Where is RockGen Energy Center?

In Dane County, Wisconsin (WI). 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 RockGen Energy Center?

561 MW of nameplate capacity across 3 units, as of the EIA-860M release for 2026-07.

Who owns RockGen Energy Center?

EIA-860M names Dairyland Power Coop 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 RockGen Energy Center LLC?

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

Is RockGen Energy Center still running?

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

RockGen Energy Center

RockGen Energy Center is a 561 MW natural gas power plant in Dane County, Wisconsin, operated by Dairyland Power Coop. EIA-860M lists 3 generating units here, inside MISO. Its units entered service in 2001.

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: 561 MW; 489 MW net summer
Generating units: 3
In service: 2001
EIA plant ID: 55391

Where it is

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County: Dane County, Wisconsin
Coordinates: 42.9767, -89.0492
Balancing authority: MISO
Sector: Electric Utility

Units, technology and status

Operator of record: Dairyland Power Coop
Primary energy source: Natural gas
Technologies: Natural Gas Fired Combustion Turbine
Status: Operating

Every plant Dairyland Power Coop reports to EIA →

RockGen Energy Center: FAQ

Where is RockGen Energy Center?: In Dane County, Wisconsin (WI). 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 RockGen Energy Center?: 561 MW of nameplate capacity across 3 units, as of the EIA-860M release for 2026-07.
Who owns RockGen Energy Center?: EIA-860M names Dairyland Power Coop 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 RockGen Energy Center LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Dairyland Power Coop 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 "RockGen Energy Center LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is RockGen Energy Center still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.