Boone Pickens made his billions in the oil patch, but he's looking for alternate energy to be the next big source of power for the economy. Should you follow him?

Solar stocks have been some of the best performers over the past year, but are down from their highs. Are they worth their price at these levels, or overvalued?

Most of the solar stocks are making good money, explains Lehman Brothers analyst Vishal Shah on CNBC’s Closing Bell. They’re producing real earnings growth.