Land based windfarms are probably everything you say. The massive offshore windfarms that keep appearing around our coasts are another beast.
The amount of energy available in wave and tidal power is massive, but the engineering problems to be solved are also equally massive for the time being. Much to be said in trying to solve those however, and lots of people are having a damned good go. As an engineer (amongst other things) the idea of working on that sort of technology I personally find nearly as exciting as working on flying machines. Nearly!
Nuclear power has issues undoubtedly. One of those is the difficulty of waste, another is safety - they do need to be put somewhere very stable, which really really means not in an earthquake zone. Another is that because they got unfashionable in the 80s and 90s, we're down a generation of nuclear engineers and there's a massive amount of new training and education needed. And then also, they need to deal with the waste issue and to be fair, it's not trivial. Although, the quantity of genuinely nasty stuff is very low - the bulk of nuclear waste is things like tools and protective clothing that have been contaminated and are best off in a hole in the ground. But there's no real hazard, and no weapons potential, to that stuff.
What were we talking about again?
G