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70 MW Hydro operating in Lewis, WA — Bonneville Power Administration
70 MW
Nameplate Capacity
2
Generators
units
Conventional Hydroelectric
Technology
1994
Operating Since
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | PUD No 1 of Lewis County - (WA) | PUD No 1 of Lewis County | — |
| Owner(s) | PUD No 1 of Lewis County | PUD No 1 of Lewis County | — |
| Status | Operating | operating | — |
GEM identifies the owner as PUD No 1 of Lewis County
This entity is not yet in the GEM ownership database — chain unavailable.
Cowlitz Falls Dam is a 70 megawatt hydroelectric dam in Lewis County, Washington. It was constructed in the early 1990s and completed in 1994. The dam is 140 feet (43 m) high and 700 feet (210 m) wide.
Read more on WikipediaCowlitz Falls is a 70 MW conventional hydroelectric power plant located in Lewis County, Washington. The plant began operating in 1994 and is owned and operated by PUD No 1 of Lewis County. It consists of two generators utilizing water as its primary fuel source. Cowlitz Falls is connected to the grid within the Bonneville Power Administration balancing authority, operating within the Western Electricity Coordinating Council (WECC) NERC region.
In the most recent year with available data, Cowlitz Falls generated 196,307 MWh of electricity, achieving a capacity factor of 31.9%. The plant ranks as the 29th largest in Washington state out of 75 power plants, and nationally it ranks 255th out of 1464 plants.
Generated from EIA, GEM, and public data sources
Grid Region
Pacific Northwest
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
28.8K MWh
Latest Month
196.3K MWh
Annual Generation
31.9%
Capacity Factor
2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $160.6M
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
Last updated 2026-03-14
View all articlesNo ask pi reports yet for this entity.
ask pi about Cowlitz FallsBonneville Power Administration (BPAT)
Grid Voltage
230.0 kV
Regulatory Status
RE — Regulated
Entity Type
Political Subdivision
Sector
Electric Utility