Stumbled over this video from Altaeros Energies today. It's a few months old and I can't track the company down via its website (which is only returning cached results at the moment, so it could be a start-up still starting-up) but I thought the innovation was exciting. I also thought it would have enormous potential to help in certain types of disaster situations, given its transportability. There were lots of hyper-critical comments on the channel and while I'm sure it's not a perfect solution this type of thinking needs to be done. Exploring different ways to harness natural forms of energy can only be a good thing for the future.
We live in a switched-on world with an insatiable appetite for power and the poor old planet can't go on forever suffering the things we do to it for energy's sake. I hope we see more of this thinking along with a greater understanding of geothermal, photovoltaic and tidal energy generation.