Manchief Electric Generating Station
Morgan County, Colorado · EIA plant ID 55127 · Operator: Public Service Co of Colorado
Nameplate300MWSummer 250 MW
Generators2in service
Net generation328GWh12 mo to Aug 2026
Capacity factor15%gas/coal/oil units, summer MW
Heat rate10,649Btu/kWhfossil units, electric fuel, HHV
First online2000Runs as peaking
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 | 1,277.2 | 55.2% | 10,570 |
| 2002 | 849.2 | 36.7% | 11,181 |
| 2003 | 486.7 | 21.1% | 10,475 |
| 2004 | 64.4 | 2.8% | 10,952 |
| 2005 | 83.8 | 3.6% | 10,796 |
| 2006 | 116.6 | 5.0% | 10,413 |
| 2007 | 339.7 | 14.7% | 10,728 |
| 2008 | 214.1 | 9.2% | 10,607 |
| 2009 | 410.7 | 17.8% | 10,969 |
| 2010 | 187.1 | 8.1% | 11,145 |
| 2011 | 215.8 | 9.3% | 10,709 |
| 2012 | 177.4 | 7.6% | 10,768 |
| 2013 | 450.1 | 19.5% | 10,728 |
| 2014 | 295.7 | 12.8% | 10,390 |
| 2015 | 187.3 | 8.1% | 10,631 |
| 2016 | 77.2 | 3.3% | 10,403 |
| 2017 | 111.9 | 4.8% | 10,564 |
| 2018 | 300.3 | 13.0% | 10,442 |
| 2019 | 332.8 | 14.4% | 10,609 |
| 2020 | 451.4 | 19.5% | 10,815 |
| 2021 | 268.3 | 11.6% | 10,846 |
| 2022 | 223.2 | 9.7% | 10,619 |
| 2023 | 354.3 | 15.3% | 11,004 |
| 2024 | 214.9 | 9.8% | 10,730 |
| 2025 | 283.7 | 13.0% | 11,053 |
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 |
|---|---|---|---|---|---|---|---|---|
| UN1 | Natural Gas Fired Combustion Turbine | GT | 150 | 125 | Jun 2000 | Operating | — | coming soon |
| UN2 | Natural Gas Fired Combustion Turbine | GT | 150 | 125 | Jun 2000 | Operating | — | coming soon |
Owner / operator
Operator: Public Service Co of Colorado. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Public Service Co of Colorado | 100.0% | 300 MW |
Nearby plants
Within 80 km.
| Pawnee | 552 MW | 0.6 km |
| South Platte Solar | — | 3.2 km |
| Brush Generation Facility | 273 MW | 5.3 km |
| Pivot Solar 14 LLC (CSG) | 2 MW | 6 km |
| Pivot Solar 2 LLC (CSG) | 2 MW | 6 km |
| Pivot Solar 71 LLC | — | 6.3 km |