First Trust Global Wind Energy ETF ( FAN) -3.4% The alternative energy sector is facing substantial headwinds as developed nations work diligently to pare back their spending and cut down debt. The wind energy industry is getting hit particularly hard at the end of the week, leading FAN to test previous all-time lows. Solar energy is not being left out of today's sell off. On the contrary, the Guggenheim Solar ETF ( TAN) is suffering notable losses as well. All prices as of 2:14 PM EST Written by Don Dion in Williamstown, Mass.