The model I am speculating about is more rigidly bound to the intermittency profile of each local wind farm: up to the point that a mining container is not even connected to the grid - but to the farm directly => mining uptime is smaller (depending on how often the given farm is curtailed).
Um not connected to the grid?
That then raises the question of why was the wind farm was built? Wind (and solar) farms are not built as stand alone operations - they are connected to the electric grids to aid in supplying power to at least the local areas supplanting what can be bought in through the grids. It is far too expensive to build a farm to just power miners. Since the farms are connected to the grid then so are the miners.
It does have to be mentioned that the local excess power problem that miners address will not last forever as the US has several major transmission line upgrades & new construction underway to take power from states like Iowa, Montana and, Nebraska that have major wind/solar installations and move it to the rest of the country. Those should be done in about 10 years so it will be interesting how mines cope with that once the 'excess power problem' goes away...
Even Texas which once was pretty much stand-alone with only 3 ties (and fairly low power at that) to the National Grid has at least 6 new major connection points under construction to provide power to surrounding states.