CPS Energy’s offices, customer service centers and call center will be closed Monday, January 17 in observance of Martin Luther King Jr. Day. During the closures, customers can report natural gas or electric emergencies by calling 210-353-HELP (4357) or 1-800-870-1006 24/7. Read More.

All Walk-in Customer Service Centers have modified their hours of operation to Monday through Friday, 10:30AM to 5:00PM. This change will remain in effect until further notice. We encourage the use of a face-covering at any CPS Energy facility. 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.

Service Disconnections for non-payment resumed in 2021. If you are experiencing financial hardship, we urge you to contact us for help. Call us at 210-353-2222 or online at cpsenergy.com/assistance. Stay up to date by following us on Facebook Twitter. More info: Newsroom Events.

Nuclear Energy

 
STP Nuclear Plant-83

Environmentally friendly and dependable power from STP

CPS Energy has used nuclear energy as a part of its energy portfolio for more than three decades. Today, nuclear energy meets about one-fourth of San Antonio’s annual electrical requirements, second only to coal.

CPS Energy has used nuclear energy as a part of its diverse portfolio of fuel sources for more than three decades. 

Nuclear power is obtained for our customers via the South Texas Project (STP) located in Bay City, Texas. CPS Energy owns a 40 percent stake in STP (NRG Energy of Texas owns 44 percent, while Austin Energy owns 16 percent). STP units 1 and 2 generate 1,088 megawatts of power for our customers.

Because nuclear energy produces no greenhouse gas emissions it’s considered a clean-air energy. When compared to other generation staples like coal, natural gas or renewables, nuclear energy is considered more capable of meeting the demands of a customer base that is still growing.

Nuclear is 14.1% of our generating capacity.

South Texas Project

South Texas Project - Nuclear 101