Neil Simpson Gas Turbine #2
Natural gas power plant in Campbell County, Wyoming. 40 MW of nameplate capacity across 1 generator, operated by Black Hills Power, Inc..
Also known as EIA plant 55477
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 40 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- April 2001First generator online
- Operator
- Black Hills Power, Inc.EIA operator ID 19545
- Grid
- WACMBalancing authority WACM
- Price nodes
- None linkedNo verified ISO node
- Location
- Campbell County, WY44.2850, −105.3786
- EIA plant ID
- 55477EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Neil Simpson Gas Turbine #2 produces
Free · EIA-923Net generation, 2025
36.5 GWh
36,484 MWh, final
Capacity factor, 2025
10.4%
2024: 8.1%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
5.3–36.5
GWh a year. Low 2016, 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 | 147,530 | Not reported | 12 of 12 |
| 2003 | 84,926 | Not reported | 12 of 12 |
| 2004 | 8,190 | Not reported | 12 of 12 |
| 2005 | 26,386 | Not reported | 12 of 12 |
| 2006 | 29,875 | Not reported | 12 of 12 |
| 2007 | 21,627 | Not reported | 12 of 12 |
| 2008 | 7,211 | Not reported | 12 of 12 |
| 2009 | 2,273 | Not reported | 12 of 12 |
| 2010 | 1,963 | 0.6% | 12 of 12 |
| 2011 | 7,305 | 2.1% | 12 of 12 |
| 2012 | 15,176 | 4.3% | 12 of 12 |
| 2013 | 16,577 | 4.7% | 12 of 12 |
| 2014 | 4,478 | 1.3% | 12 of 12 |
| 2015 | 7,027 | 2.0% | 12 of 12 |
| 2016 | 5,309 | 1.5% | 12 of 12 |
| 2017 | 7,678 | 2.2% | 12 of 12 |
| 2018 | 11,679 | 3.3% | 12 of 12 |
| 2019 | 16,426 | 4.7% | 12 of 12 |
| 2020 | 15,983 | 4.5% | 12 of 12 |
| 2021 | 16,321 | 4.7% | 12 of 12 |
| 2022 | 22,633 | 6.5% | 12 of 12 |
| 2023 | 19,386 | 5.5% | 12 of 12 |
| 2024 | 28,484 | 8.1% | 12 of 12 |
| 2025 | 36,484 | 10.4% | 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
23,951
US short tons. 2024: 18,522
SO₂, 2025
0
US short tons
NOx, 2025
11
US short tons
CO₂ per MWh, calculated
0.66 t
About 1,313 lb per MWh
1 of 1 EPA units reported CO₂ in 2025 (CT2), matched to EIA plant 55477 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 |
|---|---|---|---|
| GT2 | Natural Gas Fired Combustion Turbine | 40.0 | April 2001 |
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 Neil Simpson Gas Turbine #2
More plants operated by Black Hills Power, Inc.
Questions about Neil Simpson Gas Turbine #2
How much power does Neil Simpson Gas Turbine #2 produce?
Neil Simpson Gas Turbine #2 reported 36,484 MWh (36.5 GWh) of net generation in 2025, a 10.4% capacity factor on 40 MW of nameplate capacity.
Where is Neil Simpson Gas Turbine #2?
Neil Simpson Gas Turbine #2 is in Campbell County, Wyoming, at 44.2850, −105.3786. It is in the Western Area Power Administration - Rocky Mountain Region balancing area (WACM).
Who operates Neil Simpson Gas Turbine #2?
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 Neil Simpson Gas Turbine #2 start operating?
Its first generator began operating in April 2001, 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
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page