# Borrego Springs Energy Storage

CAISO asset profile · https://askthegrid.com/assets/facilities/borrego-springs-energy-storage

San Diego Gas & Electric Company - San Diego County - CAISO

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.

## Metrics

- **Nameplate capacity:** 1.5 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 60565 — plant-60565

## Facts

- **Technology:** Batteries
- **Operator:** San Diego Gas & Electric Company
- **Operating status:** Operating

## Related parties

- **Owner / operator:** San Diego Gas & Electric Company — Project Owner and Operator ([source](https://www.sdge.com/))
- **Equipment supplier:** Saft — Battery Manufacturer ([source](https://saft.com/en/market-sectors/energy-storage))
- **Equipment supplier:** Saft — Battery Manufacturer ([source](https://saft.com/en/market-sectors/energy-storage))
- **Balancing authority / market operator:** California Independent System Operator (CAISO) — Balancing Authority and Market Operator ([source](https://www.caiso.com/))

## Sources

- [mbrweb.ferc.gov](https://mbrweb.ferc.gov/SearchlkpEIA/Index?page=408) — mbrweb.ferc.gov · authoritative — Source retained for exact-record publication review.
- [sdge.com](https://www.sdge.com/) — sdge.com · public_source — Source retained for exact-record publication review.
- [sdge.com](https://www.sdge.com/interconnection-information-and-map) — sdge.com · public_source — Source retained for exact-record publication review.
- [sdge.com](https://www.sdge.com/sites/default/files/A_16-03-003_SDGE_s_Application_for_Approval_of_its_Energy.pdf) — sdge.com · public_source — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/borrego-springs-energy-storage
Website: [San Diego Gas & Electric Company](https://www.sdge.com/)

Source: Ask the Grid — https://askthegrid.com/