System Maintenance: Starting on Saturday, April 20th from 7 PM to Sunday, April 21st at 4 AM, we will be performing maintenance on our systems. During this time, Manage My Account, all other web portals, customer alert notifications, and our automated phone system will be unavailable. EZ Pay credit card payment processing and visibility to bills in Manage My Account will be unavailable until Sunday, April 20th at 5 AM. We will still be able to process emergency gas and electric requests by calling 210-353-HELP (4357) or 1-800-870-1006.
Cooling Lakes and Parks
Braunig and Calaveras Parks are open to full capacity.
From generation to cool recreation
For nearly four decades, San Antonio area visitors and residents have enjoyed the natural beauty of our two cooling lakes, Calaveras and Braunig. We invite you to join the more than 250,000 visitors each year who fish and boat on the lakes. Or picnic and camp in the lakeside parks.
Braunig and Calaveras Lakes, located in southeast Bexar County, were built in the late 1960s to provide cooling water for equipment at nearby power plants. Following a record drought in San Antonio in the late 1950s and desires to conserve Edwards Aquifer water for drinking purposes, CPS Energy turned to treated wastewater from the San Antonio River to fill the two reservoirs. We were one of the first utilities in the nation to use treated sewage effluent for power plant cooling. Today, the idea continues to pay dividends. By using recycled wastewater in the lakes rather than fresh water, more than 40,000 acre feet of drinking water from the Edwards Aquifer are conserved each year.
Thousand Trails Management Services, Inc. (TTMSI) manages the operation of the parks. For more information on the parks, contact TTMSI:
- Braunig Lake: 210-632-4128 or Email Braunig Lake
- Calaveras Lake: 210-635-8359 or Email Calaveras Lake
- Or email: CPS Energy Complex
Braunig and Calaveras Lake Parks are located southeast of San Antonio:
- Braunig Lake Park - 17500 Donop Road, Elmendorf, Texas
- Calaveras Lake Park - 12991 Bernhardt Road