The amount of investment in renewable energy has passed that in fossil fuels for the first time.
Electricity from the wind, sun, waves and biomass drew $187 billion last year compared with $157 billion for natural gas, oil and coal, according to calculations by Bloomberg.
Source, LA Times: http://www.latimes.com/business/la-fi-renewables-20111125,0,2421278.story
This related story has a nice graphic showing how the cost per unit of solar electricity has fallen since the 1970s: