I really feel for the folks in Texas. To be going through this on top of a global pandemic...just when does it ever end?
In December 2002, there was a severe ice storm here in Charlotte and power was out for over a million people in the area. I lived in my old condo (from which I moved in January 2014) and was without power for six days, long after the ice had melted. The temperature was in the 30s outside, so I couldn't keep food out there (plus raccoons and possums), and what was in the fridge had all gone bad. There was no ice to be had anywhere for coolers.
Thankfully, I had a gas water heater, so I could take hot showers/baths, but all my other appliances were electric. It got down to 50-something in my condo. I ate sitting in the full tub one night because I was so cold. I had a woodburning fireplace, but artificial and real logs were sold out everywhere. Each night after I went to bed with my two (now passed) cats and got tucked in and snuggly, it wasn't too bad, but just sitting there alone in the cold dark for days was rough.