Lower Salmon
Gooding County, Idaho · EIA plant ID 816 · Operator: Idaho Power Co
Nameplate60MWSummer 74 MW
Generators4in service
Net generation197GWh12 mo to Dec 2025
Capacity factor30%hydro units, summer MW
Heat rate—thermal plants only
First online1949
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 | 212.7 | 35.7% | — |
| 2002 | 193.6 | 32.5% | — |
| 2003 | 194.1 | 31.7% | — |
| 2004 | 185 | 30.1% | — |
| 2005 | 196.4 | 32.0% | — |
| 2006 | 256.8 | 41.9% | — |
| 2007 | 214.6 | 35.0% | — |
| 2008 | 210.4 | 34.2% | — |
| 2009 | 266.3 | 42.3% | — |
| 2010 | 225.2 | 35.8% | — |
| 2011 | 391 | 62.1% | — |
| 2012 | 248.9 | 39.4% | — |
| 2013 | 194.2 | 30.8% | — |
| 2014 | 197.1 | 31.3% | — |
| 2015 | 207.4 | 32.9% | — |
| 2016 | 190.5 | 30.2% | — |
| 2017 | 308.4 | 49.0% | — |
| 2018 | 327.4 | 52.0% | — |
| 2019 | 244.9 | 38.9% | — |
| 2020 | 234.1 | 37.1% | — |
| 2021 | 200.3 | 37.3% | — |
| 2022 | 183.4 | 30.3% | — |
| 2023 | 187.9 | 45.5% | — |
| 2024 | 232 | 36.9% | — |
| 2025 | 196.7 | 30.3% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | HY | 15 | 19.3 | Jul 1949 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 15 | 17.4 | Sep 1949 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 15 | 19.2 | Feb 1949 | Operating | — | coming soon |
| 4 | Conventional Hydroelectric | HY | 15 | 18.3 | Mar 1949 | Operating | — | 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% | 60 MW |
Nearby plants
Within 80 km.
| Lower Malad | 14 MW | 2.7 km |
| Upper Malad | 8 MW | 2.9 km |
| Fossil Gulch | 11 MW | 4.2 km |
| Tuana Gulch Wind Park | 11 MW | 5.4 km |
| Thousand Springs Wind Park | 12 MW | 6.1 km |
| Oregon Trail Wind Park | 14 MW | 7 km |