Service Disconnections for non-payment resumed in September as we move toward normal business operations. Read more here  If you are experiencing financial hardship, we urge you to contact us for help. Call us at 210-353-2222 or online at Stay up to date by following us on Facebook and Twitter.  More info: NewsroomStorm Updates & Events

We encourage the use of a face-covering at any CPS Energy facility. Our customer service center hours are 7:45 AM to 5:00 PM Monday-Friday. If you have tested positive, or a family member has tested positive for COVID-19 in the last 14 days, please use our online tools or call 210-353-2222 for assistance.  Please do not visit our customer service center if you have COVID-19 symptoms.

Energy Delivery


Delivering reliable power to our customers

We use a diverse array of fuels to generate reliable electrical service for your home or business. To deliver it, we use a sophisticated distribution system. Here’s how it works:

  1. Electricity travels through a transformer that "steps up" or increases the voltage, which allows the power to travel more efficiently over a long distance through large transmission lines.
  2. Transmission lines carry this ramped-up electricity to distribution substations. Banks of transformers step down the electricity's voltage, so it can travel through smaller distribution lines to residential and commercial districts throughout the service area.
  3. The power then travels by overhead or underground power lines to transformers on telephone poles or underground. These transformers reduce the voltage again so it can be safely delivered into your home and business.
  4. Electricity travels into buildings through wires called service drops. The service drops connect to a meter box, which measures the amount of electricity being used by a customer. The drops also connect to all of the wires that run inside a home or building’s walls to outlets and switches.
  5. When an electrical device is plugged in, electricity flows from the electrical wires in the wall through a plug's metal prongs, which then carries power through the appliance cord to the motor of the appliance. After powering the device, it then flows back through the appliance cord to the outlet, out to the wires and into the grid again.

Distributing energy is only part of the process. At CPS Energy, we constantly work to ensure the quality and reliability of our energy sources too. This means we:

  • Continually measure electrical power quality.
  • Maintain an active Power Quality Program, so customers can report any issues they’re having.
  • Developed and are implementing a Strategic Energy Plan to ensure our resources for years to come.