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.
Answers use this researched asset profile with live NYISO data. Ask about ownership, equipment, project history, or current grid context.
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June 2026 preliminary EIA inventory; 1 generator record.
June 2026 preliminary EIA inventory; status OP.
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| BEH | 5 MW 5 MW summer | Batteries Electricity used for energy storage · BA | Aug 2018 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Project milestones and public references behind the asset profile.
Lithium-ion battery; June 2026 preliminary EIA inventory.
EIA-923 reports gross generation and net grid exchange for storage plants. Gross generation is shown as a discharge proxy; it is not a cycle count or conventional capacity factor.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
East Hampton Energy Storage Center has a reported capacity of 5 MW and an energy capacity of 40 MWh (June 2026 preliminary EIA inventory). Source: EIA Form 860M.
East Hampton Energy Storage Center is a Lithium-ion battery facility in Suffolk County, NY, participating in the NYISO market.
East Hampton Energy Storage Center is in Suffolk County, NY, inside the NYISO balancing area.
East Hampton Energy Storage Center is operated by East Hampton Energy Storage Center, LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
East Hampton Energy Storage Center reports a commercial operation date of 2018-08. Source: EIA Form 860M.
East Hampton Energy Storage Center reported 3.5 GWh over the twelve months to 2024-12. For a storage plant this is reported gross generation — a discharge proxy, not a cycle count or a conventional capacity factor.
By capacity, East Hampton Energy Storage Center ranks #600 of 962 operating plants of the same technology nationally. It ranks #9 of 50 in NY.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.