I see you got downvoted.

Your comment touches on topics outside the current article and its discussion. The reason is that Electrical grid balancing has been commented elsewhere; the economic operation of plants has also been commented in other discussions; if wind is blowing - there is energy left on the table without it being used; if operating a plant on fossil fuels, those fuels still have to be delivered. Wind energy is variable input, but review data on its variability over span of days.

Overall, having variable input of energy in an electrical grid is not the blocker. It is also an extensive - and ‘done enough for now’ area of research.

The variability is not what has slowed down wind energy deployments.