That's great and all, but...
1.) When I say turbines I mean fixed wired to the grid gas powered turbines, that kick on to fill energy needs as needed. You're talking about turbines of a different sort, like wind and/or sea powered. First, you need to get through all the lawsuits, which means first getting through all the environmental studies. Then, once those are all done, you might have a shot. Maybe. In the meantime, a decade or two, where does all the needed energy come from?
2.) The storage mediums to store that much power are no where as far as availability, they're years away, if that (meaning: more).
3.) Even if they were here, that doesn't help when you've got multiple sustained days of "green" energy shortage. Once they're exhausted, and if they're exhausted that means you're still not keeping up with current demand, which means, you're not putting energy back into these storage mediums, what then? Now you still need something that can power a whole metro area.
4.) You (We) could work on changing the social value of a larger house, however, having a large house is nice. No rational couple with 2 kids is going to want to stay in some cramped EU/Japan like POS when they can get a 2400 sq. ft. house that gives them breathing room and their own personal space.
5.) Storing nuclear waste from a modern reactor I don't believe (from past discussions on here) is really an issue given our needs, timescales, and emerging green technologies. It's possible we need only 1-2 more rounds of nuke power, and then we'll be green/mostly green. The amount of nuke waste those 1-2 rounds generate is inconsequential given our needs (including availability and reliability) and the timeframe needed.
Chuck