Neil Simpson Gas Turbine #2
Campbell County, Wyoming · EIA plant ID 55477 · Operator: Black Hills Power, Inc. d/b/a
Nameplate40MWSummer 34 MW
Generators1in service
Net generation36GWh12 mo to Dec 2025
Capacity factor6%gas/coal/oil units, summer MW
Heat rate11,446Btu/kWhfossil units, electric fuel, HHV
First online2001Runs as peaking
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2002 | 147.5 | 49.5% | 9,895 |
| 2003 | 84.9 | 28.5% | 10,393 |
| 2004 | 8.2 | 2.7% | 11,024 |
| 2005 | 26.4 | 8.9% | 9,097 |
| 2006 | 29.9 | 10.0% | 9,678 |
| 2007 | 21.6 | 7.3% | 9,721 |
| 2008 | 7.2 | 2.4% | 10,205 |
| 2009 | 2.3 | 0.8% | 9,553 |
| 2010 | 2 | 0.7% | 10,745 |
| 2011 | 7.3 | 2.5% | 9,925 |
| 2012 | 15.2 | 5.1% | 10,556 |
| 2013 | 16.6 | 5.6% | 10,504 |
| 2014 | 4.5 | 1.5% | 15,579 |
| 2015 | 7 | 2.4% | 12,527 |
| 2016 | 5.3 | 1.8% | 13,832 |
| 2017 | 7.7 | 2.6% | 10,994 |
| 2018 | 11.7 | 3.9% | 10,663 |
| 2019 | 16.4 | 5.5% | 11,393 |
| 2020 | 16 | 5.3% | 10,668 |
| 2021 | 16.3 | 5.5% | 10,554 |
| 2022 | 22.6 | 7.6% | 10,797 |
| 2023 | 19.4 | 6.5% | 11,154 |
| 2024 | 28.5 | 9.5% | 11,540 |
| 2025 | 36.5 | 12.3% | 11,446 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| GT2 | Natural Gas Fired Combustion Turbine | GT | 40 | 34 | Apr 2001 | Operating | — | coming soon |
| 1 | Natural Gas Fired Combustion Turbine | GT | 40 | 34 | Apr 2001 | not_current | — | coming soon |
Owner / operator
Operator: Black Hills Power, Inc. d/b/a. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| City Of Gillette | 100.0% | 40 MW |
Nearby plants
Within 80 km.
| Neil Simpson II | 130 MW | 0.4 km |
| Wygen 1 | 90 MW | 0.4 km |
| Wyodak | 362 MW | 0.6 km |
| Wygen III | 116 MW | 0.8 km |
| Wygen 2 | 95 MW | 0.8 km |
| Dry Fork Station | 484 MW | 13.3 km |