11MWh average, 0.12 cents/kWh?! Power costs more than twice as much in Europe, and the average household uses half as much. No wonder you guys (in a twisted democratic sense of the word) aren't too fond of climate treaties.
I know you're sort of joking, but that doesn't really explain it: the places where power is cheapest in the U.S. are the places where the most renewables are used. Here in Pacific Northwest power is closer to 8 cents/kWh because it's mostly hydro; Texas is cheaper than in the surrounding South because it has more wind power, etc.