Check out this cool app created by The University of Texas at Austin Energy Institute. It allows you to see what the lowest electricity generation source is on a county level throughout the US. Seeing the levelized cost of electricity (LCOE) is interesting but should not be confused with the retail cost of electricity. Based on a quick look it appears that the LCOEs reflected are lower than retail residential but higher than commercial electricity rates.
120 St. Louis Ave Ste. 133
Fort Worth, TX 76104