The things don't work!

To get a reasonably reliable power supply from them, you either need to install several times more than you need to generate the power, so that the ones in the area the wind is blowing in can power the whole country, or you need back up power stations of some other kind.

It's not that renewables don't work, it's just they need careful though.

There is a significant amount of solar power generation being installed in the deserts of the American South-West. These work, as one of the biggest power uses is air conditioning. If it's cloudly, or dark, the A/C is not in demand. That's reliablility.