Sunlight Storage II
NextEra Energy Resources, LLCRiverside County
Sunlight Storage II is a battery energy storage facility with 230 MW of EIA-reported operating capacity in Riverside County, California, registered as EIA Plant ID 66575. Sunlight Storage II owns and operates the plant. Commercial operation began in April 2024. The facility interconnects at Southern California Edison Red Bluff Substation at 230 kV. Its grid role is co-located solar-shifting energy storage: the system stores electricity from the Desert Sunlight Solar Farm and releases it when power is most needed, improving grid reliability and renewable-energy availability.
Batteries
Sunlight Storage II is operating.
230 kV · Southern California Edison (SCE)
EIA plant 66575 · Inventory for Sep 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| SUNS2 | Batteries | Operating | 230 | 920 |
Similar plants ranked by technology, capacity, and distance.
Current generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| SUNS2 | 230 MW 230 MW summer | Batteries BA | Apr 2024 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Project milestones and public references behind the asset profile.
The California Water Board record states that the Sunlight Storage II Project application was received on October 14, 2022 and deemed complete on December 27, 2022.
CAISO
CAISO · Riverside County
EIA-923 reports gross generation and net grid exchange for storage plants. Gross generation is shown as a discharge proxy; it is not a cycle count or conventional capacity factor.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
Order R7-2023-0009 identified Sunlight Storage II, LLC as applicant and described a BESS of up to 300 MW on approximately 30 acres. Planned construction was May 2023 through March 2024.
The plant record reports commercial operation in April 2024, and BLM announced on April 15, 2024 that Sunlight Storage II was fully operational and contributing storage to the California grid.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Sunlight Storage II reports 230 MW battery storage of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.
Sunlight Storage II is a batteries facility in Riverside County, CA, participating in the CAISO market.
Sunlight Storage II is in Riverside County, CA, inside the CAISO balancing area.
Sunlight Storage II is operated by Sunlight Storage II according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Sunlight Storage II reported 284.9 GWh over the twelve months to 2026-07. For a storage plant this is reported gross generation — a discharge proxy, not a cycle count or a conventional capacity factor.
Sunlight Storage II interconnects at Southern California Edison Red Bluff Substation, on the Southern California Edison (SCE) system.
By capacity, Sunlight Storage II ranks #45 of 1,061 operating plants of the same technology nationally. It ranks #11 of 272 in CA.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.