Sunlight Storage II — Plant Summary
- EIA Plant ID
- 66575
- Capacity
- 230 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries
- Status
- Operating
- Location
- Riverside, CA
- Operating Since
- 2024
- Generators
- 1
- Operator
- Sunlight Storage II
- Parent Company
- —
- Annual Generation
- -48,373 MWh
- Capacity Factor
- -2.4%
- Balancing Authority
- California Independent System Operator
- ISO/RTO
- CAISO
- NERC Region
- WECC
Sunlight Storage II
OperatingBESS
Ranked #20 of 191 BESS plants in CA#124 of 837 nationally
230 MW BESS operating in Riverside, CA — California Independent System Operator
EIA
230 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2024
Operating Since
Location
Coordinates
33.8095, -115.7939
County
Riverside, CA
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Sunlight Storage II | — | — |
| Owner(s) | Sunlight Storage II | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
Sunlight Storage II is a 230 MW battery energy storage system located in Riverside County, California. The plant began operating in 2024 and is owned and operated by Sunlight Storage II. It utilizes lithium-ion (LIB) battery chemistry and has a total storage capacity of 920 MWh, providing a duration of 4 hours at its full output. The facility consists of a single generator and its primary fuel source is listed as 'MWH', indicating it draws power from the grid to charge its batteries.
The plant operates within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. Sunlight Storage II is ranked as the 57th largest power plant in California out of 112, and nationally it is ranked 231st out of 514.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
California Independent System Operator
Grid Voltage
220 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
−3.5K MWh
Net Charging
-48.4K MWh
Annual Net Energy
-2.4%
Capacity Factor
Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.
Financial Data
No financial data available for this plant.
Pricing & Market Data
UNKNOWN confidenceMarket Position
ISO/RTO Market
CAISO
LMP Node
—
Pricing Hub
TH_SP15_GEN-APND
Node Source
Plant coordinates only
News & Articles (10)Beta
Regulatory·state puc
California’s new bill could usher in a “safe-by-design” era for battery storage
Developers have less than two months to prepare for California's new safety standards, where smart documentation -not system redesign - will...
California (regulator)
ESS News·4 months ago
Regulatory·state puc
California PUC approves battery storage safety rules
The rules require battery storage facility owners to develop emergency response and emergency action plans.
California PUC (regulator)
Utility Dive·1 years ago
Regulatory·state puc
California PUC proposes energy storage safety, emergency response requirements
Published 10 days after a fire at Vistra's 300-MW battery installation near Santa Cruz, the California Public Utilities Commission's...
California Public Utilities Commission (regulator)Vistra (operator)
Utility Dive·1 years ago
Industry·technology
Energy storage for grid reliability can increase carbon emissions: University of Michigan study
Energy storage is often pitched as a way to make renewables more reliable and reduce the use of planet-warming fuels, but researchers at the...
University of Michigan (other)
Utility Dive·1 years ago
Last updated 2026-03-26
View all 10 articles