To keep prices competitive, Washington diversifies its energy portfolio. The greatest contributor is hydroelectric power, which generates close to 7,700 gigawatts per hour (GWh) annually. Other significant sources of electricity are nuclear (812 GWh), natural gas (290 GWh) and coal (192 GWh). Renewables, which account for 912 GWh, include wind, solar and geothermal. As a result, the state offers electricity at a 35 percent discount from the national average.
Generally, the generation of electricity is unrelated to anything on your bill. Power plant companies generate electricity and sell it to utilities as well as retail electricity providers in deregulated areas. The electricity is then resold to you, the customer. Transmission and distribution is taken care of and charged to you by your utility, regardless of what company supplies the electricity. These charges are separate from the supply portion of your bill.