I was excited to see this article on CNN this morning.  Obama has invited 16 of the world's most influential economies to an Energy Forum in D.C. next month on April 27-28.  The article mentions a quote he said to renewable-energy companies and investors last week:

Last night I gave a talk at Georgia Tech focused on energy conservation for the group Wasted Watts.  After my spiel, one of the questions was, "When do you see America embracing sustainable principles?".