The county emergency management plan should have each building have a plan in place to cut back to security level lighting, 45 degrees on the thermostat, air handlers for key areas only (prevent frozen pipes), standby power on all data centers (huge power hogs).
If this had been done in Lubbock, DFW, Austin, Houston and San Antonio, then the blackouts that knocked out the natural gas distribution would not have been necessary. The gas network would not have frozen over. In essence, the dominoes would not have started falling.
Poor preparation by the counties is an element of this that should not be ignored.
Gas distribution that relies on the grid for heat is not robust. Wind is worse: there's no choice with wind but to heat the gear oil from the grid.