Power plant · Washington, United States
Rock Island
Rock Island is a power plant in Washington, United States, with 629 MW of capacity, owned by PUD No 1 of Chelan County - (WA).
Facts
Every value links to its source, and to the source's own record where it has one. Licences and last-checked dates are per row.
| Fact | Value | Source |
|---|---|---|
| Location | Washington | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Status | Operating | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Start year | 1931 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Owner | PUD No 1 of Chelan County - (WA) | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Operator | PUD No 1 of Chelan County - (WA) | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Capacity | 629 MW | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Technology | Conventional Hydroelectric | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Coordinates | 47.3461, -120.0917 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
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How it compares
Rock Island is the 14th-largest of 17 power plants in Washington and the 562nd-largest of 800 in the United States by capacity; its 629 MW is <0.1% of the 839,036 MW we hold for the United States. Ranks and totals cover the power plants in our data that report their capacity, not every one in existence. Power plants planned, permitted or under construction are ranked apart.
| Within | Rank | Total | Share |
|---|---|---|---|
| Washington | 14th of 17 | 22,161 MW | 2.8% |
| United States | 562nd of 800 | 839,036 MW | <0.1% |
| All power plants in our data | 610th of 4,829 | 1,037,268 MW | <0.1% |
Owner, operator and place
More from PUD No 1 of Chelan County - (WA)
- Rocky Reach1,349 MW
Other power plants in Washington
- Grand Coulee6,809 MW
- Chief Joseph2,456 MW
- Rocky Reach1,349 MW
- Wanapum1,220 MW
- Columbia Generating Station1,200 MW
- Boundary1,160 MW
- Priest Rapids950 MW
- Wells867 MW
Data on this page
- Source: U.S. Energy Information Administration (Sep 2026). EIA-860 / 860M / 923, Public domain.
- Bundesnetzagentur, Marktstammdatenregister. Marktstammdatenregister, DL-DE-BY-2.0.