I don't think that they "shut down" the power plants by choice. From what I read and could understand, it was more like, we shut them down because if we hadn't done so it would have led to even more problems. Just like with a car, if the engine light starts flashing, what should you do? Shut down the engine so you don't damage it.
So the issue is still that the previous administration had not done sufficient (if any) maintenance, and what happens then? Well eventually, you either HAVE to do urgent maintenance that can be VERY extensive, rather than a little all the time, or the thing that should have been maintained will just stop working.
So although I totally agree that this is very annoying with all of the power outages, it's not at all surprising and more a question of past actions (or lack of) that is causing this.