In Suffolk County, New York (NY). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.

How big is Northport?

2 GW of nameplate capacity across 5 units, as of the EIA-860M release for 2026-07.

EIA-860M names National Grid Generation LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.

Is this the same as Northport LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — National Grid Generation LLC here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Northport LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Northport still running?

EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.

Northport

Northport is a 2 GW natural gas power plant in Suffolk County, New York, operated by National Grid Generation LLC. EIA-860M lists 5 generating units here, inside NYISO. Its units entered service between 1967 and 1977.

As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m

Nameplate capacity: 1,564 MW; 1,604 MW net summer
Generating units: 5
In service: 1967–1977
EIA plant ID: 2516

Where it is

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County: Suffolk County, New York
Coordinates: 40.9236, -73.3423
Balancing authority: NYIS
Sector: Electric Utility

Units, technology and status

Operator of record: National Grid Generation LLC
Primary energy source: Natural gas
Technologies: Natural Gas Steam Turbine, Petroleum Liquids
Status: Operating

This site runs on more than one energy source. EIA-860M capacity splits: Natural gas 2 GW, Petroleum 16 MW. It is filed here under Natural gas, the source with the most capacity.

Every plant National Grid Generation LLC reports to EIA →

Northport: FAQ

Where is Northport?: In Suffolk County, New York (NY). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
How big is Northport?: 2 GW of nameplate capacity across 5 units, as of the EIA-860M release for 2026-07.
Who owns Northport?: EIA-860M names National Grid Generation LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
Is this the same as Northport LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — National Grid Generation LLC here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Northport LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Northport still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.