Milner Hydro
Hydro power plant in Cassia County, Idaho. 59.5 MW of nameplate capacity across 3 generators, operated by Idaho Power Co.
Also known as EIA plant 7190
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 59.5 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- September 1992First generator online
- Operator
- Idaho Power CoEIA operator ID 9191
- Grid
- IPCOBalancing authority IPCO
- Price nodes
- None linkedNo verified ISO node
- Location
- Cassia County, ID42.5268, −114.0369
- EIA plant ID
- 7190EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Milner Hydro produces
Free · EIA-923Net generation, 2025
33.7 GWh
33,693 MWh, final
Capacity factor, 2025
6.5%
2024: 18.9%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
13.2–294.5
GWh a year. Low 2022, high 2018
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 170,438 | Not reported | 12 of 12 |
| 2001 | 30,417 | Not reported | 12 of 12 |
| 2002 | 24,979 | Not reported | 12 of 12 |
| 2003 | 17,589 | Not reported | 12 of 12 |
| 2004 | 19,423 | Not reported | 12 of 12 |
| 2005 | 35,683 | Not reported | 12 of 12 |
| 2006 | 138,982 | Not reported | 12 of 12 |
| 2007 | 66,918 | Not reported | 12 of 12 |
| 2008 | 52,546 | Not reported | 12 of 12 |
| 2009 | 162,666 | Not reported | 12 of 12 |
| 2010 | 91,701 | 17.6% | 12 of 12 |
| 2011 | 435,475 | 83.5% | 12 of 12 |
| 2012 | 175,182 | 33.5% | 12 of 12 |
| 2013 | 52,819 | 10.1% | 12 of 12 |
| 2014 | 53,514 | 10.3% | 12 of 12 |
| 2015 | 70,756 | 13.6% | 12 of 12 |
| 2016 | 27,473 | 5.3% | 12 of 12 |
| 2017 | 237,491 | 45.6% | 12 of 12 |
| 2018 | 294,476 | 56.5% | 12 of 12 |
| 2019 | 157,221 | 30.2% | 12 of 12 |
| 2020 | 127,584 | 24.4% | 12 of 12 |
| 2021 | 34,722 | 6.7% | 12 of 12 |
| 2022 | 13,222 | 2.5% | 12 of 12 |
| 2023 | 28,958 | 5.6% | 12 of 12 |
| 2024 | 98,711 | 18.9% | 12 of 12 |
| 2025 | 33,693 | 6.5% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Conventional Hydroelectric | 46.6 | December 1992 |
| 2 | Conventional Hydroelectric | 12.1 | September 1992 |
| 3 | Conventional Hydroelectric | 0.8 | September 1992 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Idaho Power Co as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Power plants near Milner Hydro
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Questions about Milner Hydro
How much power does Milner Hydro produce?
Milner Hydro reported 33,693 MWh (33.7 GWh) of net generation in 2025, a 6.5% capacity factor on 59.5 MW of nameplate capacity.
Where is Milner Hydro?
Milner Hydro is in Cassia County, Idaho, at 42.5268, −114.0369. It is in the Idaho Power Company balancing area (IPCO).
Who operates Milner Hydro?
EIA-860M for August 2026 lists Idaho Power Co as the operator (EIA operator ID 9191). The operator is not always the owner.
When did Milner Hydro start operating?
Its first generator began operating in September 1992, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page