Water power is about as close to perfect as you get. Only thing is you can only put it in a few places.

 

Not true fusain power would be the best solution. No waste non at all. And it also makes more power than fission. Just we haven't refined it enough yet. They have a fusain reactor in MIT's basement tell them to start doin more tests.

 

Yeah Fusion is cool. I forgot about that.

 

Hydro power totally messes up the local ecosystem... solar and wind energy are the only really "free" usable methods, unfortunately they are inefficient and require an inconsistent power source (wind and sunlight).