where coal is king

From the US Energy Information Administration statistics.  Percent of electric energy generated from coal. 

This will differ from what you get at the outlet as distribution is regional.  Some states, like Rhode Island, purchase most of their power elsewhere.  Also note this many of the states burn other fossil fuels - this is not an indication of which states are doing well with carbon dioxide emissions, but anything over 40% is very high. 

Alabama 55.4
Alaska 9.2
Arizona 38.7
Arkansas 46.4
California 1.0
Colorado 71.5
Connecticut 12.3
Delaware 69.2
Florida 29.2
Georgia 67.2
Hawaii 13.4
Idaho 0.6
Illinois 47.6
Indiana 94.8
Iowa 75.6
Kansas 75.1
Kentucky 92.3
Louisiana 26.8
Maine 1.9
Maryland 60.1
Massachusetts 24.4
MIchigan 60.2
Minnesota 60.1
Mississippi 39.2
Missouri 84.5
Montana 60.5
Nebraska 65.3
Nevada 22.8
New Hampshire 17.6
New Jersey 17.9
New Mexico 80.1
New York 14.7
North Carolina 60.3
North Dakota 93.5
Ohio 85.9
Oklahoma 49.7
Oregon 4.4
Pennsylvania 56.0
Rhode Island 0.0
South Carolina 39.8
South Dakota 46.5
Tennessee 64.8
Texas 36.5
Utah 89.3
Vermont 0.0
Virginia 46.9
Washington 5.9
West Virginia 97.5
Wisconsin 65.0
Wyoming 94.5

US 49.0