Electric Water vs Slow Wind

Wind 2
For ecology reasons the use of Nuclear and Fossilised Fuels is being blamed for all the planets ailments and there are many in the ‘Green’ movement that ‘gabble’ on about closing power stations till all the lights go out all over the world, WHY? Before coal and oil the worlds population burned trees and ‘manure’ for cooking and heating which probably caused more air pollution than the present day fuels.
As Industrial grade Wind Turbines are not truly worth the money and effort how many alternate ways will we be able to generate power with Water. There are many systems on trial from large water wheels to tidal surge systems and small bucket wheels connected to generators. Perhaps even the generator end of a broken wind mill can be geared to an old water wheel?