# Mainland

ERCOT asset profile · https://askthegrid.com/assets/facilities/mainland

HEN Infrastructure, L.L.C. - Galveston County - ERCOT

Mainland is a 9.9 MW battery energy storage facility located in Galveston County, Texas, serving ERCOT's Houston congestion zone. The facility entered commercial operation in June 2024 and is owned and operated by HEN Infrastructure, L.L.C., with development and operations management by Hunt Energy Network. It is a distribution-level storage resource registered to participate in ERCOT energy and ancillary-services markets.

## Metrics

- **Nameplate capacity:** 9.9 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 67494 — plant-67494

## Facts

- **Technology:** Batteries
- **Operator:** HEN Infrastructure, L.L.C.

## Related parties

- **Owner / operator:** HEN Infrastructure, L.L.C. — Registered utility/transmission owner and power generation company ([source](https://huntenergynetwork.com/what-we-do/))
- **Financier / equity investor:** Manulife Investment Management — Equity partner for asset development ([source](https://www.manulifeim.com/))

## Sources

- [interchange.puc.texas.gov](http://interchange.puc.texas.gov/Documents/56822_74_1424039.PDF) — interchange.puc.texas.gov · authoritative — Source retained for exact-record publication review.
- [modo-content-service-prod.s3.amazonaws.com](http://modo-content-service-prod.s3.amazonaws.com/media/reports/2024/12/16/ERCOT_BESS_Database.csv) — modo-content-service-prod.s3.amazonaws.com · public_source — Source retained for exact-record publication review.
- [huntenergynetwork.com](https://huntenergynetwork.com/asset-development/) — huntenergynetwork.com · public_source — Source retained for exact-record publication review.
- [interchange.puc.texas.gov](https://interchange.puc.texas.gov/Documents/59141_387_1593982.PDF) — interchange.puc.texas.gov · authoritative — Source retained for exact-record publication review.
- [interxdata.com](https://interxdata.com/projects/mainland-eia-860-67494-mlndb/) — interxdata.com · public_source — Source retained for exact-record publication review.
- [prnewswire.com](https://www.prnewswire.com/news-releases/hunt-energy-network-announces-new-energy-storage-venture-301252928.html) — prnewswire.com · public_source — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/mainland
Website: [HEN Infrastructure, L.L.C.](https://huntenergynetwork.com/what-we-do/)

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