Williams Fork Hydro Plant
Grand County, Colorado · EIA plant ID 10422 · Operator: Denver City & County of
Nameplate4MWSummer 4 MW
Generators2in service
Net generation12GWh12 mo to Dec 2025
Capacity factor39%hydro units, summer MW
Heat rate—thermal plants only
First online1959
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 | 0 | 0.0% | — |
| 2002 | 0 | 0.0% | — |
| 2003 | 0 | 0.0% | — |
| 2004 | 7.9 | 30.0% | — |
| 2005 | 9.3 | 35.4% | — |
| 2006 | 12.4 | 47.3% | — |
| 2007 | 9.5 | 36.2% | — |
| 2008 | 14.3 | 54.3% | — |
| 2009 | 11.8 | 44.9% | — |
| 2010 | 0.5 | 2.0% | — |
| 2011 | 0 | 0.0% | — |
| 2012 | 0 | 0.0% | — |
| 2013 | 0 | 0.0% | — |
| 2014 | 12.8 | 41.6% | — |
| 2015 | 12.3 | 40.2% | — |
| 2016 | 13.1 | 42.5% | — |
| 2017 | 13.2 | 42.9% | — |
| 2018 | 5.2 | 17.0% | — |
| 2019 | 5 | 16.2% | — |
| 2020 | 10.8 | 35.2% | — |
| 2021 | 8.9 | 28.9% | — |
| 2022 | 12.3 | 40.0% | — |
| 2023 | 8.7 | 28.4% | — |
| 2024 | 11.7 | 38.0% | — |
| 2025 | 12.1 | 39.5% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Conventional Hydroelectric | HY | 3 | 3 | Jul 1959 | Operating | — | coming soon |
| GEN2 | Conventional Hydroelectric | HY | 0.5 | 0.5 | Sep 2012 | Operating | — | coming soon |
Owner / operator
Operator: Denver City & County of. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Denver City & County of | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| Green Mountain | 26 MW | 20.5 km |
| Granby Hydro | 1 MW | 31.2 km |
| Tom Sifers Solar | 1 MW | 31.7 km |
| Dillon Hydro Plant | 2 MW | 47.6 km |
| Georgetown Hydro | 1 MW | 57.7 km |
| Cabin Creek | 300 MW | 59.8 km |