Pick the one who makes more sense, and go with that.

Justwait

or

http://www.ted.com/talks/donald_sado...o_renewable_en
ergy.html

Also google Vanadium Redox flow Battery.
This stuff is happening pretty fast.
Good, because the obvious problem with solar/wind is storage.
I don't know how it will all work out, but it will.
If we don't listen to the nattering nabobs of negativism.

Here's another choice.

Justwait

or

http://www.youtube.com/watch?v=OqokqE5dRmM

It's up to you.