On the top of the list is REQUIRING utilities to generate 15% of their energy from renewable sources by 2020. If my math serves me well, that is about eleven years from now. :-2
Does anyone seriously think that if renewable energy were a viable option, a cost effective option, a technically feasible option that utilities in the US would not be anxious to pursue that alternative in their best interests? :-5
I have worked for one of the largest of such utilities for over 47 years and we are looking at all such options, we looked at battery storage twenty years ago, we have tried solar and now are investing in wind, we just plunked down $20 million in a new concept to store wind power.
The problems are many such a reliability, adequate transmission lines, the “not in my back yard syndrome among them.
So, now I harp on my favorite theme, unintended consequences. The last thing we need is Grandma Pelosi and friends to legislate mandates for energy in a nearsighted attempt to appease certain groups and make the uniformed public feel good.
The point is that safe, reliable less polluting sources of energy is what everyone wants including the utilities, but that will happen not because some politico says it will, but because the public demands it and is willing to pay for it, I say again, is willing to pay for it.
No doubt you are happy with your current electeric and gas bill.

Nuclear energy remains the least costly of the non-polluting energy sources (that is once the federal government gets off it duff and after twenty years decides what to do with spent fuel).
It appears we have not learned our lessons from the auto industry where Congressional mandates resulted in cars people didn’t want to buy. And, by the way, have you tried to find a plug in electric station lately?
The next time you hear what sounds like a great idea from Grandma and Harry think “are there any unintended consequences or don’t they matter.