# Tanzanite Storage

ERCOT asset profile · https://askthegrid.com/assets/facilities/tanzanite-storage

Tanzanite Energy Storage LLC - Henderson County - ERCOT

Tanzanite Storage is a 283.2 MW battery energy storage facility located at 1315 County Road 318, Athens, Texas, in Henderson County. The facility is owned and operated by Tanzanite Energy Storage LLC, an indirect subsidiary of ENGIE North America Inc. through BRP Intermediateco I LLC. During development, the project was described as approximately 257 MW/514 MWh with a two-hour storage duration. The facility was commercially operational as of November 2025.

## Metrics

- **Nameplate capacity:** 283.2 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 69026 — plant-69026

## Facts

- **Technology:** Batteries
- **Operator:** Tanzanite Energy Storage LLC

## Related parties

- **Owner / operator:** Tanzanite Energy Storage LLC — Owner and operator
- **Parent company:** BRP Intermediateco I LLC — Indirect parent
- **Parent company:** ENGIE North America Inc. — Corporate parent of BRP Intermediateco I LLC ([source](https://www.engie-na.com/))

## Sources

- [interchange.puc.texas.gov](https://interchange.puc.texas.gov/Documents/35077_1934_1430099.PDF) — interchange.puc.texas.gov · authoritative — Source retained for exact-record publication review.
- [interchange.puc.texas.gov](https://interchange.puc.texas.gov/Documents/54974_162_1425772.PDF) — interchange.puc.texas.gov · authoritative — Source retained for exact-record publication review.
- [mbrweb.ferc.gov](https://mbrweb.ferc.gov/SearchlkpEIA/Index?page=853) — mbrweb.ferc.gov · authoritative — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/tanzanite-storage

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