# Big Rock Solar Farm

CAISO Batteries · https://askthegrid.com/assets/facilities/big-rock-solar-farm

Big Rock Solar Farm is a battery energy storage facility with 200 MW of EIA-reported operating capacity and 400 MWh of reported energy capacity in Imperial County, California, registered as EIA Plant ID 64636. Gore Street Energy Storage Fund plc is the current owner; Big Rock ESS Assets, LLC is the registered plant entity or operator. The facility uses LS Energy Solutions AiON-ESS Energy Series and AiON-SIS equipment; public project records list 137 battery containers.

## Key facts

- Technology: Batteries
- Power capacity: 200 MW
- Energy capacity: 400 MWh
- Operating status: operating

## Grid and market context

- ISO/RTO: CAISO
- Balancing authority: CISO
- Substation: Imperial Valley Substation
- Point of interconnection: Imperial Valley Substation
- Transmission owner: Imperial Irrigation District (IID)
- Interconnection voltage: 230 kV

## Source-backed facts

- Owner logo domain: gsenergystoragefund.com — Sustainability and Impact is part of our DNA | Gore Street Energy Storage Fund plc · confidence: medium
- Owner logo domain: gsenergystoragefund.com — California Calling as US Expansion Continues - Gore Street Capital · confidence: medium
- Identifiers: [{"value":"64636","system":"EIA plant ID"},{"value":"92JTB","system":"EIA generator ID"},{"value":"CAISO","system":"ISO/RTO"},{"value":"CISO","system":"EIA balancing authority"},{"value":"ER24-2183-000","system":"FERC docket"},{"value":"EC24-95-000","system":"FERC docket"}] — Federal Register :: Big Rock ESS Assets LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for Blanket Section 204 Authorization · confidence: medium
- Identifiers: [{"value":"64636","system":"EIA plant ID"},{"value":"92JTB","system":"EIA generator ID"},{"value":"CAISO","system":"ISO/RTO"},{"value":"CISO","system":"EIA balancing authority"},{"value":"ER24-2183-000","system":"FERC docket"},{"value":"EC24-95-000","system":"FERC docket"}] — Combined Filings · confidence: medium
- Description: Big Rock Solar Farm is an operational battery energy-storage plant in Imperial County, California, with 200 MW of nameplate capacity and one generating unit. EIA records identify the unit as generator 92JTB, using batteries with a BA prime mover, and report first operation on May 1, 2025. The project is part of Gore Street Energy Storage Fund’s 200 MW/400 MWh Big Rock asset and provides storage services to CAISO. — LS Energy Solutions in Commercial Operations for CAISO at Big Rock 200 MW/400 MWh Energy Storage Site | LS Energy Solutions · confidence: high
- Parties: [{"relationship":"Owner / asset acquirer","name":"Gore Street Energy Storage Fund plc","official_url":"https://www.gsenergystoragefund.com/"},{"relationship":"Operator / registered applicant","name":"Big Rock ESS Assets, LLC","official_url":null},{"relationship":"Investment adviser / manager","name":"Gore Street Capital Ltd.","official_url":"https://www.gorestreetcap.com/"},{"relationship":"Developer and administrative/development services","name":"Avantus","official_url":"https://avantus.com/"},{"relationship":"Battery-system supplier and operations-services provider","name":"LS Energy Solutions","official_url":"https://www.ls-es.com/"},{"relationship":"ISO/RTO market operator","name":"California Independent System Operator","official_url":"https://www.caiso.com/"}] — Avantus Completes Sale of 200-Megawatt Energy Storage Project to Gore Street Energy Fund · confidence: medium
- Parties: [{"relationship":"Owner / asset acquirer","name":"Gore Street Energy Storage Fund plc","official_url":"https://www.gsenergystoragefund.com/"},{"relationship":"Operator / registered applicant","name":"Big Rock ESS Assets, LLC","official_url":null},{"relationship":"Investment adviser / manager","name":"Gore Street Capital Ltd.","official_url":"https://www.gorestreetcap.com/"},{"relationship":"Developer and administrative/development services","name":"Avantus","official_url":"https://avantus.com/"},{"relationship":"Battery-system supplier and operations-services provider","name":"LS Energy Solutions","official_url":"https://www.ls-es.com/"},{"relationship":"ISO/RTO market operator","name":"California Independent System Operator","official_url":"https://www.caiso.com/"}] — LS Energy Solutions in Commercial Operations for CAISO at Big Rock 200 MW/400 MWh Energy Storage Site | LS Energy Solutions · confidence: medium
- Parties: [{"relationship":"Owner / asset acquirer","name":"Gore Street Energy Storage Fund plc","official_url":"https://www.gsenergystoragefund.com/"},{"relationship":"Operator / registered applicant","name":"Big Rock ESS Assets, LLC","official_url":null},{"relationship":"Investment adviser / manager","name":"Gore Street Capital Ltd.","official_url":"https://www.gorestreetcap.com/"},{"relationship":"Developer and administrative/development services","name":"Avantus","official_url":"https://avantus.com/"},{"relationship":"Battery-system supplier and operations-services provider","name":"LS Energy Solutions","official_url":"https://www.ls-es.com/"},{"relationship":"ISO/RTO market operator","name":"California Independent System Operator","official_url":"https://www.caiso.com/"}] — Federal Register :: Big Rock ESS Assets LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for Blanket Section 204 Authorization · confidence: medium
- Identifiers.4: {"value":"ER24-2183-000","system":"FERC docket"} — Federal Register :: Big Rock ESS Assets LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for Blanket Section 204 Authorization · confidence: medium
- Identifiers.5: {"value":"EC24-95-000","system":"FERC docket"} — Combined Filings · confidence: medium
- Parties.0: {"relationship":"Owner / asset acquirer","name":"Gore Street Energy Storage Fund plc","official_url":"https://www.gsenergystoragefund.com/"} — Avantus Completes Sale of 200-Megawatt Energy Storage Project to Gore Street Energy Fund · confidence: medium
- Parties.1: {"relationship":"Operator / registered applicant","name":"Big Rock ESS Assets, LLC","official_url":null} — Federal Register :: Big Rock ESS Assets LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for Blanket Section 204 Authorization · confidence: high
- Parties.2: {"relationship":"Investment adviser / manager","name":"Gore Street Capital Ltd.","official_url":"https://www.gorestreetcap.com/"} — Avantus Completes Sale of 200-Megawatt Energy Storage Project to Gore Street Energy Fund · confidence: high
- Parties.3: {"relationship":"Developer and administrative/development services","name":"Avantus","official_url":"https://avantus.com/"} — LS Energy Solutions and Gore Street Energy Storage Fund Partner on 200 MW/400 MWh Energy Storage Project | LS Energy Solutions · confidence: high
- Parties.4: {"relationship":"Battery-system supplier and operations-services provider","name":"LS Energy Solutions","official_url":"https://www.ls-es.com/"} — LS Energy Solutions in Commercial Operations for CAISO at Big Rock 200 MW/400 MWh Energy Storage Site | LS Energy Solutions · confidence: high
- Parties.5: {"relationship":"ISO/RTO market operator","name":"California Independent System Operator","official_url":"https://www.caiso.com/"} — LS Energy Solutions and Gore Street Energy Storage Fund Partner on 200 MW/400 MWh Energy Storage Project | LS Energy Solutions · confidence: high
- Interconnection: IID Fern Substation; alternatives identified as SDG&E Imperial Valley Substation, Drew Switchyard, or Imperial Solar Energy Center West Substation — Source · confidence: medium
- Unit configuration: One battery-storage generating unit (EIA generator 92JTB), using batteries with a BA prime mover; 200 MW nameplate. The site uses lithium-ion battery systems, including 137 LS-ES AiON-ESS containers. — Source · confidence: medium
- Duration hours: 2 — Source · confidence: medium
- Power mw: 200 — Source · confidence: high
- Energy mwh: 400 — Source · confidence: high
- Construction scope: Operational 200 MW / 400 MWh CAISO battery energy-storage site supplied by LS Energy Solutions, comprising 137 AiON-ESS containers. The project source also describes tier-1 lithium-ion batteries and over 1,300 modular 140 kVA AiON-SIS string inverters; each AiON-ESS unit is rated at 1.5 MW and 3.5 MWh. — LS Energy Solutions and Gore Street Energy Storage Fund Partner on 200 MW/400 MWh Energy Storage Project | LS Energy Solutions · confidence: medium
- Product url: https://www.ls-es.com/ls-energy-solutions-introduces-its-next-generation-all-in-one-energy-storage-system-the-aion-ess — LS Energy Solutions Introduces Its Next-Generation All-in-One Energy Storage System, the AiON-ESS | LS Energy Solutions · confidence: high
- Equipment models: [{"manufacturer_domain":"ls-es.com","product_url":"https://www.ls-es.com/ls-energy-solutions-introduces-its-next-generation-all-in-one-energy-storage-system-the-aion-ess","count":137,"unit_mw":1.5,"name":"AiON-ESS Energy Series"},{"manufacturer_domain":"ls-es.com","product_url":"https://www.ls-es.com/ls-energy-solutions-introduces-fourth-generation-string-inverter-system-the-aion-sis/","count":null,"unit_mw":null,"name":"AiON-SIS string inverter"}] — LS Energy Solutions and Gore Street Energy Storage Fund Partner on 200 MW/400 MWh Energy Storage Project | LS Energy Solutions · confidence: medium
- Product family: AiON-ESS Energy Series and AiON-SIS — LS Energy Solutions and Gore Street Energy Storage Fund Partner on 200 MW/400 MWh Energy Storage Project | LS Energy Solutions · confidence: high
- Equipment models.0: {"manufacturer_domain":"ls-es.com","product_url":"https://www.ls-es.com/ls-energy-solutions-introduces-its-next-generation-all-in-one-energy-storage-system-the-aion-ess","count":137,"unit_mw":1.5,"name":"AiON-ESS Energy Series"} — LS Energy Solutions and Gore Street Energy Storage Fund Partner on 200 MW/400 MWh Energy Storage Project | LS Energy Solutions · confidence: high
- Equipment models.1: {"manufacturer_domain":"ls-es.com","product_url":"https://www.ls-es.com/ls-energy-solutions-introduces-fourth-generation-string-inverter-system-the-aion-sis/","count":null,"unit_mw":null,"name":"AiON-SIS string inverter"} — LS Energy Solutions and Gore Street Energy Storage Fund Partner on 200 MW/400 MWh Energy Storage Project | LS Energy Solutions · confidence: medium
- Description: Big Rock Solar Farm is an operational 200 MW battery-energy-storage facility in Imperial County, California, with one EIA generating unit and a two-hour, 400 MWh configuration. EIA identifies the operator as Big Rock ESS Assets, LLC, while Gore Street Energy Storage Fund plc owns the project through that subsidiary. Gore Street acquired the project from Avantus in February 2023, with Avantus continuing development and construction support. The facility was energised in January 2025 and entered commercial operation for CAISO on September 4, 2025, providing resource-adequacy and ancillary services. — First Citizens Provides $60 Million Credit Facility for 200-Megawatt Battery Storage Project in California - Oct 24, 2023 · confidence: high
- Description: Big Rock Solar Farm is an operational 200 MW battery-energy-storage facility in Imperial County, California, with one EIA generating unit and a two-hour, 400 MWh configuration. EIA identifies the operator as Big Rock ESS Assets, LLC, while Gore Street Energy Storage Fund plc owns the project through that subsidiary. Gore Street acquired the project from Avantus in February 2023, with Avantus continuing development and construction support. The facility was energised in January 2025 and entered commercial operation for CAISO on September 4, 2025, providing resource-adequacy and ancillary services. — LS Energy Solutions in Commercial Operations for CAISO at Big Rock 200 MW/400 MWh Energy Storage Site | LS Energy Solutions · confidence: high
- Quality notes: ["The approximately $110 million figure is disclosed as project acquisition costs, including capex incurred around closing, development fees, and milestone payments; it is not separately identified as a pure cash sale price.","The January 21, 2025 energisation announcement, the EIA first-unit-online date of May 1, 2025, and the September 4, 2025 commercial-operation announcement represent different project milestones and should not be treated as interchangeable.","No expansion, retirement, or repowering is identified for the 200 MW/400 MWh configuration in the cited project history."] — Gore Street Energy Storage Fund plc | Improved GB Revenue and Successful Energisation of Big Rock (200 MW/400 MWh US Asset) · confidence: medium
- Commercial parties.0: {"relationship":"Owner / asset acquirer","name":"Gore Street Energy Storage Fund plc","detail":"Acquired Big Rock from Avantus in February 2023 and owns the project through Big Rock ESS Assets, LLC.","official_url":"https://www.gsenergystoragefund.com/"} — First Citizens Provides $60 Million Credit Facility for 200-Megawatt Battery Storage Project in California - Oct 24, 2023 · confidence: high
- Commercial parties.2: {"relationship":"Investment adviser / manager","name":"Gore Street Capital Ltd.","detail":"Investment manager for Gore Street Energy Storage Fund plc and responsible for the fund’s project-level investment and operating strategy.","official_url":"https://www.gorestreetcap.com/"} — Gore Street Energy Storage Fund plc | 200 MW acquisition in California · confidence: high
- Commercial parties.3: {"relationship":"Seller / developer","name":"Avantus","detail":"Sold Big Rock to Gore Street in February 2023 and continued to oversee development and construction services after the acquisition.","official_url":"https://avantus.com/"} — Gore Street Energy Storage Fund plc | 200 MW acquisition in California · confidence: high
- Commercial parties.4: {"relationship":"Battery-system supplier and commissioning-services provider","name":"LS Energy Solutions","detail":"Supplied 137 AiON-ESS containers and was to provide commissioning support, warranty, maintenance, capacity-maintenance, monitoring, and operational services.","official_url":"https://www.ls-es.com/"} — LS Energy Solutions and Gore Street Energy Storage Fund Partner on 200 MW/400 MWh Energy Storage Project | LS Energy Solutions · confidence: high
- Commercial parties.5: {"relationship":"Project-finance lender / lead agent","name":"First Citizens Bank","detail":"Served as lead agent on the $60 million October 2023 credit facility supporting remaining development and portfolio liquidity.","official_url":"https://www.firstcitizens.com/"} — First Citizens Provides $60 Million Credit Facility for 200-Megawatt Battery Storage Project in California - Oct 24, 2023 · confidence: high
- Commercial parties.7: {"relationship":"ISO/RTO market operator","name":"California Independent System Operator","detail":"Big Rock is connected to and provides resource-adequacy and ancillary services in the CAISO market.","official_url":"https://www.caiso.com/"} — Gore Street Energy Storage Fund plc | 200 MW acquisition in California · confidence: high
- Commercial parties.7: {"relationship":"ISO/RTO market operator","name":"California Independent System Operator","detail":"Big Rock is connected to and provides resource-adequacy and ancillary services in the CAISO market.","official_url":"https://www.caiso.com/"} — LS Energy Solutions in Commercial Operations for CAISO at Big Rock 200 MW/400 MWh Energy Storage Site | LS Energy Solutions · confidence: high
- Quality notes.0: The approximately $110 million figure is disclosed as project acquisition costs, including capex incurred around closing, development fees, and milestone payments; it is not separately identified as a pure cash sale price. — Gore Street Energy Storage Fund plc | 200 MW acquisition in California · confidence: high
- Quality notes.1: The January 21, 2025 energisation announcement, the EIA first-unit-online date of May 1, 2025, and the September 4, 2025 commercial-operation announcement represent different project milestones and should not be treated as interchangeable. — Gore Street Energy Storage Fund plc | Improved GB Revenue and Successful Energisation of Big Rock (200 MW/400 MWh US Asset) · confidence: high
- Quality notes.1: The January 21, 2025 energisation announcement, the EIA first-unit-online date of May 1, 2025, and the September 4, 2025 commercial-operation announcement represent different project milestones and should not be treated as interchangeable. — LS Energy Solutions in Commercial Operations for CAISO at Big Rock 200 MW/400 MWh Energy Storage Site | LS Energy Solutions · confidence: high
- Quality notes.2: No expansion, retirement, or repowering is identified for the 200 MW/400 MWh configuration in the cited project history. — Gore Street Energy Storage Fund plc | 200 MW acquisition in California · confidence: medium
- Quality notes.2: No expansion, retirement, or repowering is identified for the 200 MW/400 MWh configuration in the cited project history. — Gore Street Energy Storage Fund plc | Improved GB Revenue and Successful Energisation of Big Rock (200 MW/400 MWh US Asset) · confidence: medium
- Quality notes.2: No expansion, retirement, or repowering is identified for the 200 MW/400 MWh configuration in the cited project history. — LS Energy Solutions in Commercial Operations for CAISO at Big Rock 200 MW/400 MWh Energy Storage Site | LS Energy Solutions · confidence: medium
- Timeline.0: {"event":"Acquisition agreed","date":"2023-02-17","detail":"Gore Street Energy Storage Fund plc announced that it had agreed to acquire the 200 MW/400 MWh Big Rock project in Imperial County from Avantus, formerly 8minute. The announcement characterized the project acquisition costs, including capex around closing, development fees, and milestone payments, as approximately $110 million."} — Gore Street Energy Storage Fund plc | 200 MW acquisition in California · confidence: high
- Timeline.1: {"event":"Construction and battery-system deployment announced","date":"2023-09-07","detail":"LS Energy Solutions announced that Big Rock would use 137 AiON-ESS units, with LS-ES providing commissioning support and operational services. Construction was expected to begin shortly, with commercial operation then expected in the second half of 2024."} — LS Energy Solutions and Gore Street Energy Storage Fund Partner on 200 MW/400 MWh Energy Storage Project | LS Energy Solutions · confidence: high
- Timeline.2: {"event":"Project financing","date":"2023-10-24","detail":"First Citizens Bank announced $60 million in financing to Gore Street Energy Storage Fund plc, serving as lead agent. The facility was intended to support the remaining development of Big Rock and provide additional liquidity to Gore Street’s portfolio."} — First Citizens Provides $60 Million Credit Facility for 200-Megawatt Battery Storage Project in California - Oct 24, 2023 · confidence: high
- Timeline.4: {"event":"Energisation","date":"2025-01-21","detail":"Gore Street announced that the 200 MW/400 MWh Big Rock asset had been energised, describing it as the company’s largest asset at that time."} — Gore Street Energy Storage Fund plc | Improved GB Revenue and Successful Energisation of Big Rock (200 MW/400 MWh US Asset) · confidence: high
- Timeline.6: {"event":"Resource-adequacy revenue commencement","date":"2025-06","detail":"Gore Street stated that Resource Adequacy revenue under the fixed-price contract would commence in June 2025."} — Gore Street Energy Storage Fund plc | Improved GB Revenue and Successful Energisation of Big Rock (200 MW/400 MWh US Asset) · confidence: high
- Timeline.7: {"event":"Commercial operation","date":"2025-09-04","detail":"LS Energy Solutions announced that commercial operations had commenced at Big Rock in Imperial County. The project was providing resource adequacy and ancillary services for CAISO, with 137 AiON-ESS containers and 100 MW of deliverability used to supply 400 MWh under the four-hour RA requirement."} — LS Energy Solutions in Commercial Operations for CAISO at Big Rock 200 MW/400 MWh Energy Storage Site | LS Energy Solutions · confidence: high

## Timeline

- 2023-02-17 — Acquisition agreed
  Gore Street Energy Storage Fund plc announced that it had agreed to acquire the 200 MW/400 MWh Big Rock project in Imperial County from Avantus, formerly 8minute. The announcement characterized the project acquisition costs, including capex around closing, development fees, and milestone payments, as approximately $110 million.
  Source: Gore Street Energy Storage Fund plc | 200 MW acquisition in California (https://www.gsenergystoragefund.com/content/news/archive/2023/170223)
- 2023-09-07 — Construction and battery-system deployment announced
  LS Energy Solutions announced that Big Rock would use 137 AiON-ESS units, with LS-ES providing commissioning support and operational services. Construction was expected to begin shortly, with commercial operation then expected in the second half of 2024.
  Source: LS Energy Solutions and Gore Street Energy Storage Fund Partner on 200 MW/400 MWh Energy Storage Project | LS Energy Solutions (https://www.ls-es.com/ls-energy-solutions-and-gore-street-energy-storage-fund-partner-on-200-mw-400-mwh-energy-storage-project/)
- 2025-09-04 — Commercial operation
  LS Energy Solutions announced that commercial operations had commenced at Big Rock in Imperial County. The project was providing resource adequacy and ancillary services for CAISO, with 137 AiON-ESS containers and 100 MW of deliverability used to supply 400 MWh under the four-hour RA requirement.
  Source: LS Energy Solutions in Commercial Operations for CAISO at Big Rock 200 MW/400 MWh Energy Storage Site | LS Energy Solutions (https://www.ls-es.com/ls-energy-solutions-in-commercial-operations-for-caiso-at-big-rock-200-mw-400-mwh-energy-storage-site/)

## Sources

- [Sustainability and Impact is part of our DNA | Gore Street Energy Storage Fund plc](https://www.gsenergystoragefund.com/) — gsenergystoragefund.com · tier other
- [California Calling as US Expansion Continues - Gore Street Capital](https://www.gorestreetcap.com/blog/california-calling-as-us-expansion-continues/) — gorestreetcap.com · tier other
- [Federal Register :: Big Rock ESS Assets LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for Blanket Section 204 Authorization](https://www.federalregister.gov/documents/2024/06/11/2024-12757/big-rock-ess-assets-llc-supplemental-notice-that-initial-market-based-rate-filing-includes-request) — federalregister.gov · tier regulatory
- [Combined Filings](https://www.regulations.gov/document/FERC-2024-0900-0001) — regulations.gov · tier regulatory
- [Avantus Completes Sale of 200-Megawatt Energy Storage Project to Gore Street Energy Fund](https://www.businesswire.com/news/home/20230217005321/en/Avantus-Completes-Sale-of-200-Megawatt-Energy-Storage-Project-to-Gore-Street-Energy-Fund) — businesswire.com · tier other
- [LS Energy Solutions in Commercial Operations for CAISO ...](https://www.ls-es.com/ls-energy-solutions-in-commercial-operations-for-caiso-at-big-rock-200-mw-400-mwh-energy-storage-site/) — ls-es.com · tier other
- [LS Energy Solutions and Gore Street Energy Storage Fund Partner on 200 MW/400 MWh Energy Storage Project | LS Energy Solutions](https://www.ls-es.com/ls-energy-solutions-and-gore-street-energy-storage-fund-partner-on-200-mw-400-mwh-energy-storage-project/) — ls-es.com · tier other
- [Source](https://www.icpds.com/assets/planning/final-environmental-impact-reports/laurel-cluster-solar-farms-big-rock-cluster/appendix-l-water-supply-assessment.pdf) — icpds.com · tier other
- [Source](https://ls-es.com/ls-energy-solutions-and-gore-street-energy-storage-fund-partner-on-200-mw-400-mwh-energy-storage-project) — ls-es.com · tier other
- [LS Energy Solutions Introduces Its Next-Generation All-in-One Energy Storage System, the AiON-ESS | LS Energy Solutions](https://www.ls-es.com/ls-energy-solutions-introduces-its-next-generation-all-in-one-energy-storage-system-the-aion-ess) — ls-es.com · tier other
- [Gore Street Energy Storage Fund plc | 200 MW acquisition in California](https://www.gsenergystoragefund.com/content/news/archive/2023/170223) — gsenergystoragefund.com · tier other
- [First Citizens Provides $60 Million Credit Facility for 200-Megawatt Battery Storage Project in California - Oct 24, 2023](https://newsroom.firstcitizens.com/2023-10-24-First-Citizens-Provides-60-Million-Credit-Facility-for-200-Megawatt-Battery-Storage-Project-in-California) — newsroom.firstcitizens.com · tier other
- [Gore Street Energy Storage Fund plc | Improved GB Revenue and Successful Energisation of Big Rock (200 MW/400 MWh US Asset)](https://www.gsenergystoragefund.com/content/news/archive/2025/210125.asp) — gsenergystoragefund.com · tier other
- [Gore Street Energy Storage Fund plc | 12-year Fixed-Price Stackable Contract Secured](https://www.gsenergystoragefund.com/content/news/archive/2024/181024.asp) — gsenergystoragefund.com · tier other

## Data quality

- The approximately $110 million figure is disclosed as project acquisition costs, including capex incurred around closing, development fees, and milestone payments; it is not separately identified as a pure cash sale price. The January 21, 2025 energisation announcement, the EIA first-unit-online date of May 1, 2025, and the September 4, 2025 commercial-operation announcement represent different project milestones and should not be treated as interchangeable. No expansion, retirement, or repowering is identified for the 200 MW/400 MWh configuration in the cited project history.

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Canonical page: https://askthegrid.com/assets/facilities/big-rock-solar-farm

Source: Ask the Grid — https://askthegrid.com/