Investor Presentaiton

High-quality utility operations Puget Sound Energy Seattle City Light Tacoma Power Portland General Electric Powerex Bonneville Power Administration PacifiCorp Avista NorthWestern Energy Idaho Power PacifiCorp BANC NV Energy Turlock Irrigation District California ISO Arizona Public Service Los Angeles Dept. of Tucson Electric Water & Power Power Public Service Company of New Mexico Salt River Project Market Operator California ISO EIM entity 11 (1) 2012 through 2019 Active participant Planned EIM entry 2020 Planned EIM entry 2021 Planned EIM entry 2022 Western Energy Imbalance Market • Highly dependable generation fleet with eight-year average availability of 92% (1) Strong power supply portfolio management and western EIM integration to enhance reliability and optimize resources Transitioning away from coal-fired generation Investment plans to provide safer and more reliable service to our customers Smart grid opportunities to incorporate more renewables, decarbonize, power the transportation network and integrate demand side resources PGE

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