the system is normally grid-connected and provides load backup in the event of abnormal grid conditions. Tesla provides battery-level, site- level, and islanding control capabilities. These projects consist of a Tesla battery and an Islanding Controller. Battery and on-grid site control can be managed either by Tesla controls such as Opticaster or by a third-party controller. Islanding transitions are managed by Tesla, whereas a third-party controller must be used for off-grid microgrid control, if needed. Off-Grid The Off-Grid Microgrid Archetype is used in projects where the system is an isolated grid capable Microgrid of supporting loads and managing battery operation in coordination with other generation assets. These projects consist of a Tesla battery and approved solar, generator, and/or wind assets while operating off-grid. Tesla manages the entire microgrid operation using its Microgrid Controller software. All third-party devices must be listed in the Tesla Industrial Energy Approved Vendor List on the Tesla Partner Portal. Grid- The Grid-Connected Microgrid Archetype is used in projects in which the system is connected to Connected the grid and is also capable of islanding, and charging or discharging in coordination with generation Microgrid assets in order to support loads. These projects consist of a Tesla battery and approved solar, generator, or wind assets while operating on-grid and off-grid. Tesla manages the entire site, including islanding transition between on- and off-grid operation. On-grid operation is managed by Tesla controls such as Opticaster. Off-grid operation is managed by Tesla's Microgrid Controller software. Table 34. Summary of Control Elements by Archetype (C&I Archetypes) Battery Grid-Connected Off-Grid Grid-Connected Control Elements Dispatch Only Only Backup Microgrid Microgrid External Interface ✓ ✓ ✓ ✓ ✓ Direct Real/Reactive (Ramp ✓ ✓ ✓ ✓ Rates) Operator Limits ✓ ✓ ✓ ✓ Active Power Limit ✓ ✓ ✓ ✓ Meters ✓ ✓ ✓ ✓ ✓ Closed-Loop Control ✓ ✓ ✓ ✓ Transformer Losses ✓ ✓ ✓ ✓ ✓ Maintain Energy ✓ ✓ ✓ ✓ Opticaster ✓ ✓ ✓ Frequency Droop ✓ ✓ ✓ ✓ Volt-Var ✓ ✓ ✓ ✓ Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 34 TESLA SYSTEM CONTROLLER SPECIFICATIONS Battery Grid-Connected Off-Grid Grid-Connected Control Elements Dispatch Only Only Backup Microgrid Microgrid Watt-Var ✓ ✓ ✓ ✓ Volt-Watt ✓ ✓ ✓ ✓ Power Factor ✓ ✓ ✓ ✓ Busway Limits ✓ ✓ ✓ On-Grid Solar Controls ✓ ✓ Meter-Based Trips ✓ ✓ Enter Service ✓ ✓ Reference Manager ✓ ✓ ✓ ✓ Enable Manager ✓ ✓ ✓ ✓ Islanding Controls Transition Management ✓ ✓ Off-Grid Operation ✓ ✓ ✓ State of Energy Frequency ✓ ✓ ✓ Management Enable Manager ✓ ✓ ✓ Microgrid Controls Spinning Reserve Controller ✓ ✓ Battery Energy Controller ✓ ✓ Operator Limits for Generation ✓ ✓ 4.1.1.3 Archetype Topologies A diagram of the electrical topology for each Archetype is provided below. In the diagrams, shaded areas represent different control sections as indicated in each diagram's legend. Icons in the diagrams generally indicate the following components: Figure 16. Icon Key O © ® O Aft O 1. Grid 2. Meter: At various locations, as indicated in diagrams 3. Transformer: With types indicated, including generator step-up (GSU), medium voltage (MV), low-voltage (LV) 4. Circuit breaker: Also abbreviated CB 5. Battery assets: Megapack units 6. Solar assets: Also abbreviated PV for photovoltaics Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 35 TESLA SYSTEM CONTROLLER SPECIFICATIONS Figure 17. Utility Battery Only Archetype - Electrical Topology & Control Sections CB MVILV MVILV MVILV rC MV/LV CB GSU MVILV MVILV . . .. . . . . . . . .. . . . . . . . 1 )H 7t CB Main-tie-Main(N.0)\ v CB `I Grid CB attery MV 1 LV Meter H I.it 1 I MV I LV 1 1 1 I MV/LV CB MVILV CB GSU MVILV MVILV . . . . . . . . . . . .. . . . . . .. M— CB (Control Sections L_.J On-Grid Battery Assets Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 36 TESLA SYSTEM CONTROLLER SPECIFICATIONS Figure 18. Utility Co-Located Archetype— Electrical Topology & Control Sections CB CS GSU CB MVILV Bauery Miler M V I LV IIH,■IIH,■IIH,■ I 1 I A MV LV /LV MVILV 43D- E MVILV MV I LV M— .......... CB ...... .... ^ Main-t -Main(N O) IIu_1 IIu_1 IIu_1 43D- v CB I I I Grid MVILV Bauery Me t�r M V/LV I I 1 Baucry MV/LV Meter CB MV/LV MV/LV MV/LV M— .......... .......... CB CB GSU CB Control Sections On-Grid Metered Battery Sub-Site Battery Assets Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 37 TESLA SYSTEM CONTROLLER SPECIFICATIONS Figure 19. Utility Hybrid Archetype - Electrical Topology & Control Sections CB MV/LV Solar Meer CB GSU CB MVILV MVILV I MV I I.V Ilr CB MVILV Bauer MeterY MVILV MV LV CB Main-tie-Main(N.G) v Ce Grid CB MVILV Bus MeteaiY MVILV II~ MV/LV CB MVILV ¶ MVILV MVILV . .......... .......... CB CB GSU Sm Mcre CB MV LV Control Sections ❑On-Grid ❑Hybrid Sub-Site ❑Metered Solar Sub-Site ❑Metered Battery Sub-Site ❑Solar Assets ❑Battery Assets Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 38 TESLA SYSTEM CONTROLLER SPECIFICATIONS Figure 20. Battery Dispatch Only Archetype— Electrical Topology & Control Sections MV/LV (as required) Battery , Meter V Utility MV/LV (as required) Battery Meter Load Control Sections ❑Metered Battery Sub-Site ❑Battery Assets Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 39 TESLA SYSTEM CONTROLLER SPECIFICATIONS Figure 21. Grid-Connected Only Archetype— Electrical Topology & Control Sections Solar Meter Utility MV/LV (as required) Net Load Batte ry Meter Meter Load Control Sections ❑On-Grid ❑Metered Solar Sub-Site ❑Metered Battery Sub-Site ❑Solar Assets ❑Battery Assets Figure 22. Backup Archetype— Electrical Topology& Control Sections I� Grounding Transformer Islanding ��1 Controller and Breaker Utility MV/LV (as required) Battery Net Load Meter Meter Load Control Sections L�On-Grid ■Islanding Control ❑Metered Battery Sub-Site ❑Battery Assets Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 40 TESLA SYSTEM CONTROLLER SPECIFICATIONS Figure 23. Off-Grid Microgrid Archetype— Electrical Topology& Control Sections I I Grounding Transformer Generator Gen. Meter LSolar Meter MV LV (as required) Battery Meter Load Control Sections ❑Microgrid Control Metered Generator Sub-Site Metered Solar Sub-Site ❑Metered Battery Sub-Site ❑Solar Assets ❑Battery Assets Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 41 TESLA SYSTEM CONTROLLER SPECIFICATIONS Figure 24. Grid-Connected Microgrid Archetype- Electrical Topology & Control Sections I Grounding Transformer Generator Gen. Meter F_ Islanding �—�fCBV I{••� reaker \.d Utility MV/LV (as required) Battery Net Load Meter Meter Solar Meter Load Control Sections On-Grid Islanding and Microgrid Control Metered Generator Sub-Site Metered Battery Sub-Site Metered Solar Sub-Site Battery Assets Solar Assets 4.1.2 Control Elements This section details all supported Control Elements. Tesla continues to develop new Control Elements to meet project and market needs. Control Elements each have a defined logic, settings, inputs, and outputs. Available Control Elements and how they interact are determined by the site's Control Profile. 4.1.2.1 On-Grid Control Elements The table below provides an overview of on-grid Control Elements. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 42 TESLA SYSTEM CONTROLLER SPECIFICATIONS Table 35. On-Grid Control Elements Control Element Description External Interface Provides customer-facing Modbus & DNP3 interfaces to interact with the system. Rejects writes that are outside of acceptable values. Ramp Rate Includes Direct Real Power and Direct Reactive Power. Limits the rate of change of Direct Real and Direct Reactive power commands. Closed-Loop Regulates the Real and Reactive power output, as measured at the meter, to accurately meet Control the total power commands. Meters Interfaces with a meter (SEL-735). Meter readings serve as inputs to various Control Elements. Frequency Droop Inject or absorbs real power in response to changes in frequency according to a droop curve. Frequency Integral Performs integral regulation of the Frequency. Fast Frequency Immediately dispatches real power for a given duration when frequency drops below a Response (Low threshold. Frequency) Fast Frequency Immediately absorbs real power for a given duration when frequency exceeds a threshold. Response (High Frequency) Maintain Energy Commands the system to reach and maintain a specific energy value. Power Factor Enforces a specific Power Factor value at the meter. Voltage Control Regulates voltage to a Voltage Reference by injecting or absorbing reactive power in response to voltage fluctuations. Automatic Failover Allows for an automatic failover for redundant Tesla System Controllers. Note: Automatic Failover is a paid SCADA adder which must be selected at contracting to ensure proper SCADA system design. Automatic Failover is currently not part of a standard Archetype. Enable Manager Enables or disables behaviors based on specific system conditions. Transformer Losses Allows feed-forward compensation of transformer and conductor losses between the battery meter and the Megapacks. Combiner Aggregates commands from all Control Elements and enforces operator and nominal limits. Battery Group Represents the aggregation of Megapacks. The Battery Group splits the total Real and Reactive commands between individual Megapacks while ensuring the total command is met and balances energy between Megapacks for optimal performance. Re-Engage Monitor Handles the system's behavior during an unplanned restart of the Tesla System Controller or its control application, to prevent undesirable control behaviors. Reference Manager Provides voltage and frequency references to the inverters for grid forming. Solar Controls Solar Controls allow an operator to apply a curtailment command (the User Solar Limit) as an aggregate to solar inverters, regardless of the battery system's behavior, via external interfaces. Solar Controls also report the solar curtailment limit applied to inverters, either as a result of the User Solar Limit or by other control elements (such as Solar Battery Split on hybrid systems). Solar Battery Split In a hybrid system, the Solar Battery Split allows to determine the battery and solar real and reactive power contributions. Asset Power The Asset Power Manager is used on solar sub-sites and handles the sub-site's power output Manager and reporting in case of inhibit or sub-site meter invalid conditions. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 43 TESLA SYSTEM CONTROLLER SPECIFICATIONS Control Element Description Inverter Asset Group The Inverter Asset Group represents an aggregation of one or more inverters or a solar plant controller and is used on systems interfacing with inverter assets (non-Tesla), such as solar. Volt-Var Volt-Var provides a reactive power response from the battery system based on a voltage measurement, according to a voltage-reactive power curve. Volt-Watt Volt-Watt limits the real power output of the battery system based on a voltage measurement, according to a voltage-watt power curve. Watt-Var Watt-Var provides a reactive power response from the battery system based on a real power measurement, according to a real-reactive power curve. Busway Limits Busway Limits use the battery system to limit real power flow at specific meter locations in the system. Meter-Based Trips Meter-Based Trips enforces trip and reconnect thresholds on the battery system based on compliance requirements. Opticaster Opticaster, Tesla's autonomous site control software, is designed to maximize economic benefits for grid-connected customers. Opticaster forecasts load and solar production, optimizes battery dispatch to reduce electricity bills, maximizes consumption of on-site renewables and enables various types of grid services. 4.1.2.21slanding Control Elements The islanding control elements are only available to sites designed for islanding and which have an approved islanding controller. .i NOTE: Islanding controls are offered at an additional price and must be selected at contracting to ensure proper design. Table 36. Islanding Control Elements Name Description Transition Management Manages islanding transition preferences, including automatic or user-triggered synchronization. Off-Grid Operation While operating off-grid, isochronous controls provide automatic frequency control and automatic voltage regulation. Voltage and frequency references are static and set at commissioning. Black Start Black Start Retry In response to a dead bus, the battery system can be configured to either automatically retry or wait for a user-initiated Black Start. State of Energy Management Frequency Shifting The battery system can be configured to shift frequency reference as a function of the system's state of energy, which is used to trigger frequency-dependent control functionality of other components of the microgrid (for example, with active power reduction of solar inverters). Wait for Behaviors The battery system will operate using specific state of energy thresholds designed to prevent full depletion of batteries while off-grid. Options include: 1) Waiting for Solar, 2) Waiting for User, and 3) Waiting for AC. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 44 TESLA SYSTEM CONTROLLER SPECIFICATIONS Name Description Islanding Enable Enables or disables control features based on user input and system conditions to achieve Manager fail-safe behaviors. Checks are performed on faulted hardware, adequate state of energy, and loss of communications with islanding controller. 4.1.2.3 Microgrid Control Elements The microgrid control elements are only available to sites designed for islanding and which have an approved islanding controller, or to off-grid only microgrids managed by the Tesla System Controller. i NOTE: Microgrid controls are offered at an additional price and must be selected at contracting to ensure proper design. Table 37. Microgrid Control Elements Name Description Spinning Reserve Manages active battery and generation assets in the microgrid with the objective of Controller maintaining sufficient reserve capacity upward and downward to serve sudden changes in net load. Battery Energy Operates battery between max and min state of energy (SOE) setpoints to ensure sufficient Controller space is allowed for intended end-of-charge and end-of-discharge behaviors, ensuring stable and reliable operation of the microgrid. At low SOE, available generators are started. At high SOE, excess renewable generation is curtailed. Operator Limits for Operators can issue commands to limit renewable resource contribution, specify generator Generation reserve, and directly dispatch generators. 4.1.3 Battery Switches Battery Switches control the State, Mode, Heating, Peak Power, and Black Start functionality of the Megapacks. Customer inputs for Battery Switches are described below: Table 38. Customer Inputs Parameter Name Description State Request Commands the state of batteries: 0 = Off, 1 = On (required to operate), and 99 = Emergency Off. Note: Commanding the system to Off or Emergency Off is not a replacement for performing proper de-energization procedures in order to perform work, as described in the product's Design and Installation Manual on the Tesla Partner Portal. Mode Request Commands the mode of batteries: 1 = Grid-Following, 2 = Grid-Forming. Grid-Forming may not always be allowed by configuration. Note:The battery system can be configured to emulate a virtual synchronous machine and provide grids with inertia, which can help stabilize system frequency and provide system strength. Black Start Commands the batteries to black start the grid: 0 = No Black Start, 1 = Black Start Now. Note: Request Black start is only available on systems that are designed to grid-form and must be enabled by Tesla at commissioning. Peak Power Enable Peak Power with 1, disable with 0. Peak Power should only be used according to the Enable contract and may have warranty implications. Heat Mode Enable Heat Mode with 1, disable with 0. Enable Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 45 TESLA SYSTEM CONTROLLER SPECIFICATIONS 4.2 Telemetry This section provides a summary of system-level and Megapack-level telemetry points and alerts reported by the Tesla System Controller over supported communications interfaces. Supported interfaces include Modbus and DNP3. System-level monitoring and control is available over DNP3 and Modbus. Megapack-level monitoring is available over DNP3. .� NOTE:Accurate time-stamping of Megapack-level alerts requires a GPS clock as NTP server on the Tesla Network and additional configuration to be performed at commissioning. Refer to the SCADA Design Manual on the Tesla Partner Portal for additional information. Table 39. System-Level Telemetry and Alerts Data Source Name Description SI Units Tesla System Tesla System Tesla System Controller software version number. N/A Controller Controller Firmware Version Dispatchable Charge Negative value. Power that is immediately available to charge the W Power system, taking into account system conditions and excluding power from faulted components. This value applies at the AC output terminals and is not limited by Real Power Charge or Operator Limits. Dispatchable Power that is immediately available to discharge the system, W Discharge Power taking into account system conditions and excluding the power from faulted components. This value applies at the AC output terminals and is not limited by Real Power Discharge and Operator Limits. Dispatchable Immediately available apparent power. VA Apparent Power Full Battery Energy Energy capacity of the system when fully charged. Excludes the Wh energy of faulted components and of the battery without AC voltage. Remaining Battery Energy currently available to discharge. Wh Energy Auxiliary Power Power drawn to support the Megapack internal controls and W thermal management loads, not including battery inverter losses. This power may be drawn from the grid and/or battery modules. Aggregated for all Megapacks currently reporting to the Tesla System Controller. Number of Available Number of batteries available for operation. N/A Megapacks Not Substantially Will assert when the battery system's dispatchable apparent N/A Available power is below a threshold (80% by default) of the Nominal Apparent Power. When the site is Not Substantially Available, elements integrators will be disabled. Real Power Available The battery system is not able to meet the total real power N/A Limited setpoint because the requested power exceeds the Nominal Real Power or the Real Operator Limits. Reactive Power The battery system is not able to meet the total reactive power N/A Available Limited setpoint because the requested power exceeds the Nominal Reactive Power or the Reactive Operator Limits. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 46 TESLA SYSTEM CONTROLLER SPECIFICATIONS Data Source Name Description SI Units Customer Command The Tesla System Controller has not received any commands N/A Timed Out from a Modbus client for a duration greater than the command timeout configured, and the last command has timed out. The battery system will stop operating. Meter Invalid Meter data is currently invalid. N/A Meter Meter Real Power Total 3-phase Real Power, as read from the Meter. W Meter Reactive Total 3-phase Reactive Power, as read from the Meter. var Power Meter Voltage Average line-to-line RMS voltage, as read from the Meter. V Meter Frequency Frequency, as read from the Meter. Frequency is filtered and can Hz be overwritten by Tesla for specific tests. Meter Energy Import Energy Accumulator - lifetime energy imported (charged) by the Wh battery, as read from the Meter. Meter Energy Export Energy Accumulator - lifetime cumulative energy exported Wh (discharged) by the battery, as read from the Meter. Meter Invalid Meter data is currently invalid: Readings are out of bounds, meter has lost communication, or a PT/CT failure has occurred (if applicable). Table 40. Megapack-Level Telemetry and Alerts Type Name Description SI Units Analog Inputs Megapack Real Power Command the Tesla System Controller is sending to the W Target Megapack. Megapack Real Power Real power measured by the Megapack. W Megapack Reactive Command the Tesla System Controller is sending to the var Power Target Megapack. Megapack Reactive Reactive power measured by the Megapack. var Power Megapack State of State of energy of the Megapack. % Energy Megapack Energy Energy available from Megapack to discharge at nominal Wh Remaining operating conditions. Megapack Charge Estimated energy to charge the Megapack until full; subtracts Wh Capacity Remaining energy to charge faulted components. Full Pack Energy Usable energy capacity when Megapack is fully charged and Wh at nominal operating conditions. Megapack Frequency Hz Battery AC Voltage Phase-to-ground RMS voltage, average of all three phases. V rms Megapack Phase (A/B/C) Phase-to-ground RMS voltage (A/B/C). V rms Voltage Megapack Phase (A/B/C) Phase current (A/B/C). A rms Current Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 47 TESLA SYSTEM CONTROLLER SPECIFICATIONS Type Name Description Sl Units Maximum Battery Maximum cell temperature in the battery modules. C Temperature Ambient Temperature Ambient temperature measured inside the Megapack C enclosure. Megapack Available Available Charge Power of the Megapack, aggregated from W Charge Power battery modules and inverters; updates based on grid voltage; subtracts faulted components. Megapack Available Available Discharge Power of the Megapack, aggregated from W Discharge Power battery modules and inverters; updates based on grid voltage; subtracts faulted components. Megapack Nominal Nominal charge power of the Megapack, aggregated from W Charge Power battery modules and inverters, assuming nominal voltage; includes faulted components. Does not include missing or disconnected components. Megapack Nominal Nominal discharge power of the Megapack, aggregated from W Discharge Power battery modules and inverters, assuming nominal voltage; includes faulted components. Does not include missing or disconnected components. Binary Inputs Loss of Megapack The Tesla System Controller has persistently lost N/A Communication communication with the Megapack, meaning the Tesla System Controller has not received Megapack communications for the timeout duration of 120 seconds, unless otherwise configured. Megapack power output will ramp down over the course of 60 seconds. Megapack Isolation Megapack has reported an isolation measurement below its N/A Failure acceptable threshold. Megapack Inverter Fault All inverters in the Megapack are faulted. N/A Enable Circuit Open Megapack enable circuit is open. N/A Enable Switch Off Megapack enable switch is in the off position, preventing N/A operation. AC Breaker Status Megapack AC circuit breaker status (open/closed). N/A Bus Controller Prolonged Megapack has experienced several consecutive faults and has N/A Fault entered a prolonged fault state, which will stop operation temporarily. Remote Shutdown Remote shutdown is being commanded via customer external N/A 1/O. Coolant Low Coolant level is low as reported by the coolant sensor. N/A Extreme Temperature The Megapack has detected a temperature increase above the N/A Warning temperature increase warning threshold. Extreme Temperature The Megapack has detected a temperature increase above the N/A Fault temperature increase fault threshold. Grid Uncompliant The Megapack has measured an over/undervoltage, over/ N/A underfrequency or zero sequence overvoltage outside of its hardware protection trip thresholds. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 48 TESLA SYSTEM CONTROLLER SPECIFICATIONS Type Name Description SI Units Breaker Irrational The Megapack AC circuit breaker is reporting open and N/A closed simultaneously. Breaker Ready to Close The Megapack AC circuit breaker spring is charged, either N/A manually or via motor reclose, and the breaker can close now. Power Electronics Over Megapack power electronics are experiencing an over- N/A Temperature temperature condition. Low State of Energy Megapack is at very low state of energy and must be charged N/A as soon as possible to avoid cell damage. Megapack Disabled The Megapack is disabled, meaning its battery modules and N/A thermal system are commanded to the Off state.Warning:This does not replace the need for operators to follow proper de- energization procedures. Sparker Fault One or more Sparkers are behaving incorrectly. Sparkers are N/A located inside the Megapack and control the levels of combustible gas by providing a spark to combust low levels of these gasses before they accumulate. OV Ride Through Active The Megapack has detected an overvoltage based on its N/A overvoltage ride-through trip settings and will trip if the overvoltage persists. UV Ride Through Active The Megapack has detected an undervoltage based on its N/A undervoltage ride-through trip settings and will trip if the undervoltage persists. OF Ride Through Active The Megapack has detected an overfrequency based on its N/A overfrequency ride-through trip settings and will trip if the overfrequency persists. OF Ride Through Active The Megapack has detected an underfrequency based on its N/A underfrequency ride-through trip settings and will trip if the underfrequency persists. Binary Open Megapack Breaker Write to 1: Opens the Megapack AC circuit breaker. Must be N/A Outputs configured by Tesla at commissioning. Close Megapack Breaker Write to 1: Closes the Megapack AC circuit breaker. N/A Disable Megapack Write to 1: Brings all battery modules into standby state and N/A brings the thermal HVDC bus down Warning:This does not replace the need for operators to follow proper de- energization procedures. 4.3 Configurable Parameters This section outlines some of the key configurable parameters supported by the system. Static limits are established during the site commissioning phase and require support from Tesla technical support teams to update. Static limits often represent physical constraints of the site (for example, transformer or conductor sizing) and should not change often. Dynamic limits can be updated in operation by the operator via supported local communications interfaces. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 49 TESLA SYSTEM CONTROLLER SPECIFICATIONS Table 41. Configurable Parameters Type Name Type Description Nominal Values Nominal Real Power Static Nominal discharge power of the site. The maximum power that Discharge can be discharged. Nominal Real Power Static Nominal charge power of the site. The maximum power that can Charge be charged. Nominal Reactive Static Nominal reactive power of the site. The maximum reactive Power power that can be injected or absorbed. Nominal Frequency Static Nominal grid frequency (60 Hz or 50 Hz). Nominal Energy Static Nominal energy capacity. The contractual energy capacity of the system. References Reference Frequency Dynamic The reference frequency for Frequency Droop, Frequency Integral and Grid-Forming applications. Reference Voltage Dynamic The reference voltage for Voltage Control and Grid-Forming applications. Ride-Throughs Voltage Ride-Through Static Site-level voltage ride-through settings. Frequency Ride- Static Site-level frequency ride-through settings. Through Limits Export Limits Static Set allowed grid export limits (none, solar only, battery and solar). Charge from Solar Static Limit battery system to only charge from solar generation. Bus Export Limit Static Limit combined solar and storage dispatch on a shared bus to remain below ampacity limits. NOTE: Requires a supported meter on the bus to regulate. __J Operator Limits Real Operator Limit Dynamic The maximum real power limit allowed at the specified Maximum measurement point. Real Operator Limit Dynamic The minimum real power limit allowed at the specified Minimum measurement point. Reactive Operator Dynamic The maximum reactive power limit allowed at the specified Limit Maximum measurement point. Reactive Operator Dynamic The minimum reactive power limit allowed at the specified Limit Minimum measurement point. 4.4 Response Time This section documents the transition time between states and rise time in response to a power command or a change in frequency. This section also provides an example of the step response behavior given specific assumptions. 4.4.1 Transition Time The table below shows the transition time of the Megapack System. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 50 TESLA SYSTEM CONTROLLER SPECIFICATIONS Table 42. Transition Time State Request Transition Time Off to On 90 s On to Off 180 s 4.4.2 Rise Time and Reaction Time The tables below show the rise time and reaction time of the Megapack System. These characteristics are measured at the meter using meter event recording capabilities and assume the following conditions: • The Tesla System Controller and the meter are synchronized to a common time source • The State Request is set to On • The Ramp Rate is set to a large W/s value (in other words, there are no limitations on ramp rate) • The short circuit ratio at the inverter-level is at least 2.6 (for example, an inverter-level short circuit ratio of 2.6 with an impedance of 0.015+j0.14, in per unit for 33 kV and a 100 MVA base, corresponds to a grid short circuit ratio of 4.2) Table 43. Rise Time Control Element Start Condition Rise Time to 95%of Rise Time to 98%of Command measured at Command measured at the Meter the Meter Direct Real Power When the Tesla System Controller <_ 200 ms <_ 250 ms Command receives the command Direct Reactive When the Tesla System Controller <_ 200 ms <_ 250 ms Power Command receives the command Frequency Droop When Reference Frequency exceeds <_ 200 ms <_ 250 ms the Lower Deadband or the Upper Deadband Table 44. Reaction Time Control Element Start Condition Reaction Time(10%of Command measured at the Meter) Direct Real Power Command When the Tesla System Controller receives the 65 ms command Direct Reactive Power When the Tesla System Controller receives the 65 ms Command command 4.4.3 Step Response Example .r` NOTE:The step response behavior of the Megapack System varies depending on Megapack System configuration, site design, and grid conditions. For example, a lower short circuit ratio or a lower grid voltage may result in higher overshoot, longer settling time, and longer time to steady state, particularly for reactive power. The example below shows the indicative step response behavior of the Megapack System. These characteristics are measured at the meter using meter event recording capabilities and assume the following conditions: • The grid has a short circuit ratio of 40 • The Mode Request is set to Grid-Following Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 51 TESLA SYSTEM CONTROLLER SPECIFICATIONS • The Megapack System is operating as a battery-only project • The Megapack System is designed to operate within +/- 0.95 power factor • The Megapack System is operating at the nominal grid voltage • For the real power step response behavior, the command is equal to the Nominal Real Power Discharge or Nominal Real Power Charge of the Megapack System • For the reactive power step response behavior, the command is equal to the Nominal Reactive Power of the Megapack System • Voltage Control is disabled • Closed Loop Control is enabled Figure 25. Step Response Example - - - - - - - - - - - - - - - - - - - - vers oo — Steady State Error 2% I Comman ..................I........i............................................................................... - I I I I I Rise Time I I I I I I I I I I I I Settling Time I I I I I Time to Steady State I I I I I I I I I I Power Table 45. Step Response Example Characteristic Description Real Power Reactive Power Overshoot Difference between the maximum Meter Real Power <— 3% <— 3% or Meter Reactive Power and the command, divided by the command Settling Time Duration between when the Tesla System Controller <_ 5 s <— 5 s receives the command and when the Meter Real Power or Meter Reactive Power settles within 2% of the final steady state value after overshoot Time to Steady Duration between when the Tesla System Controller <—45 s <—45 s State receives the command and when the Meter Real Power or Meter Reactive Power settles within an error band equal to the steady state error around the final value Steady State Error Error remaining between the Meter Real Power or <— 0.2% <— 0.2% Meter Reactive Power and the command, in steady state, divided by the command Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 52 TESLA SYSTEM CONTROLLER SPECIFICATIONS Characteristic Description Real Power Reactive Power i NOTE:On sites with energy overbuild or long system duration (6+ hours), the steady state error can increase up to 0.4% due to the increased number of battery units and inverters on the site. .� NOTE: If the Mode Request is set to Grid-Forming, the step response behavior will depend on project-specific modeling and configuration. These characteristics will not only include the response to the Direct Real Power Command and the Direct Reactive Power Command but also the inertial response, meaning the response will not be a step. Contact your Tesla representative for more information. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 53 POWERHUB 5 Powerhub Powerhub is a cloud-based monitoring and diagnostics platform that provides data for single sites or aggregated across portfolios of sites. Devices, alerts, health checks, and real-time power flows are available in site view. Historical data can be reviewed in a graphing interface, providing visibility into site-level behavior and allowing data to be exported to a CSV file format. Access to Powerhub is included by default for all Megapack customers. For more information, see the Application Note: Powerhub for Megapack and Powerpack on the Tesla Partner Portal. Figure 26. Powerhub Site View r a s�n z mm as nwsnanans zma w.„mwq.�w.rnosm.i .,,o->. oiag—fics Devices 513.2 kW T�s.pe,�na,ye._sa„ B.na_Me..k �•." �.ee,m,.va�r xv�.av�n<�aw. .re..,ms as. .,nnmr... aysuan v�rmmvim O catrvan,n M1,m oge .. 9F56,IdV• rmnmxer.avaawzm`e'age wHerrcpmtm ws,ne a9c7nan '�-ya-nz, gAvursa - p csmw n,a,.a p�. BelwmMlne6mm o g� e ®woven Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 54 STANDARDS AND REGULATIONS 6 Standards and Regulations Refer to the Megapack 2 XL Compliance Packet on the Tesla Partner Portal for a full compliance packet of completed certifications in all regions. 6.1 Safety Certification and Hazard Mitigation Megapack is designed to comply with major market grid codes, including the following standards, by OSHA- recognized Nationally Recognized Testing Laboratories: • UL 1642 (cell-level certification) • UL 1973 and IEC 62619 (battery module-level certification) • UL 9540, IEC 62933-5-2, IEC 62109-1 (system-level certification) • UL 1741, CSA C22.2 #107.1 (power electronics) • UL 1998 and IEC 60730 Annex H (functional safety of software) • IEC 61000-6-2, and EN 55011 (EMC) • UN 38.3 (transportation, self-certified) • IEEE 693 (seismic safety) • UL 9540A (large-scale fire testing): Tested at the cell, module, and unit level Megapack is designed to comply with major installation codes for energy storage systems, including NFPA 855, IFC 2018 and 2021, and NEC 2020. In addition to providing product safety features (Hazard Mitigation Features on page 11), Tesla conducts extensive analysis and testing to assess hazardous conditions related to Tesla products. Megapack includes multiple layers of protection to mitigate hazardous electrical and fire conditions. Megapack has been reviewed and validated by an Independent Engineer, both at the product level and for the results of large-scale fire testing. Megapack neither contains nor needs built-in smoke, gas, or fire detection or suppression devices. When required by the AHJ,third-party multi-spectrum IR heat or flame detectors can be installed externally at the site-level. Refer to the Industrial Lithium-Ion Battery Emergency Response Guide on the Tesla First Responders Information page at https://www.tesla.com/firstresponders for detailed hazard and response information. 6.2 Environmental Compliance Each Megapack contains coolant and refrigerant in its thermal system. These substances are built into the Megapack and do not need to be added at the time of installation at site. Depending on the number of Megapacks installed on a site, storage, use and handling of these substances during maintenance events may require reporting, hazard management plans, or containment procedures as required by local codes. Megapack's enclosure is designed with an integrated 900 L gravity-fed secondary coolant containment basin in its enclosure base in accordance with Title 40 CFR 264.175. Should an internal coolant leak occur, a gutter system directs coolant away from the batteries to the base of the enclosure to a central location in the AC bus bar area of the Customer Interface Bay. In addition, Megapack has a coolant reservoir level indicator that will alert Service Providers to be dispatched for investigation. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 55 STANDARDS AND REGULATIONS 6.3 Cybersecurity Tesla is continually assessing Megapack System security and its compliance with various cybersecurity standards applicable to battery energy storage systems. Tesla has programs, policies, and processes that cover critical cybersecurity items, including the following: • Personnel risk assessment, training, background checks, awareness • Access management and control • Electronic security perimeters and electronic access methods • Incident response • Continuity of operations (recovery and business continuity) • Configuration change management • Vulnerability assessments and patching process • Transient cyber assets and removable media In addition, Tesla provides a list of cybersecurity mandates and recommendations to ensure vulnerabilities within the overall SCADA network are mitigated. Mandatory items include changing default passwords, disabling unused wireless interfaces, access control and review, and system change management. Recommended items include network scanning, password strengthening, disabling unused ports and services, timely patch implementation, and multifactor authentication. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 56 SITE DESIGN CONSIDERATIONS 7 Site Design Considerations This section provides key information about how to design and install a Megapack site. Unless otherwise specified, Tesla shall not be responsible for the scope described in this section. _40- NOTE: For comprehensive site design and installation guidance, refer to the Megapack 2 XL Design and Installation Manual on the Tesla Partner Portal. 7.1 Routes and Zones A site generally consists of routes and zones as indicated below. A route is defined as the full path between two or more locations and includes the surface being traveled upon. A zone is a defined area of the site that is typically distinguished by function. A zone can be in multiple locations on a site and is dependent on the site layout. Routes and zones are generally allowed to overlap as needed. j ,✓` NOTE: Route and zone requirements are for non-emergency operations only. Follow local codes and standards as appropriate for emergency vehicle access. Figure 27. Routes and Zones -- Example IF 1. Delivery Route 2. Service Access Route 3. Battery Service Route 4. Construction Staging Zone 5. Crane Zone 6. Battery Zone: • Foundation Zone • Battery Service Zone 7. Parking Zone 8. Service Staging Zone Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 57 SITE DESIGN CONSIDERATIONS 7.1.1 General Requirements The design of routes and zones must abide by the requirements described in this section. Due care must be taken to engineer and install appropriate surfaces in all routes and zones for the full duration of the project's life. All routes must be wide enough to support the wheel swept-path of designated vehicle types and strong enough to support the designated vehicle axle loads. Other infrastructure crossing routes at or below grade (water, electrical, or drainage) should be reviewed in detail to make sure there are no conflicts. It is recommended to include geotechnical engineering stakeholders and craning and logistics providers early in the site design process to ensure all other considerations (such as crane type or delivery vehicle needs) are incorporated. Refer to the Megapack 2 XL Sample Engineered Template on the Tesla Partner Portal for assistance with calculations and vehicle blocks to support swept-path analysis. Contact your Tesla representative with any deviations. Table 46. Example Route Design Considerations Minimum Route Width: Linear Driving Minimum Route Width: Around Turns Minimum Intersection Turn Radius CAUTION:Standing water in any routes or zones may impact serviceability or structural integrity and should be mitigated as much as possible. .i NOTE:The requirements for routes and zones generally apply at any site regardless of whether it is a single- or multiple-battery site. Contact your Tesla representative for more information. Table 47. General Requirements for All Routes and Zones Slope Vehicle Requirements Surface Conditions Battery Service Zone: Support for axle loads for designated Required: • Maximum 5% in any direction vehicle types. No potholes, ruts, or standing water. Foundation Zone: Support for adequate width for Adequately compacted and safe for people to work • Refer to Foundation on page 65 designated vehicle travel. on and for designated vehicle types to operate on. • Support for minimum turning radii of Engineered with sufficient grip to provide tire All other routes and zones: designated vehicle types. traction. • Maximum 5% cross slope Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 58 SITE DESIGN CONSIDERATIONS Slope Vehicle Requirements Surface Conditions • Maximum 10% slope (grade) Recommended: • All-weather surfaces that will not require major upkeep and resurfacing after significant weather events. • A material that has been specified by the local or regional Department of Transportation. • Graded or crowned surface to shed water and prevent ponding. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 59 SITE DESIGN CONSIDERATIONS 7.1.2 Route Requirements Uses and additional requirements and recommendations specific to each route are described below. Table 48. Route Uses and Requirements Route or Use Designated Vehicle Types Requirements and Recommendations Zone Delivery Transport between the public right-of- Megapack delivery vehicle Required: Route way, the designated project entrance, and Delivery vehicles and cranes must have a valid route the vehicle unloading point (Crane Zone or • Crane to all designated Crane Zones and/or Construction Construction Staging Zone). Utility vehicle Staging Zones for installation. • Telescopic forklift • Fixed-mast forklift Recommended: • Looped route or cul-de-sac to avoid needing to • Service delivery vehicle reverse the delivery vehicle for long distances. • Ability for delivery vehicle to back into or pull alongside the Crane Zone for greatest efficiency. Service Transport between the public right-of-way Megapack delivery vehicle No additional requirements. Access and the Service Staging Zone. Route • Crane • Utility vehicle • Telescopic forklift • Fixed-mast forklift • Service delivery vehicle Battery Transport between the Service Staging Fixed-mast forklift Required: Service Zone and each Battery Service Zone. Designated vehicle types must have a valid route from Route Utility vehicle the public right of way to the Service Staging Zone to every Battery Service Zone. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 60 SITE DESIGN CONSIDERATIONS 7.1.3 Zone Requirements Descriptions and additional requirements and recommendations specific to each zone are described below. Table 49. Zone Descriptions and Requirements Route or Zone Description Designated Vehicle Requirements and Recommendations Types Construction Portions of the site set aside for construction activities. Typical Megapack Recommended: Staging Zone uses include material handling and temporary stockpiling, delivery vehicle Consider that it is common for the equipment and contractor parking, and occasionally the storage construction staging zone to overlap of battery units. • Crane with the service staging zone. • Utility vehicle • Telescopic forklift • Fixed-mast forklift Crane Zone Portions of the site that have been allocated for the set up or Crane Required: operation of a crane. Depending on the delivery logistics plan, additional clearances or surface load considerations may be required if delivery vehicles need to be within close proximity of the crane. Battery Zone— The area upon which the battery unit is installed. None Refer to Foundation on page 65. Foundation Figure 28. Megapack Foundation Zone - Side View .o CAUTION:The Foundation Zone =� must be protected from flooding. If more than 15 cm (6 in) of water are standing in the zone for longer than 30 minutes, the system must be 0 shut down and a Service Provider must be contacted. Battery Zone— The area in which service actions take place, as defined in Required: • Utility vehicle Battery Service Clearance - Battery Service Zone on page 67. Fixed-mast Zone forklift Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 61 SITE DESIGN CONSIDERATIONS Route or Zone Description Designated Vehicle Requirements and Recommendations Types • Supporting at least two egress routes, one in each direction, for people to vacate the zone on foot in the event of an emergency. Parking Zone Vehicle parking, required at all stages of the project life, but the Required: • Utility vehicle quantity and usage of the parking will vary. Cannot overlap with listed equipment clearances on site. • Does not obstruct any of the delivery or service routes. • Parking stalls no smaller than 5.5 m x 2.75 m (18 ft x 9 ft). Recommended: • Temporary parking may be a good option for the surge in parking need during the construction of the project. Service Staging Portions of the site set aside for service preparation activities. Utility vehicle Required: Zone Typical uses include material handling and temporary stockpiling, Must be able to support a service and occasionally the storage of supplies. Telescopic _ forklift delivery vehicle being unloaded by a NOTE: Details of this zone are provided in the Application forklift with sufficient room for the • Fixed-mast forklift and load to maneuver around Note: On-Site Maintenance Infrastructure Requirements forklift on the Tesla Partner Portal. the delivery vehicle. • Service delivery vehicle Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 62 SITE DESIGN CONSIDERATIONS 7.1.4 Typical Vehicles Various vehicles are required to access routes and zones at the site as designed by the engineer of record. The figure below shows the relative scale of typical vehicles compared to the Megapack: Figure 29. Typical Vehicle Scale Compared to Megapack (Examples) i .. e 7.2 Site Components In addition to the Megapack System components provided by Tesla (Megapack System Components on page 4), a Megapack site may require other equipment as outlined below. Table 50. Overview of Site Components Component Details Meters The Tesla System Controller uses various meter inputs for different control functions. The Tesla System Controller only supports the SEL-735 Power Quality and Revenue Meter. Transformers Any transformer connected to a Megapack requires a solidly grounded circuit to operate. The Megapack terminals shall be connected to the wye side of a transformer. The transformer may be a step-up/step-down transformer, a grounding transformer, or an isolation transformer. Megapacks do not require galvanic isolation from each other and may be connected in parallel on a single secondary (low-voltage side) transformer winding. Line reactors Megapack may require the use of line reactors to mitigate resonance in certain circumstances where other loads are connected to the Megapack at the Megapack nominal voltage. Substations, A Megapack site requires protection and isolation for life safety, equipment safety, and switchgear, and maintenance purposes. Substations, switchgear, circuit breakers, protective relays, and other electrical disconnect switches may be used to control, protect, and isolate electrical equipment at protection devices various voltage levels on a site. Networking A Megapack site requires communication between the Tesla System Controller, Megapacks, and all meters over TCP/IP. The communication network is recommended to be resilient and fully redundant, use a single logical architecture that can scale, and be secure by applicable cybersecurity standards. The Tesla System Controller also requires an internet connection. Supervisory The Tesla System Controller can be integrated with a supervisory control and data acquisition control and data (SCADA) system to expand its functionality. SCADA components may include other acquisition controllers, computers, network clocks, and uninterruptible power supplies. Maintenance A Megapack site may require on-site maintenance infrastructure for rapid and effective infrastructure maintenance. The maintenance infrastructure generally consists of dedicated areas, storage containers, and office trailers designed to support Tesla Energy Service. Access, security, A Megapack site needs to be accessible to authorized personnel and shall be installed in a and lighting manner that restricts access by persons who are not qualified. When restricting access, fences, screens, walls, or barriers are suggested. A Megapack site may require security and lighting. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 63 SITE DESIGN CONSIDERATIONS 7.3 Transportation Considerations Megapack is designed for easy and convenient shipping through a consolidated design with simple, accessible lifting points. Megapack can be transported by land and sea. Megapack has six compliant ISO 1161-type lifting points called ISO fittings for effective rigging and to aid transportation and logistics. Megapack,fitted with a protective shipping cover, arrives at the delivery point on a trailer pulled by a truck and can be offloaded by lifting from these six ISO fittings. Depending on site constraints and lifting equipment, additional rigging (such as spreader bars and shackles) may be required. Because of its pre-assembled and pre-tested nature, Megapack is considered a non-divisible entity, which means it cannot and should not be disassembled during any portion of its transportation. Doors should not be opened and parts should not be removed under any circumstance. Megapack is a large, overweight load. In order to prepare for successful delivery, access roads must be capable of supporting loaded delivery vehicles such as cranes and forklifts. The site shall provide and maintain a clear access route from the public right-of-way to the on-site maintenance infrastructure, and from the on-site maintenance infrastructure to the front of each Megapack for delivery, installation, replacement, and removal of Megapack and its components. 7.3.1 Ocean Shipping Guidance Megapack cannot be shipped using standard (ISO-668 40-ft High Cube dry) container types due the height of the overall product. Megapack is capable of being transported on a transient ocean vessel. Tesla's recommendation for ocean transit is via flat rack or a trailer on roll-on/roll-off (ro-ro) vessels. Based on the applicable Incoterms® Rules, should a flat rack or ro-ro vessel option not be available, Tesla can work with customers to determine what specialized equipment will be necessary on a case-by-case basis. 7.4 Storage Considerations Megapacks may be stored for a maximum of 12 months (365 days) from the shipping date without needing to be charged. Charge power must be made available to the system at the end of the storage duration. The following conditions must be met to ensure system integrity during storage: Table 51. Storage Conditions Duration Temperature Range During Storage Maximum Humidity Up to 12 months (365 days) from -30°C to 50°C (-220F to 122°F) Up to 100% relative humidity, delivery condensing Table 52. Storage Clearance Front Back-to-Back Side-to-Side 1060 mm (42 in) 150 mm (6 in) 150 mm (6 in) 7.5 Installation Considerations NOTE: For comprehensive installation guidance, refer to the Megapack 2 XL Design and Installation Manual on the Tesla Partner Portal. 7.5.1 Anchoring Megapacks may be anchored to their foundations using their anchor brackets, which are steel flanges welded to the base of Megapack. Megapack's anchor brackets are to be structurally affixed to a foundation as required based on the type of foundation used. Each anchor bracket supports a total of three anchoring points. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 64 SITE DESIGN CONSIDERATIONS 7.5.2 Foundation Megapacks must be installed on a non-combustible foundation or base, such as concrete pad or steel beams, that is strong enough to support the weight of the equipment and to resist all anchor loads. Proper clearances must be observed. The Megapack unit must be installed on a single planar surface. If using non-concrete pad designs, review with Tesla. 7.5.3 Megapack Clearance The clearances listed in this section are as required by the product. Additional clearances to non-Megapack equipment may be required per local codes and regulations. Equipment clearances must be maintained throughout the operating life of the system. See the Equipment Clearance Requirements on page 66 table below for dimensions. Shaded areas indicate the Battery Service Zone. Figure 30. Equipment Clearance Requirements - Side View O r 0—A Figure 31. Equipment Clearance Requirements - Front View o i 1 �������� t �II�I�I�IIIIIIIIII�I�I�I� Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 65 SITE DESIGN CONSIDERATIONS Figure 32. Equipment Clearance Requirements - Plan View O ; . o Q . 1 1 1 NOTE:All clearances listed must be observed from Megapack to any obstruction, including customer equipment or structures as well as other Tesla-provided components such as the Standard Tesla System Controller Enclosure. Table 53. Equipment Clearance Requirements Callout Type Minimum Maximum Notes 1 Back-to-back 460 mm (18 in) None Measured from the back faces of the Megapacks. clearance recommended for access purposes. 230 mm (9 in) with prior Tesla review. 2 Front clearance 2440 mm (96 in) None Measured from the face of the door(s). Tesla- required clearance for maintenance access. NOTE: Removable bollards may be installed within this area with prior Tesla approval. No permanent obstructions are allowed. 3 Foundation 100 mm (4 in) 305 mm (12 Varies depending on anchor and site design but overhang in) must fall within this range. 4 Drive aisle 1960 mm (77 in) None Measured from foundation. Tesla-required clearance clearance for maintenance access. 5 Vertical 2440 mm (96 in) None Must extend across the Battery Service Zone, as clearance some service equipment extends beyond the roof of the enclosure. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 66 SITE DESIGN CONSIDERATIONS Callout Type Minimum Maximum Notes Megapack may only be installed by a crane, thus actual clearance during installation will be greater. 6 Side-to-side 150 mm (6 in) None Measured from the side faces of each Megapack. clearance 7 Service side 915 mm (36 in) None Measured from the face of each side of the clearance Megapack, except where side-by-side with another Megapack. 8 Battery Service -- -- The Battery Service Zone, shown shaded above, Zone consists of the Front(2), Vertical(5), and Service side (7) clearances. .✓` NOTE:Small inclusions for foundations are allowed as long as the foundation does not infringe on the Foundation overhang(3) and Drive aisle(4) clearances. 7.5.4 Exposures and Fire Clearances The dimensions and requirements as specified below are the product minimums and persist throughout the design, installation, and operating life of the system. Many jurisdictions have guidelines or restrictions about how close potentially combustible objects can be located to battery systems. Designers, owners, and operators are responsible for ensuring that the site meets the requirements of the local jurisdictions. Figure 33. Exposure Clearances - Isometric View/Side View t I I 2 ' 1 O 1 Table 54. Exposure Clearance Requirements Callout Type Minimum Maximum Notes 1 Ordinary 1530 mm (60 in) None Minimum clearance as noted is required on all sides combustibles to ordinary combustible objects including trees, wooden fences, and other combustible structures. 2 Vertical combustible NA NA Do not install Megapack under combustible or or ignitable ignitable objects,at any distance. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 67 SITE DESIGN CONSIDERATIONS Callout Type Minimum Maximum Notes 3 Ignitable liquids 6096 mm (240 None Minimum clearance as noted is required on all sides in) to ignitable liquids sources. i NOTE: • Megapack is not intended to be installed within 3050 mm (120 in) from accessible means of egress and exposures (such as buildings, public ways, and hazards not associated with electrical grid infrastructure as defined by the clearance requirements in the International Fire Code and NFPA 855). • Any installation that requires clearances of less than 3050 mm (120 in) to accessible means of egress or exposures may require a freestanding fire barrier per requirements in the International Fire Code and NFPA 855. 7.6 Remote Connection To warranty and maintain the Megapack System, Tesla requires remote connections for the purposes of: • Data logging for periodic collection of operational data and low-level sensor data from the Megapack System for maintenance and warranty purposes • Diagnostics and dispatch support for monitoring and responding to issues • Firmware and configuration updates for maintaining the Megapack System Unless otherwise specified, the Tesla System Controller requires access to the Tesla servers either via the integrated cellular modem or an unrestricted hardline internet connection provided by the customer over the Customer Network and the Tesla System Controller's LAN 1 Ethernet port. 7.7 Wiring Interfaces Megapack requires power and communications wiring between system components and to the site's main AC panel. The table below summarizes the wiring interfaces needed. All materials are supplied by the contractor. Table 55. System Wiring Interface Summary From To Equipment Wiring Interface Minimum Conduit Equipment Size Megapack Controller or field network Communications cable N/A enclosure DC power conductors (for N/A communication control power or microgrid applications) Grid interconnection AC power conductors (3-phase and N/A ground) Controller AC power supply AC power conductors (2-phase and 25 mm (1 in) ground) Meters Communications cable 25 mm (1 in) Each Megapack requires a 3-wire circuit (3 phases, ground) connection. Conductors enter Megapack via the above-ground wireway, and terminate on the AC bus bars in the Customer Interface Bay. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 68 SITE DESIGN CONSIDERATIONS Megapack is designed with two above-ground wireways through which to route AC cabling to LV transformer termination and communications cabling. The wireways do not require any site trenching construction. Each wireway runs from each side of the Megapack into the AC bus bar area in the Customer Interface Bay. Circuits using wireways must be designed and installed in accordance with local code. Table 56. Wireway Opening Dimensions Enclosure Variant Width Height Channel Width -C variant 410 mm (16'/4 in) 96 mm (3 3/4 in) NA -D variant 502 mm (19 3/4 in) 96 mm (3 3/4 in) 4 channels, 121 mm (4 3/4 in) Figure 34. Megapack Integrated Wireway (-D Enclosure) a14 ` 04, VA 0 r .x r 1. Two four-channel (single-channel in the -C enclosure) wireways, integrated into the Megapack base 2. Wireway openings 3. Roxtec seal in the wireway opening 4. AC power conductors or other cables such as communications cables 5. Two cable trays Dedicate a separate 3-phase circuit for each Megapack. Tesla requires copper or aluminum conductors with a minimum insulation temperature rating of 90°C. Provide an equipment grounding connection for each power circuit. The grounding conductor size depends on local requirements and the Megapack breaker rating. Auxiliary power is not required. Megapack pulls auxiliary power for the control power and thermal management from the local AC, and therefore requires no field work. The Standard Tesla System Controller Enclosure must be powered from a dedicated 120-480 V circuit. Its internal transformer adjusts voltage as required. Communications wiring for the Megapack System requires special attention to network cabling. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 69 OPERATION, MAINTENANCE,AND SERVICE 8 Operation, Maintenance, and Service This section discusses responsibilities for system owners and Service Providers while the Megapack System is in an operational state and throughout the productive lifetime of the system. Responsibilities of system owners include: • Designating site operators as needed • Monitoring and operating the site as required (Testa System Controller Specifications on page 31) • Providing for site access for Service Providers (Maintaining Access, Routes, and Zones on page 70) • Providing a safe work environment for Service Providers (Safe Work Environment Requirements on page 71) • If requested by a local authority, providing total material quantities as indicated in the Application Note: Considerations for Hazardous Materials Business Plans (HMBP) • Arranging for decommissioning (Decommissioning on page 74) A Service Provider is defined as one of the following: • Tesla Energy Service • Certified Service Provider: o System owner certified by Tesla o Third party certified by Tesla Responsibilities of Service Providers include providing preventative and corrective maintenance to the Megapack System (Maintenance and Service Considerations on page 71). CAUTION: If you are making changes to the site that may affect its design, you must ensure that the site `= continues to abide by all requirements in the Megapack 2 XL Design and Installation Manual on the Tesla Partner Portal. :� NOTE:Tesla's standard service offering does not include maintenance scope beyond the Megapack System. 8.1 Maintaining Access, Routes, and Zones To service Megapack, Service Providers will require frequent access to the site and to the Megapacks themselves, over the full duration of the project's life. Routes and zones at the site must allow for year-round access, including for support of all vehicles as designated by the site's engineer of record. Refer to Routes and Zones on page 57 for more information. 8.1.1 Megapack Access • The Service Provider must be allowed to have the ability to remove any locks preventing access. • Clearance must be maintained such that the Battery Service Zone remains free of obstruction (including, for example, snow, sand, and blown debris) during system operation to avoid restricting airflow through the ventilation openings. Restricted airflow can affect system performance. 8.1.2 Lift Plan The original lift plan used to install Megapack at commissioning must be provided to Service Providers. This provides background information that can be used to plan for Megapack removal or replacement during the operations phase. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 70 OPERATION, MAINTENANCE,AND SERVICE 8.2 Safe Work Environment Requirements Over the operating life of your Megapack System, you may need to isolate and de-energize the Megapack for various reasons: • For Tesla to perform service on the Megapack System • For providers other than Tesla to perform work upstream or around the Megapack • To put the Megapack in an idle state by de-energizing the equipment due to an upstream fault or other reason If a Service Provider needs to perform maintenance, you will need to provide both access to the Megapack System and a safe work environment. Providing a safe work environment will typically require the Megapack to be isolated and de-energized. Depending on the scope of service and the site design, the Megapack will either need to be de-energized at the Megapack AC circuit breaker or at an upstream AC disconnect. Provided that the Megapack does not exceed the maximum allowable arc flash incident energy as specified below, most Megapack service can be completed safely by de-energizing at the Megapack AC circuit breaker. If the Megapack exceeds the maximum allowable arc flash incident energy, all Megapack service will require upstream AC disconnect. Table 57. Maximum Allowable Arc Flash Incident Energy All Regions 14 cal/cm2 8.3 Maintenance and Service Considerations 8.3.1 On-Site Maintenance Infrastructure If Tesla Energy Service is the service provider, on-site maintenance infrastructure is required. On-site maintenance infrastructure (OMI) is essential to the rapid and effective maintenance of Megapack sites. The table below summarizes the minimum design requirements for on-site maintenance infrastructure. Most on-site maintenance infrastructure is contained within the Service Staging Zone. � , _ NOTE:Regional differences may apply. Australia and New Zealand have distinct requirements that must be i followed. Contact Tesla for more information. Table 58. On-Site Maintenance Infrastructure Level Applicability Minimum On-Site Maintenance Infrastructure Minimum Critical Services Requirements Requirements 1 Projects with 1 or more Service Staging Zone Portable Restroom Megapacks require Level 1 or higher Parking Zone • Cellular service • Electricity 2 Projects with 15 or One 20-foot storage container Portable Restroom more Megapacks require Level 2 or • Service Staging Zone • Cellular service higher Parking Zone Electricity • Storage Clearance Area Waste disposal Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 71 OPERATION, MAINTENANCE,AND SERVICE Level Applicability Minimum On-Site Maintenance Infrastructure Minimum Critical Services Requirements Requirements 3 Projects with 36 or One 40-foot storage container Portable Restroom more Megapacks require Level 3 or • Service Staging Zone Cellular service higher Parking Zone Electricity • Storage Clearance Area Waste disposal 4 Projects with 75 or Two 40-foot storage containers Portable Restroom more Megapacks require Level 4 or • Service Staging Zone • Cellular service higher Parking Zone Electricity • Storage Clearance Area Waste disposal 5 Projects with 146 or Three 40-foot storage containers Portable Restroom more Megapacks require Level 5 or • Service Staging Zone • Cellular service higher Parking Zone Electricity • Storage Clearance Area Waste disposal 6 Projects with 261 or Four 40-foot storage containers Restroom more Megapacks require Level 6 or One 60 x 12-foot office trailer Electricity higher Service Staging Zone Internet and cellular service • Parking Zone Waste disposal • Storage Clearance Area Water 7 Projects with 376 or Five 40-foot storage containers Restroom more Megapacks require Level 7 One 60 x 12-foot office trailer Electricity • Service Staging Zone Internet and cellular service • Parking Zone Waste disposal • Storage Clearance Area Water 8 Projects with 501 or Six 40-foot storage containers Restroom more Megapacks require Level 8 One 60 x 24-foot double-wide office Electricity trailer Internet and cellular service • Service Staging Zone Waste disposal • Parking Zone Water • Storage Clearance Area 9 Projects with 651 or Eight 40-foot storage containers Restroom more Megapacks require Level 9 One 60 x 24-foot double-wide office Electricity trailer Internet and cellular service • Service Staging Zone Waste disposal • Parking Zone Water • Storage Clearance Area Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 72 OPERATION, MAINTENANCE,AND SERVICE Level Applicability Minimum On-Site Maintenance Infrastructure Minimum Critical Services Requirements Requirements 10 Projects with 800 or Ten 40-foot storage containers Restroom more Megapacks require Level 10 One 60 x 36-foot triple-wide office Electricity trailer Internet and cellular service • Service Staging Zone Waste disposal • Parking Zone Water • Storage Clearance Area 11 Projects with 1000 or Contact Tesla for infrastructure Contact Tesla for more Megapacks requirements infrastructure requirements require Level 11 i NOTE: • This table provides general guidance on the minimum requirements for the preliminary development of a site • Project-specific requirements may vary based on site-specific factors as detailed in the Application Note: On-Site Maintenance Infrastructure Requirements on the Tesla Partner Portal • The applicable category of maintenance and project-specific requirements are defined in the contract • Always follow all local codes and regulations 8.3.2 Maintaining the Perimeter • Fencing may be locked and posted with a placard stating "Authorized Users Only" or similar. Refer to local code for fencing placard requirements. • Any fencing must follow clearance requirements. 8.3.3 Maintaining the Enclosure • Enclosures must be regularly visually inspected for any areas of damage, which shall be reported to a Service Provider. • Enclosures must be regularly visually inspected to ensure they remain free of debris or rodents. 8.3.4 Environmental Considerations Each Megapack contains coolant and refrigerant in its thermal system (Thermal System on page 9). Depending on the number of Megapacks installed on a site, storage, use and handling of these substances may require reporting, hazard management plans, or containment procedures as required by local codes and regulations. All local codes and regulations related to this matter must be followed. Refer to the Megapack 2 XL Design and Installation Manual on the Tesla Partner Portal for more information. 8.3.5 Energy Meters The Tesla System Controller uses various meter inputs for different control functions. The meters are expected to be installed during the installation phase of the project and are the operator's responsibility to maintain. For additional information and for a list of supported meters, refer to the Megapack 2 XL Design and Installation Manual on the Tesla Partner Portal. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 73 OPERATION, MAINTENANCE,AND SERVICE wr s NOTE:When communication to any of the meters is lost during on-grid normal operation, the system ceases to operate until communication is resumed. If communication is lost, the values reported are the last values read from the meter until communication is resumed. 8.4 Decommissioning and Disposal 8.4.1 Safety Refer to the Industrial Lithium-Ion Battery Emergency Response Guide (ERG) on the Tesla First Responders Information Page at https://www.tesla.com/firstresponders for detailed hazard information specific to Megapack's lithium-ion batteries. The Transportation section of the ERG provides guidance and cites example regulations for shipment of dangerous goods. All logistics and transportation companies in the supply chain are responsible for knowing and following all applicable regulations pertaining to the storage, handling, and transportation of dangerous goods. The ERG is periodically updated. Download the latest revision of the ERG from https://www.tesla.com/ firstresponders. Tesla recommends that a physical copy of the ERG is transported along with Megapack, and subsequently remains on site and accessible at all times, for the life of the product. Safety Data Sheets (SDS) are available for materials in Tesla Energy products. Refer to the Tesla Partner Portal for more information. 8.4.2 Decommissioning Prior to shutting down and decommissioning Megapack, Megapack must be discharged accordingly as required by applicable regulations. Megapack contains recyclable materials. Tesla strongly encourages recycling and recommends that when a Megapack must be decommissioned, it be returned to a Tesla facility for disassembly and further processing or to an alternate recycling facility. Megapacks should be disposed of or recycled in accordance with local, state, and federal regulations. Note that regulations regarding disposal of batteries vary by jurisdiction. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 74 APPENDIX A:GLOSSARY Appendix A: Glossary Only selected terms appear in this glossary. For a complete glossary, refer to the Tesla Energy Glossary on the Tesla Partner Portal. AC output terminals—The point on the AC bus bars at which the external AC connections to the Megapack are terminated. Megapack's apparent power capability (kVA), real power capability (kW), and energy capacity (kWh) are specified at this point. apparent power capability— Rated AC apparent power capability of Megapack in kVA, factory-configurable by Tesla. Displayed as Maximum Continuous Power on the product nameplate. battery cell—The smallest non-divisible energy component of the Megapack, assembled into a battery module in series and parallel arrays. battery inverter losses— Power consumed by inverter switching losses and quiescent draw from the battery module's inverter. battery module—A field-replaceable unit that integrates battery cells, fusing, and battery management system functions. The battery module interfaces are output electrical connections, thermal interface, and communication connections. beginning of life—The start date of the Megapack System warranty. Customer Network—The network that provides the customer's interface to the Tesla system. This network is accessed via the Tesla System Controller's LAN 1 port, and is often the broader local SCADA network for the site. energy capacity— Rated AC energy capacity of Megapack in kWh. Displayed as Nominal Battery Energy (AC) on the product nameplate. frequency ride-through(FRT)—The capability of grid-connected devices to stay connected over short periods of time when local frequency differs from the grid's nominal frequency. Megapack Systems support both high-frequency ride-through (HFRT) and low-frequency ride-through (LFRT) settings. fully operational—The operating condition in which the Megapack is capable of discharging or charging at real power capability. Heat Mode—A Megapack control mode that is used to precondition the battery cell temperature in order to maintain the real power capability and/or to maximize the discharge energy capacity of Megapack at low ambient temperatures. inverter— Bi-directional power conversion system that couples each Megapack with the power grid (AC power). Megapack— Modular AC-coupled energy storage system, including an enclosure, battery modules, inverters, and a thermal system. Megapack auxiliary energy— Energy consumed to support the Megapack internal controls and thermal management loads over the course of 24 hours. This energy may be consumed from the grid and/or battery modules. Megapack auxiliary power— Power drawn to support the Megapack internal controls and thermal management loads, not including battery inverter losses. This power may be drawn from the grid and/or battery modules. Megapack maximum auxiliary power— Maximum power that can be drawn to support Megapack internal controls and thermal management loads, not including battery inverter losses. This power may be drawn from the grid and/or battery modules. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 75 APPENDIX A:GLOSSARY Megapack System—A Tesla System that consists of one or more Megapacks and the Tesla System Controller. Megapack site—The Megapack System plus additional equipment required by the site and supplied by the customer. nameplate label— Label attached to a Megapack that indicates its electrical and mechanical specifications. nominal—Standard value, as used for example in nominal voltage or nominal frequency, to which the Megapack is designed to operate under normal conditions. overvoltage(OV)withstand—The capability of Megapack to stay connected over short periods of time despite local voltage exceeding the grid's nominal voltage. peak apparent power capability— Rated peak AC apparent power capability of Megapack in kVA. Only available if Megapack is configured with Peak Power Mode by Tesla. peak real power capability— Rated peak AC real power capability of Megapack in kW. Only available if Megapack is configured with Peak Power Mode by Tesla. ratings— Energy capacity or power capability that the Megapack is designed to meet given certain nominal conditions. Nominal ratings are displayed on the product nameplate. real power capability— Rated AC real power capability of Megapack in kW. Throughout Megapack documentation, the term real power may be used synonymously with the term active power. round-trip efficiency(RTE,%)—The quotient of total energy discharged over the total energy charged. The energy charged and discharged are measured during a cycle of 0%-100%-0% SOE, where the Megapack is charged from 0% to 100% at real power capability,then discharged to 0% at real power capability. The round-trip AC-AC energy efficiency shall be measured at the AC output terminals of the Megapack and shall include Megapack auxiliary energy and energy resulting from battery inverter losses, but exclude site auxiliary energy expended during the cycle as defined above. site auxiliary energy— Energy consumed to support site devices other than the Megapack auxiliary energy. This energy may be consumed from the grid and/or battery modules. site auxiliary power— Power drawn to support site devices other than the Megapack auxiliary power. This power may be drawn from the grid and/or battery modules. Standard Test Conditions(STC) — Defined as the Megapack maintained at 25°C and 1 atmosphere (101.3 kPa) of pressure. state of energy(SOE) —The amount of energy left in the Megapack or Megapack System measured as a percentage of Full Battery Energy. supervisory control and data acquisition(SCADA)—Additional hardware and software that may be required to control and monitor a Megapack site. TAMBCOLD—The ambient temperature for cold weather performance is defined as the Megapack soaked at-20°C. This temperature definition is used to define performance in a nominally cold temperature climate, and does not define the operating limitation or temperature rating of the Megapack. TAMBHOT—The ambient temperature for hot weather performance is defined as the Megapack soaked at 45°C. This temperature definition is used to define performance in a nominally hot temperature climate, and does not define the operating limitation or temperature rating of the Megapack. Testa Network—The Tesla-controlled network that includes the individual battery units (Megapacks) of the battery system. This network is accessed via the Tesla System Controller's LAN 2 port, and often includes additional components such as field network devices. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 76 APPENDIX A:GLOSSARY Tesla System—One or more Tesla Energy products and the Tesla System Controller. Tesla System Controller—The single point of interface with which to monitor and control the entire Tesla System and approved third-party generation sources. There are two physical variations of the Tesla System Controller: The Standard Tesla System Controller (deployed in the Standard Tesla System Controller Enclosure), and the Large Tesla System Controller. voltage ride-through(VRT) —The capability of grid-connected devices to stay connected over short periods of time when local voltage differs from the grid's nominal voltage. Megapack Systems support both high-voltage ride- through (HVRT) and low-voltage ride-through (LVRT) settings. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 77 REVISION HISTORY Revision History Revision Date Details 2.0 February Changed unit from kW to WA for clarity (Megapack Maximum Auxiliary Power on 25, 2026 page 16) • Updated battery inverter losses for TC2H and TC4H (Battery Inverter Losses on page 21) 1.9.1 November Clarified that the values for certain configurations apply for Grid-Following mode 19, 2025 only (Battery Inverter Losses on page 21) 1.9 November Added configurations to auxiliary energy during Heat Mode (Auxiliary Energy during 13, 2025 Heat Mode on page 20) • Added peak average power (Megapack Auxiliary Energy over 24 Hours on page 17) • Added new configurations for auxiliary energy, maximum auxiliary power, round-trip efficiency, battery inverter losses, and noise specification (Megapack Auxiliary Energy over 24 Hours on page 17, Round-Trip Efficiency on page 14, Megapack Maximum Auxiliary Power on page 16, Battery Inverter Losses on page 21, Noise Specification and Guidance on page 29) • Updated "following one full cycle"to "post-cycle" to account for a charge to 10% SOE after the cycle to ensure the system is not left at 0% at end of discharge (Megapack Auxiliary Energy over 24 Hours on page 17) • Improved ratings for C012 cell option (Power and Energy on page 13) • Added information about non-standard configurations, such as the 8-Hour non- standard configuration (Power and Energy on page 13) • Removed Peak Power Mode as an offering • Provided information about manufacturing options, including additional thermal system manufacturing option information (Product Configurations on page 6, Thermal Specifications on page 27) • Updated state of energy for accuracy and clarity in the table in Megapack Maximum Auxiliary Power, Auxiliary Energy, and Battery Inverter Losses on page 16 • Provided a summary of supported control modes (Grid-Forming/Grid-Following) per Archetype (Utility Archetypes on page 31) • Clarified that system-level monitoring and control is available over both Modbus and DNP3 (Telemetry on page 46) • Added reaction time; added minimum short circuit ratio condition required to meet the rise time specification (Rise Time and Reaction Time on page 51) 1.8 May 29, Restructured and clarified auxiliary power content (Megapack Maximum Auxiliary 2025 Power, Auxiliary Energy, and Battery Inverter Losses on page 16) • Separated battery inverter losses from auxiliary energy (Battery Inverter Losses on page 21) • Clarified preconditioning applicability to Heat Mode and that this specification excludes battery inverter losses (Auxiliary Energy during Heat Mode on page 20) Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 78 REVISION HISTORY Revision Date Details • Updated the maximum allowable arc flash incident energy from 8 to 14 cal/cm2 for all regions (Safe Work Environment Requirements on page 71) • Provided additional cell option details (Product Options on page 6) • Added ride-through alert details (Telemetry on page 46) • Clarified ride-through behavior and included applicability for IEEE 2800-2022 (Ride-Through and Anti-Islanding Features on page 22) • Updated reconnection delay timer setting ranges (Anti-Islanding Features on page 26) • Updated Tesla System Controller on page 10 and Megapack System Components on page 4 to include additional Large Tesla System Controller • Added note on Megapack-level alerting timestamp accuracy (Telemetry on page 46) 1.7 February 12, Introduced the C011 cell option (Battery Modules on page 8, Power and Energy on 2025 page 13, Round-Trip Efficiency on page 14, Megapack Maximum Auxiliary Power, Auxiliary Energy, and Battery Inverter Losses on page 16) • Introduced fan type options (Product Options on page 6) • Modified the maximum audible noise specification (Noise Specification and Guidance on page 29) • Updated auxiliary consumption specifications for the C010 cell option (Megapack Auxiliary Energy over 24 Hours on page 17) • Updated round-trip efficiency specifications for the C010 cell option (Round-Trip Efficiency on page 14) • Clarified that the step response example assumes that Closed Loop Control is enabled (Step Response Example on page 51) 1.6 December Provided product configuration, option, and variant descriptions (Product 2, 2024 Configurations on page 6) • Introduced the C012 cell option (Battery Modules on page 8, Power and Energy on page 13, Round-Trip Efficiency on page 14, Megapack Maximum Auxiliary Power, Auxiliary Energy, and Battery Inverter Losses on page 16) • Clarified thermal capacity configuration descriptions (Thermal Specifications on page 27) 1.5 October 23, Provided electrical topology diagrams for each Archetype (Archetype Topologies on 2024 page 35) • Provided service side clearance (superseding door swing clearance) and updated diagrams with Battery Service Zone highlight (Megapack Clearance on page 65) • Clarified state of energy and removed the obsolete term state of charge (Appendix A: Glossary on page 75) • Updated safety features section and improved context (Hazard Mitigation Features on page 11) • Changed control element name from Redundancy to Automatic Failover (On-Grid Control Elements on page 42) • Added detail about steady state error in overbuilt or longer-duration systems (Note on page 53) Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 79 REVISION HISTORY Revision Date Details 1.4 July 24, Provided clarification on power transition states, rise time, and step response 2024 behavior (Response Time on page 50) • Clarified introductory definitions of C&I Archetypes for improved understanding and consistency (C&I Archetypes on page 33) • Updated telemetry to include hardware-capable signals (Telemetry on page 46) • Updated runaway gas igniters term to Sparker System (Hazard Mitigation Features on page 11) 1.3 May 31, Added Utility Hybrid Archetype (Archetypes on page 31) 2024 • Added site-level monitoring and control over DNP3 (Testa System Controller Specifications on page 31) • Added C&I Archetypes (Archetypes on page 31) • Updated islanding and microgrid controls (Islanding Control Elements on page 44, Microgrid Control Elements on page 45) • Added a topic describing routes and zones to aggregate and better clarify site civil design requirements and considerations (Routes and Zones on page 57) • Clarified that THD is at real power capability (Interconnection Data on page 22) • Clarified that each Megapack unit must be installed on a single planar surface (original language: "Equipment must all be installed on a single level surface.") (Foundation on page 65) 1.2 March 6, Clarified previous updates to on-site maintenance infrastructure Levels 1-5 (On-Site 2024 Maintenance Infrastructure on page 71) • Updated (decreased) coolant volume (Thermal Specifications on page 27) 1.1 January 30, Introduced standard Archetypes to replace the previous concept of Templates 2024 (Archetypes on page 31) • Added the Co-Located Archetype (Archetypes on page 31) • Updated on-site maintenance infrastructure levels (On-Site Maintenance Infrastructure on page 71) • Clarified supply fault current rating (Interconnection Data on page 22) • Corrected clearance legends (Megapack Clearance on page 65) 1.0 November Initial revision, based on Megapack 2 XL Specification v2.5 and enhanced with Megapack- 8, 2023 System-wide information. Megapack 2 XL System Specification CONFIDENTIAL INFORMATION-SHARED UNDER NDA ONLY 80 n CONFIDENTIAL INFORMATION— SHARED UNDER NDA ONLY Megapack 2 XL System Specification - Revision 2.0 - Published February 25, 2026