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Wygen III

Coal power plant · Campbell County, Wyoming

Nameplate capacity
116 MW
Rank in Wyoming
#28
of 71 plants
In service since
2010
April 2010

Details

Primary fuel
Coal
Technology
Conventional Steam Coal
Operator
Black Hills Power, Inc.
County
Campbell County
Generating units
1
Share of state capacity
0.91%
Rank among coal plants in Wyoming
#6 of 10
EIA plant code
56596

Generating units

Individual generating units at Wygen III
UnitTechnologyNameplateSummerOnlineStatus
5Conventional Steam Coal116 MW100 MW2010Operating

Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.

Similarly sized plants in Wyoming

About this data

From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 116 MW solar plant and a 116 MW nuclear plant have the same entry here and produce very different amounts of electricity.

“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Wyoming power plants · What Wyoming actually generates