Cowlitz Falls
Hydro power plant in Lewis County, Washington. 70 MW of nameplate capacity across 2 generators, operated by PUD No 1 of Lewis County - (WA).
Also known as EIA plant 7427
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 70 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- June 1994First generator online
- Operator
- PUD No 1 of Lewis County - (WA)EIA operator ID 10944
- Grid
- BPATBalancing authority BPAT
- Price nodes
- None linkedNo verified ISO node
- Location
- Lewis County, WA46.4661, −122.1097
- EIA plant ID
- 7427EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Cowlitz Falls produces
Free · EIA-923Net generation, 2025
196 GWh
195,646 MWh, final
Capacity factor, 2025
31.9%
2024: 31.9%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
165.3–283.0
GWh a year. Low 2019, high 2017
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | 230,490 | Not reported | 12 of 12 |
| 2003 | 215,670 | Not reported | 12 of 12 |
| 2004 | 238,051 | Not reported | 12 of 12 |
| 2005 | 178,387 | Not reported | 12 of 12 |
| 2006 | 258,402 | Not reported | 12 of 12 |
| 2007 | 223,182 | Not reported | 12 of 12 |
| 2008 | 224,374 | Not reported | 12 of 12 |
| 2009 | 233,765 | Not reported | 12 of 12 |
| 2010 | 242,917 | 39.6% | 12 of 12 |
| 2011 | 215,380 | 35.1% | 12 of 12 |
| 2012 | 305,267 | 49.6% | 12 of 12 |
| 2013 | 252,687 | 41.2% | 12 of 12 |
| 2014 | 290,216 | 47.3% | 12 of 12 |
| 2015 | 188,677 | 30.8% | 12 of 12 |
| 2016 | 250,842 | 40.8% | 12 of 12 |
| 2017 | 283,000 | 46.2% | 12 of 12 |
| 2018 | 226,872 | 37.0% | 12 of 12 |
| 2019 | 165,250 | 26.9% | 12 of 12 |
| 2020 | 243,633 | 39.6% | 12 of 12 |
| 2021 | 236,996 | 38.6% | 12 of 12 |
| 2022 | 235,729 | 38.4% | 12 of 12 |
| 2023 | 190,377 | 31.0% | 12 of 12 |
| 2024 | 196,307 | 31.9% | 12 of 12 |
| 2025 | 195,646 | 31.9% | 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 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 |
|---|---|---|---|
| U#1 | Conventional Hydroelectric | 35.0 | June 1994 |
| U#2 | Conventional Hydroelectric | 35.0 | June 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 PUD No 1 of Lewis County - (WA) 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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Questions about Cowlitz Falls
How much power does Cowlitz Falls produce?
Cowlitz Falls reported 195,646 MWh (196 GWh) of net generation in 2025, a 31.9% capacity factor on 70 MW of nameplate capacity.
Where is Cowlitz Falls?
Cowlitz Falls is in Lewis County, Washington, at 46.4661, −122.1097. It is in the Bonneville Power Administration balancing area (BPAT).
Who operates Cowlitz Falls?
EIA-860M for August 2026 lists PUD No 1 of Lewis County - (WA) as the operator (EIA operator ID 10944). The operator is not always the owner.
When did Cowlitz Falls start operating?
Its first generator began operating in June 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