# Northport Power Station

NYISO power_plant · https://askthegrid.com/nyiso/assets/plant/northport-power-station

Northport Power Station is a natural-gas- and petroleum-liquids-fired generating station in Huntington, Suffolk County, New York, comprising four dual-fuel steam turbine-generator units and one onsite black-start combustion turbine. The facility is owned and operated by National Grid Generation LLC and historically supplied capacity and energy to the Long Island Power Authority under a power-supply agreement expiring April 30, 2028.

## Key facts

- Technology: Natural Gas Steam Turbine, Petroleum Liquids
- Power capacity: 1564 MW

## Grid and market context

- ISO/RTO: NYISO
- Balancing authority: NYISO

## Source-backed facts

- Technical.power mw: 1564 MW — en.wikipedia.org · confidence: review_required
- Operations.capacity factor 2005: 55.8 percent — lipower.org · confidence: review_required
- Operations.capacity factor 2019: 15.2 percent — lipower.org · confidence: review_required

## Timeline

- 1957 — LILCO acquires Northport site
  Long Island Lighting Company purchases Northport land.
  Source: publicpowerlipa.org (https://publicpowerlipa.org/timeline-history/)
- 1998-05-28 — LILCO generation assets acquired by KeySpan/MarketSpan
  LILCO's non-nuclear generation assets acquired by KeySpan Corporation.
  Source: documents.dps.ny.gov (http://documents.dps.ny.gov/public/Common/ViewDoc.aspx?DocRefId={00E5D295-0000-C027-BB1B-ED1813C57F4C})
- 2007-08-24 — National Grid acquires KeySpan Corporation
  National Grid plc acquires KeySpan Corporation.
  Source: nationalgrid.com (https://www.nationalgrid.com/sites/default/files/documents/ngy08-keyspancorpmarch2008.pdf)
- 2020-05-20 — Northport Repowering Feasibility Study completed
  LIPA completes feasibility study evaluating repowering scenarios for Northport.
  Source: lipower.org (https://www.lipower.org/wp-content/uploads/2020/05/5a.-Northport-Repowering-Study_2020.05.20-Secured.pdf)
- 2025-08-21 — Hydrogen linear-generator pilot announced
  National Grid Ventures announces 100%-hydrogen linear-generator demonstration project at Northport.
  Source: nationalgridus.com (https://nationalgridus.com/News/National-Grid-Ventures-to-Install-World-8217-s-First-100-Percent-Hydrogen-Fueled-Commercial-Linear-Generator-at-Northport-Power-Plant-)
- 2026-09 — Hydrogen generator expected operational
  Hydrogen linear-generator pilot expected to reach operational status.
  Source: nationalgridus.com (https://nationalgridus.com/News/National-Grid-Ventures-to-Install-World-8217-s-First-100-Percent-Hydrogen-Fueled-Commercial-Linear-Generator-at-Northport-Power-Plant-)

## Sources

- [documents.dps.ny.gov](http://documents.dps.ny.gov/public/Common/ViewDoc.aspx?DocRefId={00E5D295-0000-C027-BB1B-ED1813C57F4C}) — documents.dps.ny.gov · tier authoritative
- [en.wikipedia.org](https://en.wikipedia.org/wiki/Northport_Power_Station) — en.wikipedia.org · tier public_source
- [extapps.dec.ny.gov](https://extapps.dec.ny.gov/data/dar/afs/permits/prr_147260013000038_r2_1.pdf) — extapps.dec.ny.gov · tier authoritative
- [nationalgridus.com](https://nationalgridus.com/News/National-Grid-Ventures-to-Install-World-8217-s-First-100-Percent-Hydrogen-Fueled-Commercial-Linear-Generator-at-Northport-Power-Plant-) — nationalgridus.com · tier public_source
- [publicpowerlipa.org](https://publicpowerlipa.org/timeline-history/) — publicpowerlipa.org · tier public_source
- [lipower.org](https://www.lipower.org/wp-content/uploads/2020/05/5a.-Northport-Repowering-Study_2020.05.20-Secured.pdf) — lipower.org · tier public_source
- [nationalgrid.com](https://www.nationalgrid.com/sites/default/files/documents/ngy08-keyspancorpmarch2008.pdf) — nationalgrid.com · tier public_source

## Data quality

- The station's reported capacity varies by source and rating convention: the 2020 LIPA repowering study describes four 375 MW steam units plus a 16 MW turbine (total 1,516 MW), while current plant listings report four 387 MW steam units plus 16 MW (total 1,564 MW), and the 2012 NYSDEC permit describes four 385 MWe nominal units plus a 15 MWe turbine. The 2020 LIPA repowering feasibility study evaluated multiple scenarios for repowering and retirement but did not authorize or complete a repowering or retirement project. No completed repowering or unit retirement is documented as of the latest status evidence (April 2026). The April 30, 2028 PSA expiration is a contractual milestone identifying when LIPA's output entitlement reverts to National Grid; this is not a confirmed retirement date, though the station may face retirement or fuel-transition requirements under New York's Climate Leadership and Community Protection Act (CLCPA) mandate for 100% carbon-free electricity by 2040. The hydrogen linear-generator pilot announced August 21, 2025, with September 2026 expected operational date, is an adjacent project and not part of the legacy generating-station configuration. No completed unit retirement is documented. The earliest contractual ramp-down option date was May 1, 2021, but no confirmation of actual retirement is provided in the available evidence.

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Canonical page: https://askthegrid.com/nyiso/assets/plant/northport-power-station

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