It still may be a relatively small amount of the total US energy supply inasmuch as the shift to clean energy still has a long way to go, but new data from the Energy Information Agency shows that in 2010 all renewable energy sources combined produced roughly 11% of total primary energy supply. That's just as much as nuclear power. And as Climate Progress points out, renewables will likely overtake nuclear power in the US later this year:
Good stuff. Even if the road ahead is long.
Since 2007, nuclear power has been flat while renewable resources have delivered 22% more primary energy. So, again, it's entirely possible if not likely that renewables will deliver more primary production than nuclear sometime this year -- and once they do pass nukes, renewables will stay almost certainly stay ahead throughout this century, given that their costs are declining, unlike nuclear.