Power plants operated by Basin Electric Power Coop
Basin Electric Power Coop operates 16 power plants in the 2025 EIA-860 data, with 6,343 MW of nameplate capacity, the 40th-largest fleet among the 5,826 operators on file. They are spread over four states: North Dakota, Wyoming, South Dakota and Montana. Coal is 62% of the capacity; the largest site is Laramie River Station. Its oldest working unit dates from 1966, at Leland Olds. Units added from 2020 to 2025 total 665 MW.
- Coal3,957 MW62%
- Natural gas1,969 MW31%
- Wind282 MW4.4%
- Oil and petroleum135 MW2.1%
Capacity by decade it came online
CoalNatural gasOil and petroleumWind
Above the line: capacity operating in 2025. Below: capacity retired at these plants.
Plants
| Plant | State | Runs on | Capacity | First unit |
|---|---|---|---|---|
| Laramie River Station | Wyoming | Coal | 1,863 MW | 1981 |
| Antelope Valley | North Dakota | Coal | 954 MW | 1984 |
| Pioneer Generation Station | North Dakota | Natural gas | 897 MW | 2013 |
| Leland Olds | North Dakota | Coal | 656 MW | 1966 |
| Dry Fork Station | Wyoming | Coal | 484 MW | 2011 |
| Lonesome Creek Station | North Dakota | Natural gas | 363 MW | 2013 |
| Deer Creek Station | South Dakota | Natural gas | 324 MW | 2012 |
| Groton Generation Station | South Dakota | Natural gas | 216 MW | 2006 |
| Prairie Winds SD1 | South Dakota | Wind | 162 MW | 2011 |
| Spirit Mound | South Dakota | Oil and petroleum | 135 MW | 1978 |
| Prairie Winds ND1 | North Dakota | Wind | 116 MW | 2009 |
| Culbertson Generation Station | Montana | Natural gas | 108 MW | 2010 |
| Barber Creek | Wyoming | Natural gas | 22.5 MW | 2002 |
| Hartzog | Wyoming | Natural gas | 22.5 MW | 2002 |
| Arvada | Wyoming | Natural gas | 15 MW | 2002 |
| Minot Wind Project | North Dakota | Wind | 4.5 MW | 2009 |