There is no usage of geothermal energy at all in Illinois.
There has been a decrease in use of coal energy from year 2007 in Total US
There has been a increase in use of natural gas from year 2007 in Total US
There has been a huge increase in use of solar energy from year 2013 in Total US
The only states that used solar energy from year 1990 to 1996 are Virginia, Texas and California