I still think the Mike Waters design beats the piss out of these ridiculously massive and complex beasts that only last 20 years at best. Seems an incredible amount of dangerous effort and waste considering the output. As with rooftop solar, tens of thousands of small, cheap, roof mounted windmills could take up much of the slack when the Sun don't shine. Plus they could all be built, owned, and maintained locally, according to local specs and needs. Grid power will always be needed for backup, but it needs to be decentralized as much as possible.