I've said it before...
...and I'll say it again: It's a great idea that is do-able (it's now been done a number of times) and solves two problems at once. If only the "powers that be" -- whoever they are -- will get behind this. On my part, I think this guy in the Phillipines will be more successful than those who are trying it in the U.S., where I live. "The powers that be" in the U.S. are more interested in keeping the status quo. Not only would they not back this technology, they would do whatever they could to block it since it takes the control out of their hands. And when it comes to energy, control is money.