Power plant · EIA plant code 6200
Rock Island
- Operator
- PUD No 1 of Chelan County - (WA)
- Location
- Chelan, WA (county level only)
- Balancing authority
- Public Utility District No. 1 of Chelan County (CHPD)
- Nameplate capacity
- 629.4 MW
- Summer capacity
- 503.2 MW
U.S. Energy Information Administration · Annual Electric Generator Report (Form EIA-860) · data for 2025 · as of Sep 10, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Sep 10, 2027. Last checked for an update: Oct 31, 2026.
Generation in 2025
- Net generation
- 2,226,611 MWh
- Capacity factor
- 40.4%
Capacity factor is net generation divided by nameplate capacity times the hours each generator was in service that year, counted by month.
U.S. Energy Information Administration · Power Plant Operations Report (Form EIA-923) · data for 2025 · as of Sep 11, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Sep 11, 2027. Last checked for an update: Oct 31, 2026.
Emissions
eGRID2023 (revision 2) reports no carbon dioxide for this plant.
Emissions are for 2023, the newest eGRID year. Generation is for 2025, the newest EIA-923 year.
U.S. Environmental Protection Agency · Emissions & Generation Resource Integrated Database (eGRID) · data for 2023 · as of Jun 16, 2025 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Jan 31, 2026. Last checked for an update: Oct 31, 2026.
Generators
| Generator | Technology | Energy source | Nameplate | Operating since | Status |
|---|---|---|---|---|---|
| A | Conventional Hydroelectric | WAT | 1.2 MW | 1931 | Operable · As of September 2026 (EIA-860M): (OP) Operating |
| B-1 | Conventional Hydroelectric | WAT | 20.7 MW | 1931 | Operable · As of September 2026 (EIA-860M): (OS) Out of service and NOT expected to return to service in next calendar year |
| B-10 | Conventional Hydroelectric | WAT | 22.5 MW | 1953 | Operable · As of September 2026 (EIA-860M): (OP) Operating |
| B-2 | Conventional Hydroelectric | WAT | 20.7 MW | 1931 | Operable · As of September 2026 (EIA-860M): (OS) Out of service and NOT expected to return to service in next calendar year |
| B-3 | Conventional Hydroelectric | WAT | 20.7 MW | 1932 | Operable · As of September 2026 (EIA-860M): (OP) Operating |
| B-4 | Conventional Hydroelectric | WAT | 20.7 MW | 1932 | Operable · As of September 2026 (EIA-860M): (OP) Operating |
| B-5 | Conventional Hydroelectric | WAT | 22.5 MW | 1952 | Operable · As of September 2026 (EIA-860M): (OP) Operating |
| B-6 | Conventional Hydroelectric | WAT | 22.5 MW | 1952 | Operable · As of September 2026 (EIA-860M): (OP) Operating |
| B-7 | Conventional Hydroelectric | WAT | 22.5 MW | 1952 | Operable · As of September 2026 (EIA-860M): (OP) Operating |
| B-8 | Conventional Hydroelectric | WAT | 22.5 MW | 1953 | Operable · As of September 2026 (EIA-860M): (OS) Out of service and NOT expected to return to service in next calendar year |
| B-9 | Conventional Hydroelectric | WAT | 22.5 MW | 1953 | Operable · As of September 2026 (EIA-860M): (OP) Operating |
| U-1 | Conventional Hydroelectric | WAT | 51.3 MW | 1979 | Operable · As of September 2026 (EIA-860M): (OP) Operating |
| U-2 | Conventional Hydroelectric | WAT | 51.3 MW | 1979 | Operable · As of September 2026 (EIA-860M): (OP) Operating |
| U-3 | Conventional Hydroelectric | WAT | 51.3 MW | 1979 | Operable · As of September 2026 (EIA-860M): (OP) Operating |
| U-4 | Conventional Hydroelectric | WAT | 51.3 MW | 1979 | Operable · As of September 2026 (EIA-860M): (OP) Operating |
| U-5 | Conventional Hydroelectric | WAT | 51.3 MW | 1978 | Operable · As of September 2026 (EIA-860M): (OS) Out of service and NOT expected to return to service in next calendar year |
| U-6 | Conventional Hydroelectric | WAT | 51.3 MW | 1978 | Operable · As of September 2026 (EIA-860M): (OP) Operating |
| U-7 | Conventional Hydroelectric | WAT | 51.3 MW | 1978 | Operable · As of September 2026 (EIA-860M): (OP) Operating |
| U-8 | Conventional Hydroelectric | WAT | 51.3 MW | 1978 | Operable · As of September 2026 (EIA-860M): (OP) Operating |
U.S. Energy Information Administration · Monthly Update to the Annual Electric Generator Report (Form EIA-860M) · data for 2026-09 · as of Oct 23, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0 May be out of date. The next release was due by Nov 23, 2026. Last checked for an update: Oct 31, 2026.