Palomar Energy
San Diego Gas & Electric CompanySan Diego County
Palomar Energy Center is an SDG&E-owned and operated combined-cycle natural-gas plant in Escondido, California. SDG&E lists the facility at 588 MW in its 2026 resource forecast; the EIA inventory shown here records 559 MW of generator nameplate capacity. Two combustion turbines feed heat-recovery steam generators and a steam turbine, with a 230 kV switchyard connecting the site to the grid.
Mapped infrastructure geometry associated with this asset.
Natural Gas Fired Combined Cycle
The CEC lists Palomar Energy Center as operational, and SDG&E includes the plant in its 2026 owned-generation portfolio.
230 kV · San Diego Gas & Electric
EIA plant 55985 · Inventory for Sep 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| CTG1 | Natural Gas Fired Combined Cycle | Operating | 165 | Unknown |
| CTG2 | Natural Gas Fired Combined Cycle | Operating | 165 | Unknown |
| STG | Natural Gas Fired Combined Cycle | Operating | 229 | Unknown |
Yes. SDG&E owns and operates Palomar Energy Center in Escondido. Its 2026 resource forecast includes Palomar among utility-owned dispatchable generation.
Source: SDG&E 2026 ERRA resource forecast · as of 2025-05-15
The CEC lists Palomar as operational, and SDG&E includes it in its 2026 generation portfolio. These sources do not establish a 2026 plant retirement.
Source: CEC Palomar Energy Project
The figures describe different rating bases and reporting vintages: SDG&E uses 588 MW in its 2026 portfolio forecast, the CEC project page describes the original 500 MW project, and this page retains the EIA generator-nameplate total of 559 MW.
Source: SDG&E 2026 ERRA resource forecast · as of 2025-05-15
Similar plants ranked by technology, capacity, and distance.
Current generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| CTG1 | 165 MW 179.6 MW summer | Natural Gas Fired Combined Cycle CT | Oct 2005 | Operating |
| CTG2 | 165 MW 179.8 MW summer | Natural Gas Fired Combined Cycle CT | Nov 2005 | Operating |
| STG | 229 MW 222 MW summer | Natural Gas Fired Combined Cycle CA | Jan 2006 | 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.
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Project milestones and public references behind the asset profile.
Palomar Energy, LLC, a wholly owned subsidiary of Sempra Energy Resources, filed the Application for Certification for the Palomar Energy Project.
CAISO
CAISO · San Diego County
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
| Largest reported plants | Capacity | State | |
|---|---|---|---|
| Palomar EnergyCurrent | 559 MW | CA | |
| Miramar Energy Facility | 106 MW | CA | |
| Cuyamaca Peak Energy Plant | 48.7 MW | CA | |
| Fallbrook Energy Storage | 40 MW | CA | |
| Top Gun Energy Storage | 30 MW | CA | |
| Melrose BESS | 20 MW | CA | |
| Elliott Energy Storage | 10 MW | CA | |
| Boulevard Energy Storage | 10 MW | CA |
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
View full reporting portfolioThe California Energy Commission certified the Palomar Energy Project.
SDG&E and Palomar Energy, LLC entered into the Turnkey Acquisition Agreement under which SDG&E was obligated to acquire and operate the facility.
The CPUC approved the Turnkey Acquisition Agreement between SDG&E and Palomar Energy, LLC.
EIA-860 lists generator CTG1 with this operating date.
EIA-860 lists generator CTG2 with this operating date.
EIA-860 lists generator STG with this operating date.
The Palomar Energy Center began commercial operation.
The CEC approved the Advanced Gas Path upgrade for the two existing GE Frame 7FA combustion turbines; the 2024 annual report records the project as completed in 2021.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Yes. SDG&E owns and operates Palomar Energy Center in Escondido. Its 2026 resource forecast includes Palomar among utility-owned dispatchable generation.
The CEC lists Palomar as operational, and SDG&E includes it in its 2026 generation portfolio. These sources do not establish a 2026 plant retirement.
The figures describe different rating bases and reporting vintages: SDG&E uses 588 MW in its 2026 portfolio forecast, the CEC project page describes the original 500 MW project, and this page retains the EIA generator-nameplate total of 559 MW.
Palomar Energy reports 559 MW natural gas of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.
Palomar Energy is a Natural Gas Fired Combined Cycle facility in San Diego County, CA, participating in the CAISO market.
Palomar Energy is in San Diego County, CA, inside the CAISO balancing area.
Palomar Energy is operated by San Diego Gas & Electric Co according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Palomar Energy reported 1,157.5 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.
Palomar Energy interconnects at Palomar Energy, on the San Diego Gas & Electric system.
By capacity, Palomar Energy ranks #280 of 540 operating plants of the same technology nationally. It ranks #21 of 64 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.