There are many different carbon-free energy sources available across the Pacific Northwest, including hydro, solar, wind and biomass. Hydropower is unique because electricity generation can be increased/decreased on many projects, allowing it to help balance wind and solar production that can vary with the weather. This reliability feature is why some people refer to hydropower in the Pacific Northwest as the grid’s battery system. For the PUD, hydropower is key to reliably meeting community electricity needs and helping both the utility and region transition to a cleaner energy future.
Hydroelectric power accounts for more than 85%of the PUD’s portfolio of generating resources. Contracts for Bonneville Power Administration projects supply most of our hydropower (~75%). PUD’s owned-and-operated resources provide another ~10%; these include the Henry M. Jackson, Woods Creek, Youngs Creek, Calligan Creek, and Hancock Creek hydroelectric projects.