The full list of states with their rankings can be found here.  I was having trouble explaining how Louisiana, Iowa, and Kentucky got onto the top 10 list.  I could explain the other states based on their very cold average temperatures, and in the case of Texas, it's very high average temperature, but could not explain the others.  For a list of the average temperature per state check out this post.  By taking a look at how we use energy in the United States, I stumbled upon a clue that might explain their high energy usage per capita.  You can check out a graph on how we use erergy in the United States here.  After looking at the graph I noticed that over 30% of our energy is used for Industrial purposes.  It turns out that Lousiana, Iowa, and Kentucky have a big manufacturing sector in their economies.  For more information on the "state" of manufacturing in the us, check out this post.  

Top ten list

Wyoming :  280103 BTUs per person per year

Alaska :  265958 BTUs per person per year

Louisiana :  219751 BTUs per person per year

North Dakota : 193665 BTUs  per person per year

Iowa: 138187 BTUs per person per year 

Texas : 133664 BTUs per person per year 

South Dakota : 130071 BTUs per person per year

Kentucky : 127539 BTUs per person per year

Nebraska : 123953 BTUs per person per year

Montana : 123784 BTUs per person per year