Thousand Springs
Gooding County, Idaho · EIA plant ID 820 · Operator: Idaho Power Co
Nameplate7MWSummer 7 MW
Generators1in service
Net generation52GWh12 mo to Dec 2025
Capacity factor86%hydro units, summer MW
Heat rate—thermal plants only
First online1920
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 | 57.6 | 107.7% | — |
| 2002 | 50.1 | 93.7% | — |
| 2003 | 52.9 | 90.1% | — |
| 2004 | 52.6 | 89.3% | — |
| 2005 | 52.1 | 88.7% | — |
| 2006 | 50.4 | 85.9% | — |
| 2007 | 52.8 | 90.0% | — |
| 2008 | 52.2 | 88.7% | — |
| 2009 | 52 | 74.1% | — |
| 2010 | 51.6 | 73.6% | — |
| 2011 | 17.2 | 24.6% | — |
| 2012 | 56.5 | 80.5% | — |
| 2013 | 56.2 | 80.2% | — |
| 2014 | 55.5 | 79.1% | — |
| 2015 | 52.7 | 75.3% | — |
| 2016 | 16.3 | 23.2% | — |
| 2017 | 0 | 0.0% | — |
| 2018 | 30.6 | 54.5% | — |
| 2019 | 57 | 101.6% | — |
| 2020 | 56.5 | 100.5% | — |
| 2021 | 53.2 | 106.5% | — |
| 2022 | 51.8 | 86.9% | — |
| 2023 | 54.2 | 93.8% | — |
| 2024 | 54.8 | 92.5% | — |
| 2025 | 51.8 | 86.3% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 3 | Conventional Hydroelectric | HY | 6.8 | 6.9 | May 1920 | Operating | — | coming soon |
| 1 | Conventional Hydroelectric | HY | 1 | — | Aug 1912 | Retired Dec 2017 | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 1 | — | Aug 1912 | Retired Dec 2017 | — | coming soon |
Owner / operator
Operator: Idaho Power Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Idaho Power Co | 100.0% | 7 MW |
Nearby plants
Within 80 km.
| Blind Canyon Hydro | 1 MW | 4.7 km |
| Upper Salmon B | 17 MW | 6.5 km |
| Upper Salmon A | 18 MW | 7.8 km |
| Clear Lake | 3 MW | 9.4 km |
| Lateral 10 Ventures | 2 MW | 11.2 km |
| Lower Salmon | 60 MW | 12.5 km |