We're also recommending that investors take advantage of major discounts on an alternative-energy exchange-traded fund that holds a wide range of companies involved in cleantech, including 
Energy Conversion Devices   (Nasdaq: 
ENER), 
ReneSola   (NYSE: 
SOL), and 
Yingli Green Energy   (NYSE: 
YGE).
 Granted, many of these stocks have been pounded into the ground, along with the rest of the solar sector and the market as a whole. But as the market begins its eventual recovery and the Obama administration begins to make good on its promise to make a massive investment in green energy, these stocks present a compelling profit opportunity.