Boulder
Garfield County, Utah · EIA plant ID 3699 · Operator: Garkane Energy Coop, Inc
Nameplate4MWSummer 4 MW
Generators3in service
Net generation17GWh12 mo to Dec 2025
Capacity factor47%hydro units, summer MW
Heat rate—thermal plants only
First online1958
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 | 24.1 | 65.6% | — |
| 2002 | 21.8 | 59.3% | — |
| 2003 | 21.9 | 59.6% | — |
| 2004 | 21.9 | 59.3% | — |
| 2005 | 32.3 | 87.8% | — |
| 2006 | 30.8 | 83.6% | — |
| 2007 | 22 | 59.7% | — |
| 2008 | 26.6 | 72.2% | — |
| 2009 | 19.3 | 52.3% | — |
| 2010 | 21.1 | 57.3% | — |
| 2011 | 26.5 | 71.9% | — |
| 2012 | 23.2 | 62.9% | — |
| 2013 | 20.6 | 56.1% | — |
| 2014 | 20.3 | 55.3% | — |
| 2015 | 22.9 | 62.3% | — |
| 2016 | 25.6 | 69.3% | — |
| 2017 | 24.5 | 66.7% | — |
| 2018 | 19.5 | 53.1% | — |
| 2019 | 25.2 | 68.6% | — |
| 2020 | 22 | 59.7% | — |
| 2021 | 24.1 | 65.4% | — |
| 2022 | 18.6 | 50.7% | — |
| 2023 | 20.2 | 54.8% | — |
| 2024 | 20.4 | 55.4% | — |
| 2025 | 17.2 | 46.7% | — |
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 | 1.4 | 1.4 | Aug 1958 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 1.4 | 1.4 | Aug 1958 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 1.4 | 1.4 | Sep 1961 | Operating | — | coming soon |
Owner / operator
Operator: Garkane Energy Coop, Inc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Garkane Energy Coop, Inc | 100.0% | 4 MW |
Nearby plants
Within 80 km.
No other plants within 80 km.