The Customer Protection Rules of the Public Utility Commission of Texas (PUCT) provide that certain customers may be eligible for designation as Critical Care or Chronic Condition Customer (Residential).
Please be aware that chronic condition or critical care status does not guarantee an uninterrupted, regular, or continuous power supply. If electricity is a necessity, you must make other arrangements for on-site back-up capabilities or other alternatives in the event of loss of electric service
Critical Care or Chronic Condition Customer (Residential) – A copy of the PUCT application is provided here for your convenience. Link