BP Statistical Review of World Energy 2014
bp.com
bp.com
What is intriguing however is just how big oil - BP, Shell, Exxon etc - are really going to move away from the fossil cash cows in the future when the stuff gets too expensive to extract or when everyone moves onto something else.
Definitely, renewables is a huge opportunity for new entrants, possibly the biggest economic opportunity in business today in many ways given what's at stake.