Lange Generating Station
Natural gas power plant · Pennington County, South Dakota
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combustion Turbine
- Operator
- Black Hills Power, Inc.
- County
- Pennington County
- Generating units
- 1
- Share of state capacity
- 0.52%
- Rank among natural gas plants in South Dakota
- #8 of 11
- EIA plant code
- 55478
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 0001 | Natural Gas Fired Combustion Turbine | 40 MW | 34 MW | 2002 | Operating |
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 South Dakota
| Buffalo Ridge I LLC | Wind | 50 MW |
| South Dakota Wind Energy Cente | Wind | 41 MW |
| Rolling Thunder Wind Farm Hybrid | Wind | 26 MW |
| Lake Preston | Other | 24 MW |
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 40 MW solar plant and a 40 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 South Dakota power plants · What South Dakota actually generates