One of the main premises of my story is that two or three times a year, everyone on modern day Earth over the age of 13 has a magical rule or change to the laws of physics, hereafter referred to as a "trial", imposed on them for a week. Things along the lines of being incapable of speaking, turning 12 inches tall, or falling west instead of down. I quickly realized that a lot of these trials could do catastrophic damage to society by rendering most people physically incapable of doing their jobs for a whole week. Given how much upkeep our infrastructure requires to stay standing, that could be absolutely disastrous. The problem is that I want several trials to happen over the course of the series, and I don't want them to end in an apocalypse every single time.
So a few days ago I posted a question about what would happen to the infrastructure of America if every adult on Earth turned into a ghost for a week. I did this in an effort to double-check how badly the more disruptive trials would ruin the country. It's become apparent from the answers that the answer is "very, very badly", as I feared. However, a lot of comments suggested that, as long as the very first trial's impact on human productivity is relatively tame, it might be possible to make changes to our infrastructure to make it so that society could withstand the next one.
So that's what I'd like to ask about today, once again sticking to focusing on the USA, and starting with the power grid. Here are the ground rules:
1: Humanity just dodged a bullet. The first trial humanity was subjected to, while dangerous in many ways, did very little to keep people from doing their jobs. But they know another, even worse trial could be just around the corner. The goal is to create a contingency plan, modifying the nation's power grid if necessary, to ensure that the next time something like this happens, even if it renders every adult on Earth completely incapable of doing their jobs or even going outside, the power grid will still be standing and usable when the week is over.
2: All trials always begin on a Saturday at 12:00 PM EST. They never happen on any other day or at any other time. Everyone knows this, even when they only have a sample size of one trial, because the various other supernatural elements of the story's lore also only happen in that specific timeslot.
3: The first trial was a big enough scare that the initiative to create this contingency plan is considered a high priority and all efforts to fund it have succeeded without pushback.
4: As long as the grid remains usable after the trial has ended, how the grid functions during the trial is basically irrelevant, though keeping it operational during the trial as well would be a plus.
How can the US government devise a way to make the American power grid capable of surviving a week without anyone working on it or maintaining it? The best answer will be the one that offers a method of neglect-proofing the nation's power grid that can be put into effect in the quickest timeframe on a realistic budget for the US government.