Don't want to nitpick but this touches on a topic I think worth discussing. I feel that for many people, investments in green energy are a needless sacrifice we do for the sake of the environment (and a naive sacrifice at that since other countries can just keep on emitting their greenhouse gases anyway). It follows, since we invest in green this must have its costs elsewhere like in higher gas prices and obviously then people ask -- why should we keep doing this when we are hit with economic downturn?
But really green energy is all about the unaccounted for future costs. We can burn fossil fuels now but we are going to be in a whole lot of trouble when they become more expensive and dealing with their side effects (climate change) will become expensive as well. Green energy is a solution - you don't need to care about high fuel prices and what happens in Middle East if you can get all energy from the sun and wind.