Energy Supply - Electricity - Thermal Power

Colstrip power facility

PSE's largest generating plant

While hydroelectricity comprises the largest share of Puget Sound Energy's total power supply, electricity from natural gas- and coal-fired power plants also represents a substantial portion of PSE's supply portfolio.

Eastern Montana's Colstrip Power Project is the single largest power-generating facility PSE owns. The utility's shared ownership in Colstrip's four coal-fired power plants provides PSE approximately 700 megawatts of generating capacity.

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