They don't.
And I am opposed to those mandates. And opposed to the anti-fracking dingbats. But that doesn't change the fact that this was a weather-related phenomenon, possibly aided in places by spot opposition to tree-trimming around power lines. But some storms go beyond that, when they bring down the entire tree on a power line and not just an overhanging limb.
References to coal should be left to industry veterans.
You certainly did not grasp all the ramifications I cited for outages. Of course storms precipitated the events, but continued outages were prolonged by all the reasons mentioned by other FR posters: Inability to trim trees, lack of maintenance on infrastructure because of EPA mandates steering capital away from transmission upgrades, etc.