FSLR, ENPH, and NEE are three oversold solar energy stocks to keep an eye on FSLR Testing Key Trendline ENPH Cooling Off In Warmer Weather Another Alternative Energy Stock to Monitor Oversold Everywhere You Look The solar sector is filled with promise, but not necessarily profit at the moment. The solar exchange-traded fund (ETF) Invesco Solar ETF (TAN) is down 45.7% in the last 12 months, but are two of the funds' larger holdings ready to rally? First Solar Inc (NASDAQ:FSLR) stock is down 2.6% to trade at ...