My son’s family were caught in one of those “rolling blackouts” that did not roll off his house for almost 24 hours. The house was at 50 by the time they left when they came over to warm up over night.
I’m here in Texas. I normally don’t turn on my heat, but I have left it on 60° this week. I usually put on a sweater instead of a tee when it’s chilly, and even put on a pair of socks. Bad part is going out as the streets aren’t cleared, and I don’t have covered parking so clearing off windows is a pain. Went to grocery store today and the shelves were completely empty, but I just went to get a couple things. And water is down to a dribble. They have warm places for people to go sleep. I don’t get it, however in the summer I have the A/C on and can barely go out in the heat.
Camping indoors works great, as long as you leave off the open flame part. If you have room, put up a tent, and break out the sleeping bags. Make sure the surface under you is insulated by something.