Garland Canal Power Plant
Park County, Wyoming · EIA plant ID 57551 · Operator: Shoshone Irrigation District
Nameplate3MWSummer 3 MW
Generators1in service
Net generation10GWh12 mo to Jul 2026
Capacity factor44%hydro units, summer MW
Heat rate—thermal plants only
First online1983
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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) |
|---|---|---|---|
| 2010 | 9.7 | 42.6% | — |
| 2011 | 9.6 | 42.0% | — |
| 2012 | 10.2 | 44.6% | — |
| 2013 | 9.6 | 42.1% | — |
| 2014 | 9.2 | 40.4% | — |
| 2015 | 9.9 | 43.5% | — |
| 2016 | 9.6 | 42.0% | — |
| 2017 | 7.6 | 33.5% | — |
| 2018 | 9.2 | 40.4% | — |
| 2019 | 7.9 | 34.7% | — |
| 2020 | 10.1 | 44.4% | — |
| 2021 | 9.1 | 39.9% | — |
| 2022 | 10 | 43.9% | — |
| 2023 | 9.2 | 40.5% | — |
| 2024 | 10 | 43.9% | — |
| 2025 | 8.8 | 38.7% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| MAIN | Conventional Hydroelectric | HY | 2.9 | 2.6 | Sep 1983 | Operating | — | coming soon |
Owner / operator
Operator: Shoshone Irrigation District. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Shoshone Irrigation District | 100.0% | 3 MW |
Nearby plants
Within 80 km.
| Elk Basin Gasoline Plant | 1 MW | 28.3 km |
| Heart Mountain | 5 MW | 31.6 km |
| Spirit Mountain | 5 MW | 31.7 km |
| Buffalo Bill | 18 MW | 34.3 km |
| Shoshone (WY) | 3 MW | 35.3 km |
| Pryor Mountain Wind | 240 MW | 50.7 km |