The most obvious problem is, that if your response to a sudden disruption is too slow and not close enough to the site of the disruption, then you are going to lose the solar panels that shut down. And if this happens in the middle of a sunny day, then that is a lot of power.
Possibly there will have been some scheduled or unscheduled maintenance of backup generators or a failure in bringing backup online quickly.
In the end it is all about risk management.