Been getting ready for this all week. Thursday I even helped a friend buy a small genny at Lowe's, in the dark, the stores power was out registers were on back up. In the generator isle they told me he sold 4 in the past hour. When I was there they sold 5 more. I know it gets colder everywhere else, we're just not set up for it. If you have a gas furnace it can be powered easily by generator or there's always "stove heat". Yes the Transformer is inside the furnace. ERCOT has a phone app. It shows capacity and demand . So far so good, but forecast lows in the teens and twenties coming up.