$iShares Global Clean Energy ETF(ICLN)$ Oil prices reached $147.30 in July 2008. There is still some ways till peak oil. Along with that in 2008, the media started to promote clean energy because well the price of the technology could finally seem to be able to match oil prices. This finally settle to 20++ in 2009 and gradually reduced as oil fell. There's still at least a year to watch this ETF grow to above 22. But definitely not a good price to enter if you're looking for a long term thing.