ROCKY REACH

How ROCKY REACH compares

With 1,300 MW of capacity, ROCKY REACH ranks 3rd among the 126 operating power plants Bywatts maps in Washington and 3rd of the 65 operating Hydro plants in the state. It accounts for about 6.2% of Washington's operating Hydro capacity and 4.3% of all operating capacity in the state. Nationally it is the 11th-largest of the 1,243 operating Hydro plants in the database. Commissioned in 1961, it is older than 69% of the 125 operating Washington plants with a recorded commissioning year. Its operator, PUD NO 1 OF CHELAN COUNTY, runs 3 operating plants in Washington totaling 1,988 MW. It shares Chelan County with 3 other operating plants, including WELLS and ROCK ISLAND.

EIA-860 lists 11 generators at the site with 1,300 MW of nameplate capacity, all conventional hydroelectric technology. Net generation was 4,901 GWh in 2024 (a 43% capacity factor), down 24% from 2022. Its generators came online between 1961 and 1974.

Grid neighborhood

The nearest named substation is ROCKY REACH (345 kV), about 0.2 miles away; the closest transmission line found within 10 miles is a 230 kV line owned by PUD NO 1 OF CHELAN COUNTY, under 0.1 miles away. Another 2 operating power plants totaling 689 MW sit within 25 miles; the largest is ROCK ISLAND (629 MW, Hydro).

Computed by Bywatts from HIFLD power plant, substation and transmission line records and EIA-860/923 survey data; distances are straight-line. Sources and methodology