Since the 2008 crash, the renewable energy sector in the US has been steadily growing, not even a downturn that almost every other sector has experienced. When I think of the Manhattan Project, which went from a small nuclear explosion in a Chicago lab to two full blown nuclear bombs in just five years, I simply cannot believe this nation won't go for the gold at the end of this rainbow. Not only is this transition a necessity for human life to avoid extinction, there's an absolute fortune to be made. Done right, it's a win-win for capitalists, entrepreneurs, unions, workers, and living beings in general.
FDR would have been all over this opportunity in a heartbeat, and he too was surrounded by some pretty fierce corporatists. There's only way I can think of to make this transition in five years time is with Bernie Sanders at the helm and a social movement in the streets demanding this change.
(One small caveat: I don't support a capitalist system, just sayin'..)