Advanced Energy initiated with a Buy at Citigroup First Solar initiated with a Buy at Citigroup Target $41. MEMC Electronic initiated with a Buy at Citigroup SunPower initiated with a Buy, added to Top Picks Live at Citigroup Suntech initiated with a Sell at Citigroup Target $1.50. Trina Solar initiated with a Neutral at Citigroup Yingli Green initiated with a Neutral at Citigroup