Arapahoe Combustion Turbine Project
Natural gas power plant in Denver County, Colorado. 194 MW of nameplate capacity across 3 generators, operated by SWG Arapahoe, LLC.
Also known as Arapahoe Station · EIA plant 55200
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 194 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- May 2000First generator online
- Operator
- SWG Arapahoe, LLCEIA operator ID 58517
- Grid
- PSCOBalancing authority PSCO
- Price nodes
- None linkedNo verified ISO node
- Location
- Denver County, CO39.6692, −105.0018
- EIA plant ID
- 55200EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Arapahoe Combustion Turbine Project produces
Free · EIA-923Net generation, 2025
310 GWh
310,442 MWh, final
Capacity factor, 2025
18.3%
2024: 14.6%
January to July 2026
268 GWh
Provisional
Range, 2015 to 2025
59.3–310.4
GWh a year. Low 2016, high 2025
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 50,823 | Not reported | 12 of 12 |
| 2001 | 95,721 | Not reported | 12 of 12 |
| 2002 | 107,760 | Not reported | 12 of 12 |
| 2003 | 294,997 | Not reported | 12 of 12 |
| 2004 | 155,167 | Not reported | 12 of 12 |
| 2005 | 231,275 | Not reported | 12 of 12 |
| 2006 | 190,724 | Not reported | 12 of 12 |
| 2007 | 269,760 | Not reported | 12 of 12 |
| 2008 | 266,879 | Not reported | 12 of 12 |
| 2009 | 302,690 | Not reported | 12 of 12 |
| 2010 | 190,272 | 11.2% | 12 of 12 |
| 2011 | 178,752 | 10.5% | 12 of 12 |
| 2012 | 89,568 | 5.3% | 12 of 12 |
| 2013 | 21,504 | Not reported | 12 of 12 |
| 2014 | 192,959 | 11.4% | 12 of 12 |
| 2015 | 118,302 | 7.0% | 12 of 12 |
| 2016 | 59,277 | 3.5% | 12 of 12 |
| 2017 | 184,229 | 10.8% | 12 of 12 |
| 2018 | 250,560 | 14.7% | 12 of 12 |
| 2019 | 208,361 | 12.3% | 12 of 12 |
| 2020 | 207,742 | 12.2% | 12 of 12 |
| 2021 | 202,945 | 11.9% | 12 of 12 |
| 2022 | 225,984 | 13.3% | 12 of 12 |
| 2023 | 219,074 | 12.9% | 12 of 12 |
| 2024 | 249,406 | 14.6% | 12 of 12 |
| 2025 | 310,442 | 18.3% | 12 of 12 |
| 2026 (provisional, partial year) | 268,445 | 27.2% | 7 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
166,773
US short tons. 2024: 135,131
SO₂, 2025
1
US short tons
NOx, 2025
35
US short tons
CO₂ per MWh, calculated
0.54 t
About 1,074 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (CT5, CT6), matched to EIA plant 55200 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 |
|---|---|---|---|
| UN5 | Natural Gas Fired Combined Cycle | 71.1 | May 2000 |
| UN6 | Natural Gas Fired Combined Cycle | 71.1 | May 2000 |
| UN7 | Natural Gas Fired Combined Cycle | 51.8 | October 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 SWG Arapahoe, LLC 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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Questions about Arapahoe Combustion Turbine Project
How much power does Arapahoe Combustion Turbine Project produce?
Arapahoe Combustion Turbine Project reported 310,442 MWh (310 GWh) of net generation in 2025, a 18.3% capacity factor on 194 MW of nameplate capacity. From January to July 2026 it reported 268 GWh, which is provisional.
Where is Arapahoe Combustion Turbine Project?
Arapahoe Combustion Turbine Project is in Denver County, Colorado, at 39.6692, −105.0018. It is in the Public Service Company of Colorado balancing area (PSCO).
Who operates Arapahoe Combustion Turbine Project?
EIA-860M for August 2026 lists SWG Arapahoe, LLC as the operator (EIA operator ID 58517). The operator is not always the owner.
When did Arapahoe Combustion Turbine Project start operating?
Its first generator began operating in May 2000, 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