Palomar Energy — Plant Summary
- EIA Plant ID
- 55985
- Capacity
- 559 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Fired Combined Cycle
- Status
- Operating
- Location
- San Diego, CA
- Operating Since
- 2005
- Generators
- 3
- Operator
- San Diego Gas & Electric Co
- Parent Company
- Sempra Energy
- Annual Generation
- 1,469,615 MWh
- Capacity Factor
- 30.0%
- Balancing Authority
- California Independent System Operator
- ISO/RTO
- CAISO
- NERC Region
- WECC
Palomar Energy
OperatingNatural Gas
Ranked #27 of 306 Natural Gas plants in CA#436 of 2009 nationally
559 MW Natural Gas operating in San Diego, CA — California Independent System Operator
EIAWD
559 MW
Nameplate Capacity
3
Generators
units
Natural Gas Fired Combined Cycle
Technology
2005
Operating Since
Location
Coordinates
33.1197, -117.1178
County
San Diego, CA
Nearby Plants
- Enterprise BESSBESS54.1 MW · 0.2 km
- CalPeak Power Enterprise Peaker PlantNatural Gas58.9 MW · 0.3 km
- Escondido Energy StorageBESS30 MW · 0.6 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | San Diego Gas & Electric Co | San Diego Gas & Electric | — |
| Owner(s) | San Diego Gas & Electric Co | Sempra Energy | — |
| Status | Operating | — | — |
Ownership Chain
About
Palomar Energy is a 559 MW natural gas-fired combined cycle power plant located in San Diego County, California. The plant began operating in 2005 and consists of 3 generators. It is owned by Sempra Energy and operated by San Diego Gas & Electric Co. The plant operates within the California Independent System Operator (CAISO) balancing authority, within the Western Electricity Coordinating Council (WECC) NERC region.
In the latest year of reported generation data, Palomar Energy produced 1,469,615 MWh of electricity, achieving a capacity factor of 30.0%. According to available data, the installed cost of the plant was $1,048.64 per kW. Palomar Energy ranks as the 27th largest power plant out of 76 in California, and 440th out of 945 nationally.
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
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
62.5K MWh
Latest Month
1.5M MWh
Annual Generation
30.0%
Capacity Factor
Jan 2023 – Dec 2025
Financial DataBeta
Source: FERC Form 1HIGH
$1,101/kW
Installed Cost
$58.4/MWh
Operating Cost
San Diego Gas & Electric Company
Reporting Utility
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Pricing & Market Data
HIGH confidenceMarket Position
ISO/RTO Market
CAISO
LMP Node
PALOMR_2_PL1X3-APND
Pricing Hub
TH_SP15_GEN-APND
Location Type
Aggregated Node
Node Source
EIA-860 direct report
News & Articles (10)Beta
Regulatory·state puc
Nine Ways California’s Climate Agenda Is Driving Up the Cost of Living
Last November, Governor Gavin Newsom, playing faux President, traveled to the United Nations climate summit in Belém, Brazil,...
Gavin Newsom (other)
California Globe·Yesterday
Industry·corporate
DTECH 2026 Conference: Grid Innovation & Keynotes - News and Statistics
The DTECH 2026 conference, the premier annual event for transmission and distribution, is now underway in San Diego, California,...
IndexBox·4 weeks ago
General
SDG&E Expands Energy Storage Capabilities to Enhance Grid Resiliency and Affordability for Customers
SAN DIEGO, March 14, 2025 /PRNewswire/ -- San Diego Gas & Electric (SDG&E) announced today the California Public Utilities Commission (CPUC)...
Sempra·1 years ago
Industry·technology
Why this battery storage plant between Escondido and San Marcos has some residents upset
A renewable energy company that wants to construct a battery storage project between San Marcos and Escondido has scaled back the footprint...
San Diego Union-Tribune·1 years ago
Last updated 2026-03-14
View all 10 articles