I suspect it's just part of the bigger problem of keeping the grid in balance - too much generation at any point in time is just as disruptive as too little - similar to paying heavy industry to reduce their demand (which I gather they also do in various ways) - wind has the nice feature of being very switch-on-and-off-able - far faster response than any thermal generation station - so is in many ways a good choice for fine tuning grid balance.
I suspect it's just part of the bigger problem of keeping the grid in balance - too much generation at any point in time is just as disruptive as too little - similar to paying heavy industry to reduce their demand (which I gather they also do in various ways) - wind has the nice feature of being very switch-on-and-off-able - far faster response than any thermal generation station - so is in many ways a good choice for fine tuning grid balance.
