Where is TNSG North Plant?

In North Slope County, Alaska (AK). 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 TNSG North Plant?

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

Who owns TNSG North Plant?

EIA-860M names TDX North Slope Generating Inc. 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 TNSG North Plant LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — TDX North Slope Generating Inc. 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 "TNSG North Plant LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is TNSG North Plant still running?

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

TNSG North Plant

TNSG North Plant is a 26 MW natural gas power plant in North Slope County, Alaska, operated by TDX North Slope Generating Inc.. EIA-860M lists 5 generating units here. Its units entered service between 2008 and 2014.

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: 25.7 MW; 23.1 MW net summer
Generating units: 5
In service: 2008–2014
EIA plant ID: 58278

Where it is

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County: North Slope County, Alaska
Coordinates: 70.2353, -148.3836
Balancing authority: Not reported
Sector: Electric Utility

Units, technology and status

Operator of record: TDX North Slope Generating Inc.
Primary energy source: Natural gas
Technologies: Natural Gas Fired Combustion Turbine, Petroleum Liquids
Status: Operating (4) · Standby/Backup (1)

This site runs on more than one energy source. EIA-860M capacity splits: Natural gas 25 MW, Petroleum 0 MW. It is filed here under Natural gas, the source with the most capacity.

Every plant TDX North Slope Generating Inc. reports to EIA →

TNSG North Plant: FAQ

Where is TNSG North Plant?: In North Slope County, Alaska (AK). 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 TNSG North Plant?: 26 MW of nameplate capacity across 5 units, as of the EIA-860M release for 2026-07.
Who owns TNSG North Plant?: EIA-860M names TDX North Slope Generating Inc. 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 TNSG North Plant LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — TDX North Slope Generating Inc. 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 "TNSG North Plant LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is TNSG North Plant still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.