Do You Think Clean Energy Stocks Will Be the Stocks of the 21st Century.?

I think companies that provide clean energy like solar, wind and nuclear power, will be some of the best traded stocks of the future. I think they will replace Exxon, Shell and Standard Oil companies this century. It may be a few years down the road, but I think all of us can see this coming.

Suggestion:

geothermal is better than all you mentioned. free energy literally in your back yard