I think the two best options that are out there at this point are nuclear and geothermal. I think we need to do some serious research on the ramifications of tapping into geothermal energy though. I think that the problems with disposal of nuclear wast present a problem, but I have confidence that that could be overcome. I also don't hate the idea of water power on a small scale, but it may prove to be controversial. People are getting pretty uptight about water now and days.