The majority of the investment community has been focusing heavily on the deflation in crude oil and natural gas prices along with the concomitant decline in energy-related stocks. This ETF even has substantial exposure to Tesla Motors (TSLA) as a function of their commitment to environmentally friendly electric vehicles. Two other funds that deserve mention in this space are the Guggenheim Solar ETF (TAN) and MarketVectors Global Alternative Energy ETF (GEX).