Caballero — Plant Summary
- EIA Plant ID
- 68012
- Capacity
- 99.7 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries
- Status
- Operating
- Location
- San Luis Obispo, CA
- Operating Since
- 2025
- Generators
- 1
- Operator
- Caballero CA Storage LLC
- Parent Company
- —
- Annual Generation
- -17,119 MWh
- Capacity Factor
- -2.6%
- Balancing Authority
- California Independent System Operator
- ISO/RTO
- CAISO
- NERC Region
- WECC
Caballero
OperatingBESS
Ranked #57 of 191 BESS plants in CA#339 of 837 nationally
99.7 MW BESS operating in San Luis Obispo, CA — California Independent System Operator
EIA
99.7 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2025
Operating Since
Location
Coordinates
35.0064, -120.4537
County
San Luis Obispo, CA
Nearby Plants
- Santa Maria LFG Power PlantLandfill Gas1.1 MW · 6.9 km
- J&A-Santa Maria II LLCLandfill Gas1.4 MW · 9.2 km
- Industrial Parkway StorageBESS9.8 MW · 11.0 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Caballero CA Storage LLC | — | — |
| Owner(s) | Caballero CA Storage LLC | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
Caballero is a 99.7 MW battery energy storage system (BESS) located in San Luis Obispo County, California. The facility, which began operating in 2025, is owned and operated by Caballero CA Storage LLC. It consists of a single generator utilizing battery technology with a storage duration of 4 hours. The plant is connected to the California Independent System Operator (CAISO) balancing authority within the Western Electricity Coordinating Council (WECC) NERC region.
The Caballero facility is ranked as the 113th largest power plant in California out of 300, and 515th nationally out of 1205. News coverage of the plant includes 4 articles related to regulatory matters, 3 related to grid issues, and 3 covering industry topics.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
California Independent System Operator
Grid Voltage
230 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Interconnection Queue1 projectBeta
CABALLERO STORAGE
OperationalBattery106.2 MWCAISO
Generation
−1.6K MWh
Net Charging
-17.1K MWh
Annual Net Energy
-2.6%
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
HIGH confidenceMarket Position
ISO/RTO Market
CAISO
LMP Node
MESA-PGE_1_N036
Pricing Hub
TH_ZP26_GEN-APND
Secondary Zone
TH_SP15_GEN-APND
Location Type
Pricing Node
Node Source
Curated node match
News & Articles (10)Beta
Industry·other
A New Study Links Living Near Nuclear Plants to Higher Cancer Death Rates
A nationwide analysis found that counties closer to nuclear power plants have higher cancer mortality rates.
Gizmodo·3 weeks ago
General
Trump-backed gas plant could become biggest U.S. power polluter
The new proposed power plant in Ohio could produce similar emissions to the James H. Miller Jr. coal-fired plant in Alabama of about 16.6...
Los Angeles Times·4 weeks ago
Regulatory·federal policy
Defunded by Trump, California’s clean energy hopes reach a crossroads in Los Angeles
The Trump Administration pulled $1.2 billion California's clean energy funding. Los Angeles still wants to retrofit Scattergood for...
Trump Administration (regulator)California (other)
CalMatters·4 months ago
Regulatory·state puc
Newsom killed 123 bills this year. Here’s what his vetoes say about power in Sacramento
Keeping up with your California representatives felt impossible before. Now you can watch them like a hawk: Sign up for My Legislator,...
California (other)
CalMatters·5 months ago
Last updated 2026-03-26
View all 10 articles