How coal-fired electricity is produced in Colstrip, Montana, and turns on the lights in Western Washington

Generating electricity via coal at the Colstrip plant is a long, complicated process, with air and water pollution as a byproduct. Click the « and » buttons above to step through each stage, from mining to combustion.
Sources: Esri,, 2017 PSE Integrated Resource Plan
Hal Bernton, Mark Nowlin and Thomas Wilburn / The Seattle Times