As some of you my have noticed I like to mock the idea that wind can take over for fossil fuels.
Here is the Actual Wind Production versus the day ahead prediction.
Purple is the the 1450MW of power wind could generate (and never does).
Green is actual. Notice it goes to zero several times and under 200MW a bunch of times.
And several of those low stretches last a whole day!
sunshine hours 
and our ‘dear leader’ is pushing ahead with “clean” energy….along with higher prices! I did not vote for “Nutley”!!
Their forecasts are better than I thought they would be, but it still shows how variable wind is as well as the forecasts getting it wrong.
In the UK & Europe we quite often get multiple days of almost Zero output, in fact many windfarms will be drawing from the grid during that period to keep the blades rotating to prevent Bearing Brinelling.