# East Hampton Energy Storage Center

NYISO asset profile · https://askthegrid.com/assets/facilities/east-hampton-energy-storage-center

Eight-hour battery serving eastern Long Island

East Hampton Energy Storage Center is an operating 5 MW/40 MWh, eight-hour lithium-ion battery at 3 Cove Hollow Road in East Hampton. NextEra developed the project and holds 50% through an affiliate; a National Grid affiliate holds the other 50%, and LIPA purchases capacity and related services under a contract running through 2038.

## Profile

- **Current registry:** The June 2026 preliminary EIA inventory lists East Hampton Energy Storage Center LLC as operator and status OP.

## Metrics

- **Storage nameplate:** 5 MW / 40 MWh — June 2026 preliminary EIA inventory; 1 generator record.

## Facts

- **EIA operator:** East Hampton Energy Storage Center LLC — June 2026 preliminary EIA inventory; status OP.
- **Location:** 3 Cove Hollow Road, East Hampton · Suffolk · NY
- **Technology:** Lithium-ion battery
- **Operating records:** 2018-08

## Related parties

- **50% owner:** National Grid affiliate — May 24, 2017 board meeting minutes ([source](https://www.lipower.org/wp-content/uploads/2017/03/Minutes20of20May202420201720Board20Mtg.FINAL1_.pdf))
- **capacity and services purchaser:** Long Island Power Authority — May 24, 2017 board meeting minutes ([source](https://www.lipower.org/wp-content/uploads/2017/03/Minutes20of20May202420201720Board20Mtg.FINAL1_.pdf))

## Sources

- [June 2026 EIA-860M generator inventory](https://www.eia.gov/electricity/data/eia860m/xls/june_generator2026.xlsx) — U.S. Energy Information Administration · authoritative — Current generator capacity, technology, operating status, operator, and service-date records.

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