Green Mountain
Summit County, Colorado · EIA plant ID 516 · Operator: U S Bureau of Reclamation
Nameplate26MWSummer 26 MW
Generators2in service
Net generation29GWh12 mo to Dec 2025
Capacity factor13%hydro units, summer MW
Heat rate—thermal plants only
First online1943
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), hydro 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.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 30.6 | 13.5% | — |
| 2002 | 19 | 8.3% | — |
| 2003 | 26.2 | 11.5% | — |
| 2004 | 20.5 | 9.0% | — |
| 2005 | 23.9 | 10.5% | — |
| 2006 | 28.9 | 12.7% | — |
| 2007 | 61.1 | 26.9% | — |
| 2008 | 66.3 | 29.0% | — |
| 2009 | 67.1 | 29.5% | — |
| 2010 | 50.2 | 22.0% | — |
| 2011 | 82 | 36.0% | — |
| 2012 | 35.9 | 15.7% | — |
| 2013 | 33.1 | 14.5% | — |
| 2014 | 93.8 | 41.2% | — |
| 2015 | 76.6 | 33.7% | — |
| 2016 | 59.6 | 26.1% | — |
| 2017 | 56.9 | 25.0% | — |
| 2018 | 32 | 14.1% | — |
| 2019 | 68.3 | 30.0% | — |
| 2020 | 42.1 | 18.4% | — |
| 2021 | 25.9 | 11.4% | — |
| 2022 | 24 | 10.5% | — |
| 2023 | 47.1 | 20.7% | — |
| 2024 | 57.8 | 25.3% | — |
| 2025 | 28.5 | 12.5% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | HY | 13 | 13 | May 1943 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 13 | 13 | May 1943 | Operating | — | coming soon |
Owner / operator
Operator: U S Bureau of Reclamation. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| U S Bureau of Reclamation | 100.0% | 26 MW |
Nearby plants
Within 80 km.
| Williams Fork Hydro Plant | 4 MW | 20.5 km |
| Dillon Hydro Plant | 2 MW | 36.6 km |
| Tom Sifers Solar | 1 MW | 42.5 km |
| Granby Hydro | 1 MW | 49.5 km |
| Georgetown Hydro | 1 MW | 58.1 km |
| Eagle Valley Clean Energy LLC Biomass | retired | 58.1 km |