# Raceway Solar & Storage

CAISO Batteries, Solar Photovoltaic · https://askthegrid.com/assets/facilities/raceway-solar-and-storage

Raceway Solar & Storage is a hybrid solar and battery storage facility with 205 MW of EIA-reported total operating capacity and 320 MWh of reported storage energy capacity in Los Angeles County, California, registered as EIA Plant ID 66773. AES Clean Energy owns and operates the plant. Its grid role is co-located solar photovoltaic and battery-storage resource; the battery provides storage flexibility alongside the solar generator.

## Key facts

- Technology: Batteries, Solar Photovoltaic
- Power capacity: 205 MW
- Energy capacity: 320 MWh
- Operating status: operating

## Grid and market context

- ISO/RTO: CAISO
- Balancing authority: CISO (CAISO)

## Source-backed facts

- Owner logo domain: aes.com — Source · confidence: medium
- Identifiers: [{"value":"66773","system":"EIA plant ID"},{"value":"55517","system":"FERC EIA record ID"},{"value":"55518","system":"FERC EIA record ID"},{"value":"RCWYS","system":"EIA/FERC generator ID"},{"value":"RCWYB","system":"EIA/FERC generator ID"},{"value":"CISO","system":"Balancing authority"},{"value":"CAISO","system":"Power market / ISO"}] — MBR | Index · confidence: medium
- Official project url: https://www.aes.com/sustainability-impact/people-communities/california — AES' Clean Energy & Net Zero Future in California · confidence: medium
- Description: Raceway Solar & Storage is an operational solar-and-battery power plant in Los Angeles County, California, with 205 MW of nameplate capacity across two generating units. AES lists the facility as a 125 MW solar-plus-storage project with an 80 MW, 320 MWh battery energy storage system. The plant’s first unit came online on May 1, 2024. — AES' Clean Energy & Net Zero Future in California · confidence: high
- Identifiers.1: {"value":"55517","system":"FERC EIA record ID"} — MBR | Index · confidence: medium
- Identifiers.2: {"value":"55518","system":"FERC EIA record ID"} — MBR | Index · confidence: medium
- Identifiers.3: {"value":"RCWYS","system":"EIA/FERC generator ID"} — Index - MBR · confidence: medium
- Identifiers.4: {"value":"RCWYB","system":"EIA/FERC generator ID"} — MBR | Index · confidence: medium
- Construction scope: Raceway Solar & Storage is an operating co-located facility comprising 125 MW of solar PV and an 80 MW / 320 MWh BESS. The documented physical build scope includes site demolition, array and basin grading, access-road construction, medium-voltage and DC trenching/backfill, and BESS foundations with associated trenching; related transmission works include underground medium-voltage cables, aboveground poles, and overhead high-voltage lines. Trimark reports one power plant controller for Raceway and a control stack comprising Vantage HMI/T1-S, SCADA, site networking, revenue metering, and a Remote Intelligent Gateway. Sukut's civil quantities of 181 MWac and 272 MWh apply to its combined Estrella/Raceway project and are not allocated to Raceway alone. — Trimark Guides AES' Raceway and Estrella PV+BESS Resources Through SCE’s New Interconnection Testing Protocol · confidence: medium
- Product url: https://trimarkassoc.com/pvbess-scada/ — PV+BESS SCADA Solutions For Power Producers & Developers · confidence: medium
- Product url: https://trimarkassoc.com/pvbess-scada/ — T1-S SCADA · confidence: medium
- Manufacturer domain: trimarkassoc.com — T1-S SCADA · confidence: high
- Equipment models: [{"manufacturer_domain":"trimarkassoc.com","product_url":"https://trimarkassoc.com/pvbess-scada/","count":1,"unit_mw":null,"name":"Trimark Vantage HMI / T1-S power plant controller and SCADA"}] — T1-S SCADA · confidence: medium
- Product family: Vantage HMI / T1-S SCADA and power plant controller — T1-S SCADA · confidence: high
- Manufacturer name: Trimark Associates — T1-S SCADA · confidence: high
- Equipment models.0: {"manufacturer_domain":"trimarkassoc.com","product_url":"https://trimarkassoc.com/pvbess-scada/","count":1,"unit_mw":null,"name":"Trimark Vantage HMI / T1-S power plant controller and SCADA"} — T1-S SCADA · confidence: medium
- Construction scope: Raceway Solar & Storage is an operating co-located facility comprising 125 MW of solar PV and an 80 MW / 320 MWh BESS. The documented physical build scope includes site demolition, array and basin grading, access-road construction, medium-voltage and DC trenching/backfill, and BESS foundations with associated trenching; related transmission works include underground medium-voltage cables, aboveground poles, and overhead high-voltage lines. Trimark reports one power plant controller for Raceway and a control stack comprising Vantage HMI/T1-S, SCADA, site networking, revenue metering, and a Remote Intelligent Gateway. Sukut's civil quantities of 181 MWac and 272 MWh apply to its combined Estrella/Raceway project and are not allocated to Raceway alone. — Trimark Guides AES' Raceway and Estrella PV+BESS Resources Through SCE’s New Interconnection Testing Protocol · confidence: medium
- Construction scope: Raceway Solar & Storage is an operating co-located facility comprising 125 MW of solar PV and an 80 MW / 320 MWh BESS. The documented physical build scope includes site demolition, array and basin grading, access-road construction, medium-voltage and DC trenching/backfill, and BESS foundations with associated trenching; related transmission works include underground medium-voltage cables, aboveground poles, and overhead high-voltage lines. Trimark reports one power plant controller for Raceway and a control stack comprising Vantage HMI/T1-S, SCADA, site networking, revenue metering, and a Remote Intelligent Gateway. Sukut's civil quantities of 181 MWac and 272 MWh apply to its combined Estrella/Raceway project and are not allocated to Raceway alone. — Source · confidence: medium
- Product url: https://trimarkassoc.com/pvbess-scada/ — PV+BESS SCADA Solutions For Power Producers & Developers · confidence: medium
- Product url: https://trimarkassoc.com/pvbess-scada/ — T1-S SCADA · confidence: medium
- Kind: bess — Trimark Guides AES' Raceway and Estrella PV+BESS Resources Through SCE’s New Interconnection Testing Protocol · confidence: medium
- Manufacturer domain: trimarkassoc.com — PV+BESS SCADA Solutions For Power Producers & Developers · confidence: medium
- Equipment models: [{"manufacturer_domain":"trimarkassoc.com","product_url":"https://trimarkassoc.com/pvbess-scada/","count":1,"unit_mw":null,"name":"Trimark Vantage HMI / T1-S power plant controller and SCADA"}] — Trimark Guides AES' Raceway and Estrella PV+BESS Resources Through SCE’s New Interconnection Testing Protocol · confidence: medium
- Product family: Vantage HMI / T1-S SCADA and power plant controller — Trimark Guides AES' Raceway and Estrella PV+BESS Resources Through SCE’s New Interconnection Testing Protocol · confidence: medium
- Equipment models.0: {"manufacturer_domain":"trimarkassoc.com","product_url":"https://trimarkassoc.com/pvbess-scada/","count":1,"unit_mw":null,"name":"Trimark Vantage HMI / T1-S power plant controller and SCADA"} — Trimark Guides AES' Raceway and Estrella PV+BESS Resources Through SCE’s New Interconnection Testing Protocol · confidence: medium
- Description: Raceway Solar & Storage is an operational solar-and-battery power plant in Los Angeles County, California, with two generating units totaling 205 MW of nameplate capacity. AES lists the project configuration as 125 MW of solar generation plus an 80 MW, 320 MWh battery energy-storage system. AES Clean Energy is identified as the operator, and AES announced that Microsoft would purchase the energy generated by the facility. The first unit came online on May 1, 2024, and AES publicly announced commencement of operations in June 2024. — Source · confidence: medium
- Description: Raceway Solar & Storage is an operational solar-and-battery power plant in Los Angeles County, California, with two generating units totaling 205 MW of nameplate capacity. AES lists the project configuration as 125 MW of solar generation plus an 80 MW, 320 MWh battery energy-storage system. AES Clean Energy is identified as the operator, and AES announced that Microsoft would purchase the energy generated by the facility. The first unit came online on May 1, 2024, and AES publicly announced commencement of operations in June 2024. — AES, Microsoft: Accelerating Clean Energy in CA · confidence: medium
- Quality notes: ["AES’s California project listing describes Raceway as spanning Kern County and Los Angeles County, while EIA plant 66773 identifies the exact operating plant in Los Angeles County; Raceway 2.0 and Raceway North are separate projects and are excluded.","The disclosed $6 million California Competes Tax Credit is a tax incentive, not disclosed project debt, equity financing, or sale consideration.","No project-specific acquisition, sale, predecessor-owner, construction-start or construction-completion, expansion, retirement, or repowering transaction is disclosed in the identified project and regulatory records. AES’s 2017 sPower acquisition was a portfolio transaction and is not expressly attributed to Raceway."] — Source · confidence: medium
- Financing summary: A California Competes Tax Credit agreement became effective on April 27, 2023 and provided a $6,000,000 credit award to a group including AES Clean Energy Development LLC and Raceway Solar 1 LLC. This is a state tax incentive rather than disclosed project-level debt or equity financing; no project-financing amount, lender, tax-equity investor, acquisition price, or sale consideration is identified. — Source · confidence: medium
- Timeline: [{"event":"Project transmission franchise","date":"2022-07-12","detail":"Los Angeles County adopted a resolution of intention to grant Raceway Solar 1, LLC a 35-year electrical-transmission franchise for the Silverado Power West Los Angeles Project."},{"event":"California Competes tax credit","date":"2023-04-27","detail":"The California Competes Tax Credit agreement became effective. The award amount was $6,000,000, and Raceway Solar 1 LLC was among the named parties."},{"event":"FERC market-based-rate filing","date":"2023-04-20","detail":"Raceway Solar 1, LLC filed a baseline eTariff for market-based-rate authority, with an effective date of May 1, 2023."},{"event":"First unit online","date":"2024-05-01","detail":"The first generating unit came online, marking the plant’s initial recorded operating date."},{"event":"Commencement of operations announced","date":"2024-06-04","detail":"AES announced commencement of operations at the Raceway solar-plus-storage project and identified Microsoft as the purchaser of the generated energy."},{"event":"Acquisition, sale, and predecessor-owner history","date":null,"detail":"No project-specific buyer, seller, predecessor owner, or transaction month/year is disclosed for Raceway Solar & Storage."},{"event":"Construction history","date":null,"detail":"The records establish permitting and subsequent operation but do not disclose a construction start date, construction-completion date, EPC contractor, or construction-financing close."},{"event":"Expansion, retirement, and repowering history","date":null,"detail":"No expansion, retirement, or repowering milestone is disclosed; the plant is identified as operational with two operational units."}] — AES, Microsoft: Accelerating Clean Energy in CA · confidence: medium
- Commercial parties: [{"relationship":"Operator","name":"AES Clean Energy","detail":"AES Clean Energy is identified as the operator of the 205 MW Raceway Solar & Storage plant.","official_url":"https://www.aes.com/"},{"relationship":"Project company and FERC applicant","name":"Raceway Solar 1, LLC","detail":"Raceway Solar 1, LLC is the project entity named in the Los Angeles County transmission-franchise record and the FERC market-based-rate filing.","official_url":null},{"relationship":"Offtaker","name":"Microsoft","detail":"AES announced that Microsoft would purchase the energy generated by the 125 MW solar and 80 MW battery-energy-storage facility.","official_url":"https://www.microsoft.com/"},{"relationship":"Tax-credit recipient and project sponsor affiliate","name":"AES Clean Energy Development LLC","detail":"AES Clean Energy Development LLC is identified as the credit recipient in the California Competes Tax Credit agreement involving Raceway Solar 1 LLC.","official_url":"https://www.aes.com/"},{"relationship":"Tax-credit awarding agency","name":"California Governor’s Office of Business and Economic Development (GO-Biz)","detail":"GO-Biz is the California state office administering the California Competes Tax Credit agreement associated with Raceway Solar 1 LLC.","official_url":"https://business.ca.gov/"}] — AES, Microsoft: Accelerating Clean Energy in CA · confidence: medium
- Timeline.4: {"event":"Commencement of operations announced","date":"2024-06-04","detail":"AES announced commencement of operations at the Raceway solar-plus-storage project and identified Microsoft as the purchaser of the generated energy."} — AES, Microsoft: Accelerating Clean Energy in CA · confidence: high
- Timeline.7: {"event":"Expansion, retirement, and repowering history","date":null,"detail":"No expansion, retirement, or repowering milestone is disclosed; the plant is identified as operational with two operational units."} — Source · confidence: medium
- Commercial parties.2: {"relationship":"Offtaker","name":"Microsoft","detail":"AES announced that Microsoft would purchase the energy generated by the 125 MW solar and 80 MW battery-energy-storage facility.","official_url":"https://www.microsoft.com/"} — AES, Microsoft: Accelerating Clean Energy in CA · confidence: high
- Quality notes.0: AES’s California project listing describes Raceway as spanning Kern County and Los Angeles County, while EIA plant 66773 identifies the exact operating plant in Los Angeles County; Raceway 2.0 and Raceway North are separate projects and are excluded. — Source · confidence: medium

## Timeline

- 2022-07-12 — Project transmission franchise
  Los Angeles County adopted a resolution of intention to grant Raceway Solar 1, LLC a 35-year electrical-transmission franchise for the Silverado Power West Los Angeles Project.
  Source: Source (https://file.lacounty.gov/SDSInter/bos/supdocs/170539.pdf)
- 2023-04-20 — FERC market-based-rate filing
  Raceway Solar 1, LLC filed a baseline eTariff for market-based-rate authority, with an effective date of May 1, 2023.
  Source: Federal Register, Volume 88 Issue 80 (Wednesday, April 26, 2023) (https://downloads.regulations.gov/FERC-2023-0518-0001/content.htm)
- 2024-06-04 — Commencement of operations announced
  AES announced commencement of operations at the Raceway solar-plus-storage project and identified Microsoft as the purchaser of the generated energy.
  Source: AES, Microsoft: Accelerating Clean Energy in CA (https://www.aes.com/newsroom/aes-and-sustain-our-future-foundation-collaborate-microsoft-accelerate-clean-energy-and)

## Sources

- [Source](https://aes.com/) — aes.com · tier other
- [MBR | Index](https://mbrweb.ferc.gov/SearchlkpEIA/Index?page=781) — mbrweb.ferc.gov · tier regulatory
- [AES' Clean Energy & Net Zero Future in California](https://www.aes.com/sustainability-impact/people-communities/california) — aes.com · tier other
- [Trimark Guides AES' Raceway and Estrella PV+BESS ...](https://trimarkassoc.com/trimark-guides-aes-raceway-and-estrella-pvbess-resources-through-sces-new-interconnection-testing-protocol/) — trimarkassoc.com · tier other
- [PV+BESS SCADA Solutions For Power Producers & Developers](https://trimarkassoc.com/pvbess-scada/) — trimarkassoc.com · tier other
- [T1-S SCADA](https://trimarkassoc.com/wp-content/uploads/2019/01/T1-S_SCADA_Overview.pdf) — trimarkassoc.com · tier other
- [Source](https://file.lacounty.gov/SDSInter/bos/supdocs/170539.pdf) — file.lacounty.gov · tier regulatory
- [AES, Microsoft: Accelerating Clean Energy in CA](https://www.aes.com/newsroom/aes-and-sustain-our-future-foundation-collaborate-microsoft-accelerate-clean-energy-and) — aes.com · tier other
- [Source](https://aes.com/sustainability-impact/people-communities/california) — aes.com · tier other
- [Source](https://business.ca.gov/wp-content/uploads/2024/07/AES-Clean-Energy-Development-LLC-CCTC-AgreementAmended.pdf) — business.ca.gov · tier regulatory
- [Federal Register, Volume 88 Issue 80 (Wednesday, April 26, 2023)](https://downloads.regulations.gov/FERC-2023-0518-0001/content.htm) — downloads.regulations.gov · tier regulatory
- [aes-20251231](https://www.sec.gov/Archives/edgar/data/874761/000087476126000063/aes-20251231.htm) — sec.gov · tier regulatory
- [aes-20221231](https://sec.gov/Archives/edgar/data/874761/000087476123000010/aes-20221231.htm) — sec.gov · tier regulatory
- [08-01-25 Q2 2025 Fact Sheet_FINAL](https://www.aes.com/sites/aesvault.com/files/2025-08/AES-Q2-2025-Fact-Sheet-08-01-25.pdf) — aes.com · tier other
- [03-03-25 Q4-FY 2024 Fact Sheet_FINAL](https://www.aes.com/sites/vault/files/2025-04/AES-Q4-FY24-Fact-Sheet-03-03-25.pdf) — aes.com · tier other
- [Staff Report Item 1 8 TO: East Bay Community Energy Board of Directors Howard Chang, Chief Operating Officer FROM: SUBJECT:](https://avaenergy.org/wp-content/uploads/2019/09/Item-18-Raceway-North-LLC-and-Edwards-Solar-II-LLC-Contract-Approvals-1.pdf) — avaenergy.org · tier other
- [Source](https://caiso.com/notices/announced-resource-retirement-and-mothball-list-posted-4) — caiso.com · tier other
- [2026 NQC List](https://www.caiso.com/documents/net-qualifying-capacity-report-for-compliance-year-2026.xlsx) — caiso.com · tier other

## Data quality

- AES’s California project listing describes Raceway as spanning Kern County and Los Angeles County, while EIA plant 66773 identifies the exact operating plant in Los Angeles County; Raceway 2.0 and Raceway North are separate projects and are excluded. The disclosed $6 million California Competes Tax Credit is a tax incentive, not disclosed project debt, equity financing, or sale consideration. No project-specific acquisition, sale, predecessor-owner, construction-start or construction-completion, expansion, retirement, or repowering transaction is disclosed in the identified project and regulatory records. AES’s 2017 sPower acquisition was a portfolio transaction and is not expressly attributed to Raceway.

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