Where is Mountain Lake?

In Cottonwood County, Minnesota (MN). 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 Mountain Lake?

6 MW of nameplate capacity across 4 units, as of the EIA-860M release for 2026-07.

Who owns Mountain Lake?

EIA-860M names City of Mountain Lake - (MN) 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 Mountain Lake LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — City of Mountain Lake - (MN) 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 "Mountain Lake LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Mountain Lake still running?

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

Mountain Lake

Mountain Lake is a 6 MW oil-fired power plant in Cottonwood County, Minnesota, operated by City of Mountain Lake - (MN). EIA-860M lists 4 generating units here, inside MISO. Its units entered service between 1959 and 2007.

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: 6.1 MW; 6 MW net summer
Generating units: 4
In service: 1959–2007
EIA plant ID: 1998

Where it is

Loading map…

County: Cottonwood County, Minnesota
Coordinates: 43.9405, -94.9434
Balancing authority: MISO
Sector: Electric Utility

Units, technology and status

Operator of record: City of Mountain Lake - (MN)
Primary energy source: Petroleum
Technologies: Natural Gas Internal Combustion Engine, Onshore Wind Turbine, Petroleum Liquids
Status: Operating

This site runs on more than one energy source. EIA-860M capacity splits: Petroleum 4 MW, Natural gas 1 MW, Wind 1 MW. It is filed here under Petroleum, the source with the most capacity.

Every plant City of Mountain Lake - (MN) reports to EIA →

Mountain Lake: FAQ

Where is Mountain Lake?: In Cottonwood County, Minnesota (MN). 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 Mountain Lake?: 6 MW of nameplate capacity across 4 units, as of the EIA-860M release for 2026-07.
Who owns Mountain Lake?: EIA-860M names City of Mountain Lake - (MN) 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 Mountain Lake LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — City of Mountain Lake - (MN) 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 "Mountain Lake LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Mountain Lake still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.