System Maintenance: On Sunday, August 14, 2022 from 1:00 AM to 5:00 AM, our EZ Pay credit card payment processing may not be available; however, you may make a payment by logging in to Manage My Account.  You may report an outage online or by calling (210) 353-4357. Our Storm Center Map and visibility to bills in Manage My Account may not be available during this maintenance.


A portable generator can be an ideal secondary source of power––especially during power failures. But it can be dangerous if it’s not used appropriately.  Before operating a generator, read the manual, make sure you understand it, and call a professional if you have any doubts.

Here are some safety tips:

  • Generators should be placed at least 25 feet from a home or building
  • Never use a generator in an enclosed space
  • Make sure your generator is properly grounded
  • Generators should not be connected directly to household wiring except by a qualified electrician.
  • Use only 3-prong extension cords with appropriate watts or amps ratings
  • Never overload your generator
  • Connect using a ground fault circuit interrupter (GFCI), and
  • Turn off all appliances powered by the generator before shutting it down

Some dangers associated with generators include:

  • Shocks and electrocution
  • Carbon monoxide poisoning
  • Fires caused by unsafe fuel handling, and
  • Noise and vibration hazards