The trouble with wind (and solar and tidal) power is that the amount of power produced tends to fluctuate rapidly and be unpredictable.

Unfortunately, it's not possible to turn gas, coal and nuclear power plants 'up and down' anywhere nearly as quickly to match.

And in order to avoid blackouts, the National Grid needs to consistently produce enough for the nation's energy needs.

So the majority of the energy produced by renewable sources simply gets wasted.

It's unfortunate that more focus is not put on nuclear fusion (which doesn't create any radioactive waste or other harmful emissions). It has been shown to work on a small scale but by current estimates it'll take about 50 years before it industrial scale production becomes a reality.

I'm sure if governments really pushed the development of the technology along (as the US government managed with the Manhattan project, for example) then that could be reduced to 20 or 30 years and all our energy problems would be solved.