River Mill
Hydro power plant in Clackamas County, Oregon. 18.8 MW of nameplate capacity across 5 generators, operated by Portland General Electric Co.
Also known as EIA plant 3049
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 18.8 MWNameplate
- Generators
- 5 operatingEIA-860M, August 2026
- Operating since
- November 1911First generator online
- Operator
- Portland General Electric CoEIA operator ID 15248
- Grid
- PGEBalancing authority PGE
- Price nodes
- 1 CAISO nodeResource nodes with prices
- Location
- Clackamas County, OR45.3000, −122.3500
- EIA plant ID
- 3049EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power River Mill produces
Free · EIA-923Net generation, 2025
77.3 GWh
77,294 MWh, final
Capacity factor, 2025
46.9%
2024: 60.0%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
70.3–110.2
GWh a year. Low 2019, high 2017
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 104,688 | Not reported | 12 of 12 |
| 2001 | 80,229 | Not reported | 12 of 12 |
| 2002 | 99,446 | Not reported | 12 of 12 |
| 2003 | 97,581 | Not reported | 12 of 12 |
| 2004 | 106,021 | Not reported | 12 of 12 |
| 2005 | 76,514 | Not reported | 12 of 12 |
| 2006 | 106,798 | Not reported | 12 of 12 |
| 2007 | 97,790 | Not reported | 12 of 12 |
| 2008 | 113,517 | Not reported | 12 of 12 |
| 2009 | 108,858 | Not reported | 12 of 12 |
| 2010 | 113,007 | 68.6% | 12 of 12 |
| 2011 | 108,840 | 66.1% | 12 of 12 |
| 2012 | 117,175 | 71.0% | 12 of 12 |
| 2013 | 95,907 | 58.2% | 12 of 12 |
| 2014 | 104,995 | 63.8% | 12 of 12 |
| 2015 | 74,120 | 45.0% | 12 of 12 |
| 2016 | 105,219 | 63.7% | 12 of 12 |
| 2017 | 110,181 | 66.9% | 12 of 12 |
| 2018 | 88,007 | 53.4% | 12 of 12 |
| 2019 | 70,301 | 42.7% | 12 of 12 |
| 2020 | 84,426 | 51.1% | 12 of 12 |
| 2021 | 79,567 | 48.3% | 12 of 12 |
| 2022 | 104,242 | 63.3% | 12 of 12 |
| 2023 | 83,830 | 50.9% | 12 of 12 |
| 2024 | 99,102 | 60.0% | 12 of 12 |
| 2025 | 77,294 | 46.9% | 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 account · CAISOEmissions
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 | 3.3 | November 1911 |
| 2 | Conventional Hydroelectric | 3.3 | December 1911 |
| 3 | Conventional Hydroelectric | 3.3 | January 1912 |
| 4 | Conventional Hydroelectric | 3.9 | December 1927 |
| 5 | Conventional Hydroelectric | 5.0 | May 1952 |
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 Portland General Electric 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 River Mill
More plants operated by Portland General Electric Co
Questions about River Mill
How much power does River Mill produce?
River Mill reported 77,294 MWh (77.3 GWh) of net generation in 2025, a 46.9% capacity factor on 18.8 MW of nameplate capacity.
Where is River Mill?
River Mill is in Clackamas County, Oregon, at 45.3000, −122.3500. It is in the Portland General Electric Company balancing area (PGE).
Who operates River Mill?
EIA-860M for August 2026 lists Portland General Electric Co as the operator (EIA operator ID 15248). The operator is not always the owner.
When did River Mill start operating?
Its first generator began operating in November 1911, according to EIA-860M.
Does InfraMap have power prices for River Mill?
Yes. InfraMap has CAISO day-ahead and real-time prices at 1 price node linked to River Mill, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
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)
- CAISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page