Swan Falls
Hydro power plant in Ada County, Idaho. 27.2 MW of nameplate capacity across 2 generators, operated by Idaho Power Co.
Also known as EIA plant 819
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 27.2 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- March 1994First generator online
- Operator
- Idaho Power CoEIA operator ID 9191
- Grid
- IPCOBalancing authority IPCO
- Price nodes
- None linkedNo verified ISO node
- Location
- Ada County, ID43.2435, −116.3791
- EIA plant ID
- 819EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Swan Falls produces
Free · EIA-923Net generation, 2025
110 GWh
110,047 MWh, final
Capacity factor, 2025
46.2%
2024: 51.0%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
106.7–134.3
GWh a year. Low 2022, high 2019
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 123,927 | Not reported | 12 of 12 |
| 2001 | 118,728 | Not reported | 12 of 12 |
| 2002 | 112,913 | Not reported | 12 of 12 |
| 2003 | 110,496 | Not reported | 12 of 12 |
| 2004 | 113,034 | Not reported | 12 of 12 |
| 2005 | 119,851 | Not reported | 12 of 12 |
| 2006 | 133,516 | Not reported | 12 of 12 |
| 2007 | 117,791 | Not reported | 12 of 12 |
| 2008 | 114,955 | Not reported | 12 of 12 |
| 2009 | 131,562 | Not reported | 12 of 12 |
| 2010 | 124,623 | 56.9% | 12 of 12 |
| 2011 | 157,917 | 72.1% | 12 of 12 |
| 2012 | 127,279 | 58.0% | 12 of 12 |
| 2013 | 108,062 | 49.3% | 12 of 12 |
| 2014 | 110,848 | 50.6% | 12 of 12 |
| 2015 | 110,847 | 50.6% | 12 of 12 |
| 2016 | 112,684 | 51.3% | 12 of 12 |
| 2017 | 130,191 | 59.4% | 12 of 12 |
| 2018 | 123,727 | 56.5% | 12 of 12 |
| 2019 | 134,329 | 61.3% | 12 of 12 |
| 2020 | 119,947 | 54.6% | 12 of 12 |
| 2021 | 107,811 | 49.2% | 12 of 12 |
| 2022 | 106,707 | 48.7% | 12 of 12 |
| 2023 | 113,009 | Not reported | 12 of 12 |
| 2024 | 121,927 | 51.0% | 12 of 12 |
| 2025 | 110,047 | 46.2% | 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 | 13.6 | March 1994 |
| 2 | Conventional Hydroelectric | 13.6 | May 1994 |
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 Swan Falls
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Questions about Swan Falls
How much power does Swan Falls produce?
Swan Falls reported 110,047 MWh (110 GWh) of net generation in 2025, a 46.2% capacity factor on 27.2 MW of nameplate capacity.
Where is Swan Falls?
Swan Falls is in Ada County, Idaho, at 43.2435, −116.3791. It is in the Idaho Power Company balancing area (IPCO).
Who operates Swan Falls?
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 Swan Falls start operating?
Its first generator began operating in March 1994, 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