Arapahoe Combustion Turbine Project
Denver County, Colorado · EIA plant ID 55200 · Operator: SWG Arapahoe, LLC
Nameplate194MWSummer 123 MW
Generators3in service
Net generation387GWh12 mo to Aug 2026
Capacity factor36%gas/coal/oil units, summer MW
Heat rate8,875Btu/kWhfossil units, electric fuel, HHV
First online2000Runs as intermediate
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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) |
|---|---|---|---|
| 2001 | 95.7 | — | — |
| 2002 | 107.8 | — | — |
| 2003 | 295 | 27.5% | 8,319 |
| 2004 | 155.2 | 14.4% | 9,146 |
| 2005 | 231.3 | 21.6% | 8,831 |
| 2006 | 190.7 | 17.8% | 8,588 |
| 2007 | 269.8 | 25.1% | 8,585 |
| 2008 | 266.9 | 24.8% | 8,744 |
| 2009 | 302.7 | 28.2% | 8,708 |
| 2010 | 190.3 | 17.7% | 8,772 |
| 2011 | 178.8 | 16.7% | 8,867 |
| 2012 | 89.6 | 8.3% | 8,895 |
| 2013 | 21.5 | 2.0% | 8,855 |
| 2014 | 193 | 18.0% | 9,077 |
| 2015 | 118.3 | 11.0% | 9,201 |
| 2016 | 59.3 | 5.5% | 9,343 |
| 2017 | 184.2 | 17.2% | 9,229 |
| 2018 | 250.6 | 23.4% | 8,985 |
| 2019 | 208.4 | 19.4% | 9,007 |
| 2020 | 207.7 | 19.3% | 9,273 |
| 2021 | 202.9 | 18.9% | 9,064 |
| 2022 | 226 | 21.1% | 9,217 |
| 2023 | 219.1 | 20.4% | 9,082 |
| 2024 | 249.4 | 23.2% | 9,115 |
| 2025 | 310.4 | 28.9% | 9,021 |
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 |
|---|---|---|---|---|---|---|---|---|
| UN5 | Natural Gas Fired Combined Cycle | CT | 71.1 | 39 | May 2000 | Operating | — | coming soon |
| UN6 | Natural Gas Fired Combined Cycle | CT | 71.1 | 39 | May 2000 | Operating | — | coming soon |
| UN7 | Natural Gas Fired Combined Cycle | CA | 51.8 | 44.5 | Oct 2002 | Operating | — | coming soon |
Owner / operator
Operator: SWG Arapahoe, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| SWG Arapahoe, LLC | 100.0% | 194 MW |
Nearby plants
Within 80 km.
| Hillcrest Pump Station | 2 MW | 8.1 km |
| Mtn. Solar 4 (CSG) | 2 MW | 11.5 km |
| Cherokee | 1,006 MW | 15.7 km |
| Metro Wastewater Reclamation District | 15 MW | 15.9 km |
| TruStile Doors - Denver | 1 MW | 17.6 km |
| Waterton Solar I | — | 19.7 km |