http://www.renewableenergyaccess.com/rea/news/story?id=47522 Snowcap melting? No problem! Arid deserts in africa? No problem!
Pretty neat stuff yet I wouldn't consider the snowcaps melting and desertification a "no problem". lol
It's technology like this that makes renewables much more serious contenders. The ability to store energy and dispatch it when it's needed is the key. Doing it as cheaply as possible is also important.