What about wind farms? Plenty popping up all over Europe.
They're big and ugly and the same as any of this stuff - most people say not in my backyard.
But worth a look at before building big greenhouse emitting desalination plants, wasting money on building dams
More R & D into solar, wind and tidal, I reckon.
Nuclear energy works, but it's terribly expensive and while they're more progressed from Chernobyl that that kind of thing more than likely wouldn't happen, there is still an element of risk of the castastrophic.