Where is Neil Simpson II?

In Campbell County, Wyoming (WY). 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 Neil Simpson II?

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

Who owns Neil Simpson II?

EIA-860M names Black Hills Power, 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 Neil Simpson II LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Black Hills Power, 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 "Neil Simpson II LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Neil Simpson II still running?

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

Neil Simpson II

Neil Simpson II is a 130 MW coal power plant in Campbell County, Wyoming, operated by Black Hills Power, Inc.. EIA-860M lists 2 generating units here. Its units entered service between 1995 and 2000.

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: 130 MW; 116 MW net summer
Generating units: 2
In service: 1995–2000
EIA plant ID: 7504

Where it is

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County: Campbell County, Wyoming
Coordinates: 44.2856, -105.3833
Balancing authority: WACM
Sector: Electric Utility

Units, technology and status

Operator of record: Black Hills Power, Inc.
Primary energy source: Coal
Technologies: Conventional Steam Coal, Natural Gas Fired Combustion Turbine
Status: Operating

This site runs on more than one energy source. EIA-860M capacity splits: Coal 90 MW, Natural gas 40 MW. It is filed here under Coal, the source with the most capacity.

Every plant Black Hills Power, Inc. reports to EIA →

Neil Simpson II: FAQ

Where is Neil Simpson II?: In Campbell County, Wyoming (WY). 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 Neil Simpson II?: 130 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
Who owns Neil Simpson II?: EIA-860M names Black Hills Power, 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 Neil Simpson II LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Black Hills Power, 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 "Neil Simpson II LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Neil Simpson II still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.