There is alternative energy but it is not very competitive if crude oil is at 50 dollars a barrel. Most alternative energy has to be subsidized by some government wether it is sun power, wind power, they are not great yet.
At 300 dollars a barrel for crude oil they will be very competitive but at the moment we have 50 dollar a barrel oil. (PowerShares WilderHill Clean Energy ETF (PBW), United States Oil Fund LP ETF (USO), Nymex Crude Oil futures)
Jim Rogers is a legendary investor that co-founded the Quantum Fund and retired at age thirty-seven. He is the author of several investing books and also a renowned financial commentator worldwide famous for his contrarian views on financial markets.