# Cathode (Hinson) BESS

CAISO asset profile · https://askthegrid.com/assets/facilities/cathode-hinson-bess

Southern California Edison Co - Los Angeles County - CAISO

Cathode (Hinson) BESS is Southern California Edison's 200 MW utility-owned battery energy storage system located at the Hinson Substation in Long Beach, Los Angeles County. It is one of three sites in SCE's Reliability Utility-Owned Energy Storage (RUOES) program. The facility is designed to store electricity and provide full power output for up to four hours when fully charged, serving as a distribution-level reliability resource. The plant comprises two 100 MW battery units, CATH1 and CATH2, with an aggregate energy storage capacity of 800 MWh. The system uses CATL's EnerC containerized liquid-cooling lithium-ion battery technology and is integrated with FlexGen's HybridOS energy management platform. Ameresco served as the turnkey engineering, procurement, construction, and maintenance contractor.

## Metrics

- **Nameplate capacity:** 200 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 65457 — plant-65457

## Facts

- **Technology:** Batteries
- **Operator:** Southern California Edison Co

## Related parties

- **Owner / operator:** Southern California Edison Co — utility owner and operator ([source](https://www.edison.com/))
- **EPC contractor / construction contractor / O&M provider:** Ameresco, Inc. — EPCM contractor ([source](https://www.ameresco.com/))
- **Equipment supplier:** Contemporary Amperex Technology Co., Limited (CATL) — battery technology and equipment supplier ([source](https://www.catl.com/en/))
- **Parent company:** Edison International — parent company ([source](https://www.edison.com/))

## Sources

- [ciwqs.waterboards.ca.gov](http://ciwqs.waterboards.ca.gov/ciwqs/readOnly/CiwqsReportServlet?placeID=S901624&reportName=facilityAtAGlance) — ciwqs.waterboards.ca.gov · authoritative — Source retained for exact-record publication review.
- [ir.ameresco.com](http://ir.ameresco.com/sec-filings/all-sec-filings/content/0001488139-21-000128/0001488139-21-000128.pdf) — ir.ameresco.com · public_source — Source retained for exact-record publication review.
- [mbrweb.ferc.gov](http://mbrweb.ferc.gov/SearchlkpEIA/Index?page=725) — mbrweb.ferc.gov · authoritative — Source retained for exact-record publication review.
- [ir.ameresco.com](https://ir.ameresco.com/news-events/press-releases/detail/512/ameresco-provides-southern-california-edison-sce-project) — ir.ameresco.com · public_source — Source retained for exact-record publication review.

---

Canonical page: https://askthegrid.com/assets/facilities/cathode-hinson-bess
Website: [Southern California Edison Co](https://www.edison.com/)

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