200MW solar tower being built in Australia,
I was browsing the net and found this really bizarre, but ingenious power plant:
It will be the first full size commercial one in the world, although a very small 50KW one was built in the 1980's and proved they do work. What surprised me is that they work 24/7 because of the thermal mass heats the air overnight and keep the air flowing through the turbines. They're almost a solar thermal battery that charges during the day.
Apparently Enviromission have exclusive rights to the technology in Australia. I can imagine that if it's successful there will be a demand for more, both in Australia and across the world. The idea that you can just build this 200GW power plant which uses no fuel and creates no emissions or waste, is amazing. Of course 200GW isn't as impressive as it used to be, it's the same output as the Calder Hall nuclear plant which was considered vast in the 1950's, and now seems rather tiny next to the vast 1500GW reactors being built today. However, the fact it uses no fuel and has no environmental consequences (other than redeveloping land) makes it impressive enough.