Top Gun Energy Storage
San Diego Gas & Electric CompanySan Diego County
Top Gun Energy Storage is SDG&E’s 30 MW / 120 MWh lithium-ion battery installation at the Miramar site in San Diego. Its four-hour rating describes stored electricity and discharge power; it is separate from Miramar Energy Facility’s two natural-gas turbines. The August 2026 EIA inventory lists battery generator TGES as operating. SDG&E operates Top Gun with personnel based at Palomar Energy Center, while RES America performs most maintenance under a long-term service agreement.
Mapped infrastructure geometry associated with this asset.
EIA plant 61366 · Inventory for Aug 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| TGES | Batteries | Operating | 30 | 120 |
They share the Miramar site but are separate EIA plants. Top Gun is battery plant 61366, rated 30 MW / 120 MWh. Miramar Energy Facility is gas plant 56232, whose two combustion turbines have 106 MW of EIA nameplate capacity.
Source: EIA August 2026 generator inventory · as of 2026-08-01
SDG&E operates the battery with personnel based at Palomar Energy Center. Its June 2026 testimony identifies RES America as the provider performing most maintenance under a long-term service agreement.
Source: SDG&E June 2026 electric generation testimony · as of 2026-06
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| TGES | 30 MW 30 MW summer | Batteries Electricity used for energy storage · BA | Jun 2021 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
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Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
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Project milestones and public references behind the asset profile.
Decision 18-05-024 approved the 30 MW, four-hour utility-owned project. The decision listed December 31, 2019 as the expected online date, which was a forecast not met in actual execution.
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.
| Largest reported plants | Capacity | State | |
|---|---|---|---|
| Palomar Energy | 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 StorageCurrent | 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 portfolioRES reported that construction began in early 2020. SDG&E separately noted that the project broke ground in March 2020 and cited COVID-19 pandemic delays in battery container fabrication.
EIA-860 lists generator TGES with this operating date.
FERC's asset listing gives June 30, 2021 as the in-service date for Top Gun Energy Storage, plant 61366 / generator TGES.
RES and SDG&E announced that commercial operation had recently commenced. The announcement date is not presented as the exact date of commencement.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
They share the Miramar site but are separate EIA plants. Top Gun is battery plant 61366, rated 30 MW / 120 MWh. Miramar Energy Facility is gas plant 56232, whose two combustion turbines have 106 MW of EIA nameplate capacity.
SDG&E operates the battery with personnel based at Palomar Energy Center. Its June 2026 testimony identifies RES America as the provider performing most maintenance under a long-term service agreement.
Top Gun Energy Storage reports 30 MW battery storage of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Aug 2026.
Top Gun Energy Storage is a batteries facility in San Diego County, CA, participating in the CAISO market.
Top Gun Energy Storage is in San Diego County, CA, inside the CAISO balancing area.
Top Gun Energy Storage is operated by San Diego Gas & Electric Co according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Top Gun Energy Storage reported 35.1 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.
By capacity, Top Gun Energy Storage ranks #384 of 1,061 operating plants of the same technology nationally. It ranks #128 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.