Interesting Theory

I was thinking about scientific systems. I was thinking about renewable energy sources, and it got me wondering.

What if instead of electricity, the world's technology ran entirely or primarily on thermal and solor energy? What would happen if this energy source could generate electrity?

I don't know if anyone's doing this yet. I haven't studied up on it, but the idea just sort of came to me. I thought it would be an interesting concept to share in my blog. Get on that, Scientists and Engineers!