What would Warren do?

Warren Buffet has already made some investments in the energy sector, in two forms that I am aware of.

BK (Berkshire Hathaway, WB's company) owns $1.25 or so billion of Petrochina (PTR), one of the Chinese oil companies, which holds a very nice amount of reserves. He bought this at significantly lower levels, however, and could be letting some go these days.

He also bought MidAmerican Energy, a utility that owns natural gas pipelines and is also building one of the larger wind farms in America. If you like that idea, take a look at Florida Power and Light (FPL), which is also developing significant wind farms.