2,500 40 2,000 kWh (Billions) Share of Total Generation (%) 50 30 20 1,500 1,000 10 0 500 2006 2009 2012 2015 - 2018 2006 2009 2012 2015 2018 (a) 60 60 50 50 40 40 (%) (%) 30 20 10 10 0 2006 2020 Coal 2020 Natural Gas AK Nuclear 2020 Nonhydro Renewables MT OR Hydropower 2020 Other ME MN West UT AZ WI SD WY CA IL CO KS OK NM TX HI VT NY NH MA NortheastRI MI Midwest IA NE MO WV VA NC TN AR LA IN CT NJ DC MDDE PA OH KY SC South 100 mi 80 70 60 50 40 30 20 10 0 2006 ND ID 550 mi NV 0 Northeast 80 70 60 50 40 30 20 10 0 2006 WA West 0 Midwest 30 20 0 2006 South (%) 70 80 70 (%) West 80 AL GA Midwest MS FL West 0 95 190 380 mi N State Region Northeast South West (b) figure 1. (a) The total U.S. electricity generation by energy source. (b) The regional share of total electricity generation by energy source. Nonhydro, nonhydroelectric. (Source: U.S. Energy Information Administration.) 76 ieee power & energy magazine july/august 2019