>>1109true, humans aren't the most efficient. I suppose it's worth bringing up passive energy generation though, such as capturing kinetic energy from underneath sidewalks and what not.
For those in this thread, an interesting read regarding a future without electricity and much greater integration of sustainable, closed loop farming systems is; "The fifth sacred thing" by Starhawk.
A little idealistic, and a little liberal, but still worth reading just to see yet another version of utopia might be to some people.