Coal is used to generate electricity in 48 states. U.S. Energy Information Administration, Electric Power Monthly, March 2012 edition, Table 1.7.B, “Net Generation from Coal by State by Sector, Year-to-Date Through December 2011,“ http://www.eia.gov/electricity/monthly/epm_table_grapher.cfm?t=epmt_1_7_b.
Coal is used to generate 50 percent or more of the electricity in 20 states. U.S. Energy Information Administration, Electric Power Monthly, March 2012 edition. http://www.eia.gov/electricity/monthly/index.cfm.
Coal is used to generate 25 percent or more of the electricity in 30 states. U.S. Energy Information Administration, Electric Power Monthly, March 2012 edition. http://www.eia.gov/electricity/monthly/index.cfm.
Only Rhode Island (mostly natural gas) and Vermont (mostly nuclear) do not generate any electricity with coal. U.S. Energy Information Administration, Electric Power Monthly, March 2012 edition. http://www.eia.gov/electricity/monthly/index.cfm.