Borrego Springs Energy Storage
San Diego Gas & Electric CompanySan Diego County
Borrego Springs Energy Storage comprises SDG&E’s SES1 and SES2 battery units at the Borrego Springs community microgrid in San Diego County. The August 2026 EIA inventory lists both units as operating: SES1 is 0.5 MW and SES2 is 1 MW, for 1.5 MW of nameplate capacity. SDG&E’s storage schedule assigns the units 1.5 MWh and 3 MWh respectively, totaling 4.5 MWh. These batteries support the community microgrid and are distinct from the later Dark Sky battery addition and the broader microgrid’s combined equipment.
EIA plant 60565 · Inventory reporting month unavailable.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| SES1 | Batteries | Operating | 0.5 | Unknown |
| SES2 | Batteries | Operating | 1 | Unknown |
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| SES1 | 0.5 MW 0.5 MW summer | Batteries Electricity used for energy storage · BA | Dec 2012 | Operating |
| SES2 | 1 MW 1 MW summer | Batteries Electricity used for energy storage · BA | Feb 2014 | 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.
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Project milestones and public references behind the asset profile.
SES1 (0.5 MW / 1.5 MWh) substation energy-storage unit entered commercial operation at Borrego Substation.
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 | |
|---|---|---|---|
| Vanadium Redox Flow Battery Plant | 2 MW | CA | |
| Borrego Springs Energy StorageCurrent | 1.5 MW | CA | |
| Ortega Highway Energy Storage | 1 MW | CA | |
| Pala Energy Storage Yard | 1 MW | CA | |
| Canyon Crest Academy | 1 MW | CA |
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
View full reporting portfolioSES2 (1.0 MW / 3.0 MWh) substation energy-storage unit entered commercial operation at Borrego Substation.
SDG&E awarded a $4.5 million federal grant from the U.S. Department of Energy Solar Energy Technologies Office (SETO) to support the broader Borrego Springs Microgrid transition to 100% renewable energy.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Borrego Springs Energy Storage reports 1.5 MW battery storage of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Form 860M.
Borrego Springs Energy Storage is a batteries facility in San Diego County, CA, participating in the CAISO market.
Borrego Springs Energy Storage is in San Diego County, CA, inside the CAISO balancing area.
Borrego Springs Energy Storage is operated by SDGE Batteries according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Borrego Springs Energy Storage reported 168 MWh 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, Borrego Springs Energy Storage ranks #899 of 1,061 operating plants of the same technology nationally. It ranks #202 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.