SUB purchases all its electricity from Bonneville Power Administration, an agency created by Congress to sell electricity generated from the federal government’s hydroelectric dams on the Columbia River*. From there, it travels to one of SUB’s eight substations, where it is distributed along more than 4,600 transformers and 400 miles of powerlines to 30,000 residential, commerical and industrial customers.

* See these short video clips for more about the ways Northwest rivers benefit our region:


BPA power mix