Windmills and solar panels will be around as long as Congress keeps pouring taxpayer money into subsidizing them.
Like these stupid electric cars, they cannot otherwise exist.
From what I was seeing, and hearing, in the industry was that when the tax subsidies ran out, the owning company would shut the windmills down.
As a baseline generation method, windmills are unreliable, can only run within a narrow bans of windspeed and, as the atmospheric wind patterns are usually CW, there is only enough slack in the internal cables to allow the rotating head spin three times around before locking out/down. Then the generating utility had to dispatch a tem to 'unspin it'. They're quite expensive to run.
