Lange Generating Station
Natural gas power plant in Pennington County, South Dakota. 40 MW of nameplate capacity across 1 generator, operated by Black Hills Power, Inc..
Also known as Lange Gas Turbines · EIA plant 55478
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Key facts
- Capacity
- 40 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- March 2002First generator online
- Operator
- Black Hills Power, Inc.EIA operator ID 19545
- Grid
- WACMBalancing authority WACM
- Price nodes
- None linkedNo verified ISO node
- Location
- Pennington County, SD44.1218, −103.2641
- EIA plant ID
- 55478EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Lange produces
Free · EIA-923Net generation, 2025
144 GWh
144,457 MWh, final
Capacity factor, 2025
41.2%
2024: 32.8%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
8.9–144.5
GWh a year. Low 2017, high 2025
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | 67,754 | Not reported | 12 of 12 |
| 2004 | 16,388 | Not reported | 12 of 12 |
| 2005 | 17,052 | Not reported | 12 of 12 |
| 2006 | 23,846 | Not reported | 12 of 12 |
| 2007 | 32,121 | Not reported | 12 of 12 |
| 2008 | 24,780 | Not reported | 12 of 12 |
| 2009 | 14,622 | Not reported | 12 of 12 |
| 2010 | 4,733 | 1.4% | 12 of 12 |
| 2011 | 3,900 | Not reported | 12 of 12 |
| 2012 | 12,853 | Not reported | 12 of 12 |
| 2013 | 8,391 | 2.4% | 12 of 12 |
| 2014 | 2,917 | 0.8% | 12 of 12 |
| 2015 | 10,863 | 3.1% | 12 of 12 |
| 2016 | 11,657 | 3.3% | 12 of 12 |
| 2017 | 8,889 | 2.5% | 12 of 12 |
| 2018 | 9,291 | 2.7% | 12 of 12 |
| 2019 | 22,324 | 6.4% | 12 of 12 |
| 2020 | 35,182 | 10.0% | 12 of 12 |
| 2021 | 42,836 | 12.2% | 12 of 12 |
| 2022 | 27,683 | 7.9% | 12 of 12 |
| 2023 | 38,170 | 10.9% | 12 of 12 |
| 2024 | 115,379 | 32.8% | 12 of 12 |
| 2025 | 144,457 | 41.2% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDCO₂, 2025
92,536
US short tons. 2024: 75,539
SO₂, 2025
0
US short tons
NOx, 2025
46
US short tons
CO₂ per MWh, calculated
0.64 t
About 1,281 lb per MWh
1 of 1 EPA units reported CO₂ in 2025 (CT1), matched to EIA plant 55478 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 0001 | Natural Gas Fired Combustion Turbine | 40.0 | March 2002 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Black Hills Power, Inc. as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Lange
More plants operated by Black Hills Power, Inc.
Questions about Lange
How much power does Lange Generating Station produce?
Lange Generating Station reported 144,457 MWh (144 GWh) of net generation in 2025, a 41.2% capacity factor on 40 MW of nameplate capacity.
Where is Lange Generating Station?
Lange Generating Station is in Pennington County, South Dakota, at 44.1218, −103.2641. It is in the Western Area Power Administration - Rocky Mountain Region balancing area (WACM).
Who operates Lange Generating Station?
EIA-860M for August 2026 lists Black Hills Power, Inc. as the operator (EIA operator ID 19545). The operator is not always the owner.
When did Lange Generating Station start operating?
Its first generator began operating in March 2002, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page