Kearny South Energy Storage
San Diego Gas & Electric CompanySan Diego County
Kearny South Energy Storage is SDG&E’s 10 MW / 40 MWh battery at its Kearny Mesa operations site in San Diego. It is one of two separately registered plants in the combined 20 MW / 80 MWh Kearny project. EIA lists South’s operating month as February 2022; SDG&E announced commercial operation of the combined project in March 2022. Combined-project equipment counts are not assigned to South alone.
Mapped infrastructure geometry associated with this asset.
EIA plant 64614 · Inventory for Aug 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| KSES | Batteries | Operating | 10 | 40 |
Kearny South is the 10 MW / 40 MWh plant registered as EIA 64614. SDG&E’s March 2022 announcement describes the combined Kearny project as 20 MW / 80 MWh, which also includes the separately registered North plant.
EIA’s August 2026 inventory records February 2022 as the operating month for South generator KSES. SDG&E’s later announcement states that the combined Kearny facility began commercial operation in March 2022. These are separately attributed reporting milestones.
Source: www.eia.gov exact-project record · 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 |
|---|---|---|---|---|
| KSES | 10 MW 10 MW summer | Batteries Electricity used for energy storage · BA | Feb 2022 | 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.
SDG&E launched a resource procurement solicitation to meet CPUC procurement requirements. The Kearny resource was subsequently selected from this solicitation.
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 portfolioCPUC Resolution E-5117 approved SDG&E's request to procure 144 megawatts of nameplate energy storage capacity. The Kearny utility-owned storage contract with Fluence was approved with an initial scheduled online date of August 1, 2021.
SDG&E reported that construction began in April 2021 on the two-system, 20 MW Kearny project at the Kearny Mesa operations center.
EIA-860 lists generator KSES with this operating date.
SDG&E’s March 29, 2022 announcement states that the combined 20 MW / 80 MWh Kearny project began commercial operation that month. The separately registered South generator has an EIA operating month of February 2022.
FERC records show the control-transfer date for Kearny South Energy Storage to San Diego Gas & Electric Company. SDG&E's testimony states it took ownership of the 10 MW/40 MWh Kearny North BESS and Kearny South BESS in Q1 2022.
The CPUC records a safety incident at Kearny South Energy Storage Facility.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Kearny South is the 10 MW / 40 MWh plant registered as EIA 64614. SDG&E’s March 2022 announcement describes the combined Kearny project as 20 MW / 80 MWh, which also includes the separately registered North plant.
EIA’s August 2026 inventory records February 2022 as the operating month for South generator KSES. SDG&E’s later announcement states that the combined Kearny facility began commercial operation in March 2022. These are separately attributed reporting milestones.
Kearny South Energy Storage reports 10 MW battery storage of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Aug 2026.
Kearny South Energy Storage is a batteries facility in San Diego County, CA, participating in the CAISO market.
Kearny South Energy Storage is in San Diego County, CA, inside the CAISO balancing area.
Kearny South 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.
Kearny South Energy Storage reported 5.6 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, Kearny South Energy Storage 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.