Pala Gomez Creek BESS
San Diego Gas & Electric Company (SDG&E)San Diego County
Pala-Gomez Creek BESS is SDG&E’s battery at its storage yard beside Pala Substation. EIA’s August 2026 preliminary inventory lists 10 MW of power, 10 MWh of nameplate energy, and a March 2024 operating month. Mitsubishi Power’s March 2022 order announcement describes a 10 MW / 60 MWh, six-hour project design. The earlier supplier design and later EIA inventory are separate reported ratings; their difference does not establish a completed modification.
Mapped infrastructure geometry associated with this asset.
EIA plant 66280 · Inventory for Aug 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| 1 | Batteries | Operating | 10 | 10 |
Mitsubishi Power’s March 17, 2022 announcement specifies a 10 MW / 60 MWh project design, equivalent to six hours at rated power. EIA’s later August 2026 inventory reports 10 MW / 10 MWh. Both source-specific ratings are retained; their difference alone does not prove an equipment change.
Source: Mitsubishi Power exact-project order announcement; later EIA rating shown separately · as of 2022-03-17
The CPUC’s 2022 approval identifies an SDG&E utility-owned project at the Pala battery yard and Mitsubishi as EPC counterparty. EIA’s August 2026 inventory lists SDG&E as operator and March 2024 as the operating month.
The August 2026 preliminary workbook lists generator 1 at plant 66280 as operating, with 10 MW of nameplate power and 10 MWh of nameplate energy. Its operating month is March 2024. That inventory rating is separate from Mitsubishi’s earlier 60 MWh design announcement.
Source: EIA August 2026 preliminary generator inventory · as of 2026-08
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1 | 10 MW 10 MW summer | Batteries Electricity used for energy storage · BA | Mar 2024 | 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.
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.
SDG&E filed Advice Letter 3913-E seeking CPUC approval of EPC contracts for three utility-owned energy storage projects totaling 161 MW, including Pala-Gomez Creek (10 MW, Mitsubishi).
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 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 CPUC issued Resolution E-5193 approving SDG&E's EPC contracts with Mitsubishi (10 MW) and Fluence (20 MW), and a BOT agreement with ConEdDev (131 MW). Resolution authorizes cost recovery via the Cost Allocation Mechanism (CAM).
Mitsubishi Power announced its order for the 10 MW / 60 MWh Emerald storage solution for SDG&E's Pala-Gomez Creek Energy Storage Project. Turnkey scope includes design, engineering, procurement, construction, and a 10-year long-term service agreement. System scheduled to be online in early 2023.
EIA-860 lists generator 1 with this operating date.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Mitsubishi Power’s March 17, 2022 announcement specifies a 10 MW / 60 MWh project design, equivalent to six hours at rated power. EIA’s later August 2026 inventory reports 10 MW / 10 MWh. Both source-specific ratings are retained; their difference alone does not prove an equipment change.
The CPUC’s 2022 approval identifies an SDG&E utility-owned project at the Pala battery yard and Mitsubishi as EPC counterparty. EIA’s August 2026 inventory lists SDG&E as operator and March 2024 as the operating month.
The August 2026 preliminary workbook lists generator 1 at plant 66280 as operating, with 10 MW of nameplate power and 10 MWh of nameplate energy. Its operating month is March 2024. That inventory rating is separate from Mitsubishi’s earlier 60 MWh design announcement.
Pala Gomez Creek BESS reports 10 MW battery storage of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Aug 2026.
Pala Gomez Creek BESS is a batteries facility in San Diego County, CA, participating in the CAISO market.
Pala Gomez Creek BESS is in San Diego County, CA, inside the CAISO balancing area.
Pala Gomez Creek BESS is operated by San Diego Gas & Electric Co according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Pala Gomez Creek BESS reported 20.3 GWh over the twelve months to 2024-12. For a storage plant this is reported gross generation — a discharge proxy, not a cycle count or a conventional capacity factor.
By capacity, Pala Gomez Creek BESS ranks #488 of 1,061 operating plants of the same technology nationally. It ranks #154 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.