Whose power gets shut off during winter storms — and for how long?

Investigative Summary:
A year after a winter storm led to a cascading power failure that left millions of Texans in the dark and cold, most of the pressure has been on the state's natural gas wells and power plants that froze up during the storm. When the cold gripped those power generators, ERCOT forced power providers — such as Oncor and Austin Energy — to shut off power to as many customers as they could to keep the whole system from collapsing. KXAN Investigators dug into what y