Texas (Austin): Austin Energy Storm Center.
Texas (southeast of Austin, including Bastrop): Bluebonnet Electric Outage Viewer. The map depicted shows damage to the system from the Bastrop County Complex Fire and was added on September 9, 2011.
Texas (Dallas/Fort Worth): Oncor Outage Information.
Texas (Houston): CenterPoint Energy Outage Tracker.
Texas: Texas New Mexico Power Service Areas. (no outage map)