Where does electricity come from?
If you mean the source of electric power, probably 50% is generated in coal burning plants and 20% in nuclear plants with most of the rest coming from natural gas.
All jokes aside (you guys did realize that my first response was a joke, right?) it's closer to 60% from coal. That's why I always get a kick out of hearing environmentalists argue for electric cars as if electricity is clean energy compared to oil. They don't take into consideration the emissions from burning coal to produce electricity.
Electric cars for energy independence from Arab oil, absolutely!
Electric cars for no/low emissions, poppycock. That is unless the large majority of electricity is produced using wind, solar, and hydro power.