AlamosaRetirement planned
Alamosa County, Colorado · EIA plant ID 464 · Operator: Public Service Co of Colorado
Nameplate53MWSummer 27 MW
Generators2in service
Net generation27GWh12 mo to Dec 2025
Capacity factor12%gas/coal/oil units, summer MW
Heat rate19,488Btu/kWhfossil units, electric fuel, HHV
First online1973Runs 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) |
|---|---|---|---|
| 2001 | 11.2 | 4.9% | 23,915 |
| 2002 | 9.5 | 4.2% | 29,013 |
| 2003 | 3 | 1.3% | 23,156 |
| 2004 | 0.6 | 0.2% | 9,742 |
| 2005 | 0 | 0.0% | 11,606 |
| 2006 | 0 | 0.0% | — |
| 2007 | 0.3 | 0.1% | 28,696 |
| 2008 | 0.8 | 0.3% | 17,319 |
| 2009 | 1.1 | 0.5% | 18,247 |
| 2010 | 3.6 | 1.6% | 17,230 |
| 2011 | 11.4 | 5.0% | 17,711 |
| 2012 | 4.9 | 2.1% | 18,532 |
| 2013 | 10 | 4.2% | 16,993 |
| 2014 | 1.9 | 0.8% | 18,045 |
| 2015 | 3.6 | 1.5% | 16,189 |
| 2016 | 4.1 | 1.7% | 17,018 |
| 2017 | 0.4 | 0.2% | 26,268 |
| 2018 | 8.8 | 3.7% | 15,781 |
| 2019 | 6.8 | 2.9% | 14,783 |
| 2020 | 13 | 5.5% | 21,059 |
| 2021 | 6.9 | 2.9% | 25,556 |
| 2022 | 13.9 | 5.9% | 22,957 |
| 2023 | 7.8 | 3.3% | — |
| 2024 | 10.6 | 4.5% | 24,246 |
| 2025 | 27.2 | 11.5% | 19,488 |
Fuel capability
Gas-fired turbines (CT/GT/CA/CS) that can also burn liquid fuel. EIA-860 Schedule 3 for capability, EIA-923 for actual burn.
StatusLikely still dual fuel
Liquid fuel burned · 36 mo2,583,964 MMBtu
Last month with liquid burnDec 2025
Switch while operatingYes
Net summer MW on gas27
Net summer MW on oil25
Time gas → oilup to 1 h (EIA 1H)
Time oil → gasup to 1 h (EIA 1H)
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 |
|---|---|---|---|---|---|---|---|---|
| CT1 | Natural Gas Fired Combustion Turbine | GT | 26.6 | 13 | Jun 1973 | Operating · retirement planned | Dec 2030 | coming soon |
| CT2 | Natural Gas Fired Combustion Turbine | GT | 26.6 | 14 | Jun 1977 | Operating · retirement planned | Dec 2030 | 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% | 53 MW |
Nearby plants
Within 80 km.
| San Luis Valley Regional Medical Center | 1 MW | 1.6 km |
| Oak Leaf Solar XXX LLC (CSG) | 2 MW | 1.6 km |
| Alamosa Solar South CSG | 2 MW | 3.3 km |
| Rock Creek 2 CSG | 2 MW | 6.7 km |
| Cogentrix of Alamosa | 30 MW | 16.4 km |
| Monte Vista Solar 2 CSG, LLC | 2 MW | 22 km |