Stirling Solar Energy
This is an older project that also looks really promising to me. My big complaint about green energy movements is everyone has their own little pet project / idea that they want to work on, and while many are pretty viable, none will succeed this way. If the goal was really to make a huge difference quickly, the best thing to do would be to pick a few obvious winners and focus a lot of time, energy and money on them. None of these ideas will ever be cost effective if everyone is fighting for a tiny piece of the market. I think it took about 4 years to get a 1 MW plant tested and approved, and in 5 years they'll have a 500MW field set up. They claim they could get to 850MW with two additional years. Obviously the tough climb is getting started. I don't care if someone comes up with an idea that's 2% more efficient. Don't waste 5 years studying that design, lets build a GW of these guys instead.