Vallecito Hydroelectric
La Plata County, Colorado · EIA plant ID 50206 · Operator: Ptarmigan Res & Engy Inc
Nameplate6MWSummer 6 MW
Generators3in service
Net generation17GWh12 mo to Dec 2025
Capacity factor34%hydro units, summer MW
Heat rate—thermal plants only
First online1989
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 | 0.1% | — |
| 2002 | 0 | 0.0% | — |
| 2003 | 0 | 0.0% | — |
| 2004 | 20.3 | 39.8% | — |
| 2005 | 29.5 | 58.0% | — |
| 2006 | 0 | 0.1% | — |
| 2007 | 0 | 0.1% | — |
| 2008 | 26.3 | 51.7% | — |
| 2009 | 19.6 | 38.5% | — |
| 2010 | 19.4 | 38.1% | — |
| 2011 | 16.8 | 33.0% | — |
| 2012 | 17.6 | 34.6% | — |
| 2013 | 16 | 31.5% | — |
| 2014 | 21.1 | 41.5% | — |
| 2015 | 19 | 37.4% | — |
| 2016 | 23 | 45.1% | — |
| 2017 | 25.9 | 50.9% | — |
| 2018 | 18.8 | 37.0% | — |
| 2019 | 22.4 | 44.2% | — |
| 2020 | 18 | 35.3% | — |
| 2021 | 11 | 21.6% | — |
| 2022 | 14.3 | 28.2% | — |
| 2023 | 23.7 | 46.7% | — |
| 2024 | 19.1 | 37.6% | — |
| 2025 | 17.4 | 34.3% | — |
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 | 0.8 | 0.8 | May 1989 | Operating | — | coming soon |
| GEN2 | Conventional Hydroelectric | HY | 2.5 | 2.5 | May 1989 | Operating | — | coming soon |
| GEN3 | Conventional Hydroelectric | HY | 2.5 | 2.5 | May 1989 | Operating | — | coming soon |
Owner / operator
Operator: Ptarmigan Res & Engy Inc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Ptarmigan Res & Engy Inc | 100.0% | 6 MW |
Nearby plants
Within 80 km.
| Tacoma | 5 MW | 24.2 km |
| Williams Ignacio Natural Gas Plant | 6 MW | 31.6 km |
| LPEA Sunnyside Solar 1 Facility | 2 MW | 37.6 km |
| Ames Hydro | 4 MW | 60.6 km |
| Navajo Dam | 30 MW | 63.6 km |