I urge you to read this post by solar entrepeneur David Bergeron, explaining why if you are in favor of alternative energy you should oppose subsidizing it:
Here is the real problem: Subsidies make solar appear viable today, so where is the motivation for an entrepreneur to risk money, or even focus on developing real energy alternatives when solar is “almost” there? How can an inventor justify striving with the effort it takes to really develop something great when he is competing against a straw man technology which can provide power at almost the same cost of traditional power sources today? But of course it really doesn’t.
The answer is he can’t justify the effort, so the next great thing is not developing, at least not with the sense of urgency it should be. Why enter a contest when you are competing against someone with an unfair advantage? You may be the faster swimmer, but your competitor is using flippers.
Read the whole thing.