# RE Mustang LLC

CAISO Batteries, Solar Photovoltaic · https://askthegrid.com/assets/facilities/re-mustang-llc

RE Mustang LLC is a hybrid solar and battery storage facility with 175 MW of EIA-reported operating capacity in Kings County, California, registered as EIA Plant ID 59150. Mustang was the first utility-scale solar project fully contracted with community choice aggregators to obtain non-recourse financing, in October 2015. Renewable Power Group of Goldman Sachs Asset Management, L. P.

## Key facts

- Technology: Batteries, Solar Photovoltaic
- Power capacity: 175 MW
- Operating status: operating

## Grid and market context

- ISO/RTO: CAISO
- Balancing authority: CISO
- Substation: Mustang Switching Station
- Point of interconnection: Mustang Switching Station
- Transmission owner: Pacific Gas & Electric Co.
- Interconnection voltage: 230 kV

## Source-backed facts

- Owner logo domain: mn8.com — MN8 Energy | Independent Power Producer—Enterprise... · confidence: medium
- Identifiers: [{"value":"59150","system":"EIA plant ID"},{"value":"CISO","system":"ISO/RTO / balancing authority"},{"value":"PV1","system":"FERC/EIA generator ID"},{"value":"BESS1","system":"FERC generator ID"},{"value":"ER16-498-000","system":"FERC market-based-rate docket"},{"value":"ER16-499-000","system":"FERC market-based-rate docket"},{"value":"ER16-500-000","system":"FERC market-based-rate docket"},{"value":"ER21-1962-001","system":"FERC market-based-rate docket"},{"value":"Mustang Switching Station 230 kV","system":"Interconnection facility / POI"}] — Sheet1 · confidence: medium
- Identifiers.8: {"value":"Mustang Switching Station 230 kV","system":"Interconnection facility / POI"} — Sheet1 · confidence: medium
- Parties.5: {"relationship":"Historical project buyer / owner through Renewable Power Group","name":"Goldman Sachs Asset Management","official_url":"https://www.goldmansachs.com/"} — Canadian Solar Subsidiary Recurrent Energy Completes Sale of Mustang Solar Project to Goldman Sachs - Recurrent Energy · confidence: high
- Parties.6: {"relationship":"Solar facility EPC contractor","name":"Blattner Energy","official_url":"https://www.blattnercompany.com/"} — Canadian Solar Subsidiary Recurrent Energy Announces Commercial Operation of 100 Megawatt Mustang Solar Power Project - Recurrent Energy · confidence: high
- Parties.7: {"relationship":"Mustang Switching Station EPC contractor","name":"Dashiell Corporation","official_url":"https://www.dashiell.com/"} — Microsoft Word - 2016-08-16_RE Mustang_MCE Monthly Report_Draft.docx · confidence: high
- Parties.10: {"relationship":"Power offtaker","name":"Sonoma Clean Power","official_url":"https://sonomacleanpower.org/"} — Canadian Solar Subsidiary Recurrent Energy Completes Sale of Mustang Solar Project to Goldman Sachs - Recurrent Energy · confidence: medium
- Commercial operation date: 2016-08 — Source · confidence: high
- Construction scope: RE Mustang is a 100 MWac/134 MWp solar PV facility on approximately 1,000 acres in Kings County, California, interconnected through the 230 kV Mustang Switching Station. A 75 MW / 300 MWh lithium-ion, LFP battery-storage system was added as a retrofit and is listed as installed in September 2021. Blattner Energy provided EPC services for the PV facility, while Dashiell Corporation provided EPC services for the 230 kV breaker-and-a-half switching station. The sources identify PV panels and inverters generically but do not report exact installed module, inverter, battery-unit, or enclosure counts. — BYD energy provides energy storage batteries for California solar plant - Technological Innovations for a Better Life | BYD USA · confidence: medium
- Product url: https://en.byd.com/news/byd-energy-provides-energy-storage-batteries-for-california-solar-plant/ — BYD energy provides energy storage batteries for California solar plant - Technological Innovations for a Better Life | BYD USA · confidence: medium
- Construction scope: RE Mustang is a 100 MWac/134 MWp solar PV facility on approximately 1,000 acres in Kings County, California, interconnected through the 230 kV Mustang Switching Station. A 75 MW / 300 MWh lithium-ion, LFP battery-storage system was added as a retrofit and is listed as installed in September 2021. Blattner Energy provided EPC services for the PV facility, while Dashiell Corporation provided EPC services for the 230 kV breaker-and-a-half switching station. The sources identify PV panels and inverters generically but do not report exact installed module, inverter, battery-unit, or enclosure counts. — Canadian Solar Subsidiary Recurrent Energy Announces Commercial Operation of 100 Megawatt Mustang Solar Power Project - Recurrent Energy · confidence: medium
- Construction scope: RE Mustang is a 100 MWac/134 MWp solar PV facility on approximately 1,000 acres in Kings County, California, interconnected through the 230 kV Mustang Switching Station. A 75 MW / 300 MWh lithium-ion, LFP battery-storage system was added as a retrofit and is listed as installed in September 2021. Blattner Energy provided EPC services for the PV facility, while Dashiell Corporation provided EPC services for the 230 kV breaker-and-a-half switching station. The sources identify PV panels and inverters generically but do not report exact installed module, inverter, battery-unit, or enclosure counts. — 75 MW Mustang Solar Plant – CSI Solar – North America · confidence: medium
- Product url: https://en.byd.com/news/byd-energy-provides-energy-storage-batteries-for-california-solar-plant/ — BYD energy provides energy storage batteries for California solar plant - Technological Innovations for a Better Life | BYD USA · confidence: high
- Equipment models: [{"manufacturer_domain":"byd.com","product_url":"https://en.byd.com/news/byd-energy-provides-energy-storage-batteries-for-california-solar-plant/","count":null,"unit_mw":null,"name":"BYD Cube Pro"}] — BYD energy provides energy storage batteries for California solar plant - Technological Innovations for a Better Life | BYD USA · confidence: medium
- Product family: Cube Pro — BYD energy provides energy storage batteries for California solar plant - Technological Innovations for a Better Life | BYD USA · confidence: high
- Equipment models.0: {"manufacturer_domain":"byd.com","product_url":"https://en.byd.com/news/byd-energy-provides-energy-storage-batteries-for-california-solar-plant/","count":null,"unit_mw":null,"name":"BYD Cube Pro"} — BYD energy provides energy storage batteries for California solar plant - Technological Innovations for a Better Life | BYD USA · confidence: medium
- Description: RE Mustang LLC is an operational solar-and-battery facility in Kings County, California, with an aggregated nameplate capacity of approximately 175 MW. Recurrent Energy developed the original 100 MWac solar project, which reached commercial operation on July 12, 2016. Recurrent Energy sold its equity stake to Goldman Sachs Asset Management’s Renewable Power Group in May 2019; Goldman’s renewable-power platform was subsequently renamed MN8 Energy in June 2022, and MN8 is the current owner and operator. Canadian Solar added a 75 MW/300 MWh lithium-ion battery system in 2021. — Canadian Solar to Provide a 75 MW / 300 MWh Energy Storage System to the Mustang Solar Project in California | Canadian Solar Inc. · confidence: medium
- Description: RE Mustang LLC is an operational solar-and-battery facility in Kings County, California, with an aggregated nameplate capacity of approximately 175 MW. Recurrent Energy developed the original 100 MWac solar project, which reached commercial operation on July 12, 2016. Recurrent Energy sold its equity stake to Goldman Sachs Asset Management’s Renewable Power Group in May 2019; Goldman’s renewable-power platform was subsequently renamed MN8 Energy in June 2022, and MN8 is the current owner and operator. Canadian Solar added a 75 MW/300 MWh lithium-ion battery system in 2021. — Goldman Sachs Asset Management Announces... · confidence: medium
- Quality notes.3: The documented battery project is described as a retrofit addition. No retirement or full repowering event is identified in the project history. — Canadian Solar to Provide a 75 MW / 300 MWh Energy Storage System to the Mustang Solar Project in California | Canadian Solar Inc. · confidence: medium
- Timeline.0: {"event":"Conditional-use approval","date":"2012-08-06","detail":"RE Mustang received its Conditional Use Permit for the Kings County facility."} — Microsoft Word - 2016-08-16_RE Mustang_MCE Monthly Report_Draft.docx · confidence: high
- Timeline.1: {"event":"Power-purchase agreement","date":"2014-10-03","detail":"RE Mustang 4 LLC and Marin Clean Energy executed a 15-year power purchase and sale agreement covering energy, renewable-energy credits, and capacity."} — Microsoft Word - 2016-08-16_RE Mustang_MCE Monthly Report_Draft.docx · confidence: high
- Timeline.2: {"event":"Solar EPC contract","date":"2014-12-12","detail":"RE Mustang executed an EPC contract with Blattner Energy for construction of the PV facility."} — Microsoft Word - 2016-08-16_RE Mustang_MCE Monthly Report_Draft.docx · confidence: high
- Timeline.3: {"event":"Interconnection and switching-station construction","date":"2015","detail":"PG&E accepted the switching-station design in the second quarter of 2015, and Dashiell Corporation began construction of the 230 kV Mustang Switching Station."} — Microsoft Word - 2016-08-16_RE Mustang_MCE Monthly Report_Draft.docx · confidence: high
- Timeline.5: {"event":"Notice to proceed","date":"2015-09-01","detail":"RE Mustang issued notice to proceed to Blattner Energy for PV-facility construction."} — Microsoft Word - 2016-08-16_RE Mustang_MCE Monthly Report_Draft.docx · confidence: high
- Timeline.6: {"event":"Switching-station transfer to PG&E","date":"2015-10-14","detail":"RE Mustang completed transfer of the Mustang Switching Station to PG&E after the first 230 kV transmission line was looped in, energized, and tested."} — Microsoft Word - 2016-08-16_RE Mustang_MCE Monthly Report_Draft.docx · confidence: high
- Timeline.7: {"event":"Solar commercial operation","date":"2016-07-12","detail":"The original 100 MWac solar project reached commercial operation."} — Microsoft Word - 2016-08-16_RE Mustang_MCE Monthly Report_Draft.docx · confidence: high
- Timeline.10: {"event":"Battery construction and installation","date":"2021-09","detail":"The 75 MW/300 MWh outdoor-enclosure, lithium-iron-phosphate battery system was installed at Mustang."} — 75 MW Mustang Solar Plant – CSI Solar – North America · confidence: high
- Timeline.11: {"event":"MN8 Energy platform transition","date":"2022-06-02","detail":"The Goldman Sachs renewable-power company was announced as being renamed MN8 Energy; MN8 is the current owner and operator identified for the Mustang plant."} — Goldman Sachs Asset Management Announces... · confidence: high
- Commercial parties.0: {"relationship":"Current owner and operator","name":"MN8 Energy LLC","detail":"Current owner and operator of the operational RE Mustang solar-and-battery plant; MN8 was formed within Goldman Sachs’ renewable-power platform.","official_url":"https://mn8.com/"} — Goldman Sachs Asset Management Announces... · confidence: medium
- Commercial parties.4: {"relationship":"Developer and original project sponsor","name":"Recurrent Energy","detail":"Canadian Solar subsidiary that developed the original Mustang solar project and later sold its equity stake.","official_url":"https://recurrentenergy.com/"} — Canadian Solar to Provide a 75 MW / 300 MWh Energy Storage System to the Mustang Solar Project in California | Canadian Solar Inc. · confidence: high
- Commercial parties.9: {"relationship":"Solar EPC contractor","name":"Blattner Energy","detail":"Provided engineering, procurement, and construction services for the original solar facility.","official_url":"https://www.blattnercompany.com/"} — Microsoft Word - 2016-08-16_RE Mustang_MCE Monthly Report_Draft.docx · confidence: high
- Commercial parties.10: {"relationship":"Switching-station EPC contractor","name":"Dashiell Corporation","detail":"Provided EPC services for the 230 kV Mustang Switching Station required for interconnection.","official_url":"https://www.dashiell.com/"} — Microsoft Word - 2016-08-16_RE Mustang_MCE Monthly Report_Draft.docx · confidence: high
- Commercial parties.11: {"relationship":"Solar power offtaker","name":"Marin Clean Energy","detail":"Executed a 15-year PPA for energy, renewable-energy credits, and capacity from the project.","official_url":"https://mcecleanenergy.org/"} — Microsoft Word - 2016-08-16_RE Mustang_MCE Monthly Report_Draft.docx · confidence: high
- Commercial parties.12: {"relationship":"Solar power offtaker","name":"Sonoma Clean Power","detail":"Identified as one of the California community-choice-aggregator offtakers for Mustang’s electricity.","official_url":"https://sonomacleanpower.org/"} — Canadian Solar will retrofit 300MWh of batteries at Goldman Sachs’s Mustang Solar plant, California - Energy-Storage.News · confidence: high

## Timeline

- 2016-08 — Commercial operation
  RE Mustang LLC entered commercial operation.
  Source: Source (https://recurrentenergy.com/canadian-solar-subsidiary-recurrent-energy-announces-commercial-operation-of-100-megawatt-mustang-solar-power-project)
- 2019-05-16 — Sale to Goldman Sachs
  Recurrent Energy sold its equity stake in the 134 MWp/100 MWac Mustang solar project to the Renewable Power Group of Goldman Sachs Asset Management. The announcement did not disclose sale consideration.
  Source: Canadian Solar Subsidiary Recurrent Energy Completes Sale of Mustang Solar Project to Goldman Sachs - Recurrent Energy (https://recurrentenergy.com/mustang-sale/)

## Sources

- [MN8 Energy | Independent Power Producer—Enterprise ...](https://mn8.com/) — mn8.com · tier other
- [Sheet1](https://www.caiso.com/documents/interconnection-area-substation-point-interconnection-poi-list.xlsx) — caiso.com · tier other
- [Canadian Solar Subsidiary Recurrent Energy Announces Commercial Operation of 100 Megawatt Mustang Solar Power Project - Recurrent Energy](https://recurrentenergy.com/canadian-solar-subsidiary-recurrent-energy-announces-commercial-operation-of-100-megawatt-mustang-solar-power-project/) — recurrentenergy.com · tier other
- [Microsoft Word - 2016-08-16_RE Mustang_MCE Monthly Report_Draft.docx](https://mcecleanenergy.org/wp-content/uploads/2018/05/2016-08-16_RE-Mustang_MCE-Monthly-Report_FINAL.pdf) — mcecleanenergy.org · tier other
- [Canadian Solar Subsidiary Recurrent Energy Completes Sale of Mustang Solar Project to Goldman Sachs - Recurrent Energy](https://recurrentenergy.com/mustang-sale/) — recurrentenergy.com · tier other
- [Source](https://recurrentenergy.com/canadian-solar-subsidiary-recurrent-energy-announces-commercial-operation-of-100-megawatt-mustang-solar-power-project) — recurrentenergy.com · tier other
- [BYD energy provides energy storage batteries for California solar plant - Technological Innovations for a Better Life | BYD USA](https://en.byd.com/news/byd-energy-provides-energy-storage-batteries-for-california-solar-plant/) — en.byd.com · tier other
- [Canadian Solar to Provide a 75 MW / 300 MWh Energy Storage System to the Mustang Solar Project in California | Canadian Solar Inc.](https://investors.canadiansolar.com/news-releases/news-release-details/canadian-solar-provide-75-mw-300-mwh-energy-storage-system) — investors.canadiansolar.com · tier other
- [75 MW Mustang Solar Plant – CSI Solar – North America](https://www.csisolar.com/na/mustang-solar-plant/) — csisolar.com · tier other
- [Goldman Sachs Asset Management Announces ...](https://mn8.com/goldman-sachs-asset-management-announces-agreement-to-create-independent-renewable-power-company/) — mn8.com · tier other
- [Canadian Solar will retrofit 300MWh of batteries at Goldman Sachs’s Mustang Solar plant, California - Energy-Storage.News](https://energy-storage.news/canadian-solar-will-retrofit-300mwh-of-batteries-at-goldman-sachss-mustang-solar-plant-california/) — energy-storage.news · tier other
- [Resource category and phase](https://www.caiso.com/documents/resourcecategoryandphaseallparticipatingresourceids.xlsx) — caiso.com · tier other

## Data quality

- The 175 MW figure combines the original 100 MWac solar facility with the 75 MW battery power rating; the battery’s separate energy capacity is 300 MWh. The May 2019 announcement describes a sale of Recurrent Energy’s equity stake but does not disclose sale consideration; the disclosed $165 million and $101 million amounts relate to project financing, not acquisition price. The documented battery project is described as a retrofit addition. No retirement or full repowering event is identified in the project history.

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