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LPRO: LEGISLATIVE POLICY AND RESEARCH OFFICE BACKGROUND BRIEF agreement. In 2017,² the IOUS accounted for 63.8 percent of Oregon's retail electricity sales, while 37 COUS accounted for 31.5 percent of sales. Five ESSS supplied the remaining 4.7 percent. The COUs purchase most of their power from the Bonneville Power Administration (BPA), a large federal power marketing agency that owns and operates 31 hydroelectric projects and 15,000 miles of transmission lines across the Pacific Northwest.3 ELECTRICITY GENERATION AND CONSUMPTION The Oregon Department of Energy reports that for 2014-2016, hydroelectric power supplied 40.47 percent of the state's consumption, followed by 31.89 percent from coal (mostly from imports of electricity from out-of-state coal-fired power plants), 16.58 percent from natural gas, and a growing percentage from nonhydroelectric renewables, led by wind at 6.49 percent.4 Fuels Used to Generate Electricity Consumed in Oregon This information is based on a three-year average (2014-2016). Oregon consumes an average of 48,157,378 MWh of electricity each year. This graph illustrates the resources responsible for Oregon's electricity that is ultimately sold and distributed to utility customers. Wind 6.49% 3,124,236 MWh Nuclear 3.25% Hydro 40.47% 19,488,884 MWh Coal 31.89% 15,358,984 MWh Natural Gas 16.58% 7,983,566 MWh Fuel Hydro Coal Natural Gas Wind Nuclear Biomass Solar Geothermal Biogas Waste Petroleum Other Biogenic Other Non-Biogenic Landfill Gases Others 2 OPUC 2017 Oregon Utility Statistics, p.1., https://www.puc.state.or.us/docs/statbook2017.pdf 3 https://www.bpa.gov/news/AboutUs/Pages/default.aspx 4 https://www.oregon.gov/energy/energy-oregon/Pages/Electricity-Mix-in_Oregon.aspx August 8, 2019 Page 2

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