It seems Thomas Edison accidentally missed that one then...
Well... We are too dependent of electricity to get rid of it, and I can think of no other substitute... so... I guess we'll end up killign ourselves with our own technology... unless if a sulution for power better than electricity is invented. I doubt electricity will kill us as fast as fossil fuels will though...
(What about antimatter or dark matter? We're a long way off from that, but aren't those two massive power sources?)