This is a double-refer, so to speak, when it comes to blog points. Just read this morning on EarthTechling and Inhabitant about new technology from a Danish company called Floating Power Plant, which is sort of a wind farm on a boat.
Actually, the prototype pictured above (this is a company-supplied photo, but I grabbed it off EarthTechling via Inhabitant) is a hybrid wave power and wind machine, which ironically uses the same sorts of principles to stay afloat that an oil rig would use. Some statistics: