There is intense optimism that the country can become the "cradle of clean energy."
A report suggests that the U.S. is losing its edge in the clean energy market.
Sun-powered "SolarPumps" help concertgoers keep phones, laptops and even scooters charged up.
Rare earth minerals are key to advanced technology, but almost all come from China.
Surprisingly, it works better than conventional energy-efficiency programs.
Florida Power and Light has built a solar power plant linked to a natural gas plant.
Novel technologies from the energy agency's first conference.
Loan guarantees will help finance 400 megawatts of solar power.
What could that mean for attempts to grow solar manufacturing in the United States?
It promises to back loans for the first new nuclear reactors in decades.