Commercial rate guide for CPS Energy — San Antonio, Texas and Bexar County. Largest municipally owned electric and gas utility in the United States.
E4 (commercial general service), E5 (large commercial primary), and E6 (large commercial transmission) rate schedules. Demand charges on all commercial rates. Fuel adjustment applied monthly. Lower rates than most Texas IOUs due to municipal ownership.
Rising
4.2% overall rate increase effective February 2026 approved by San Antonio City
4.2% overall rate increase effective February 2026 approved by San Antonio City Council for infrastructure investment
Property managers with CPS Energy accounts frequently encounter these billing challenges:
Power cost adjustment factor changes monthly
Demand charges during ERCOT summer peak events
Not part of deregulated ERCOT market (municipal exemption) causing confusion
Gas rate schedule complexity for dual-fuel properties
Regulatory fee pass-throughs from ERCOT participation
The utility is the sole provider in this service territory.
CPS Energy is a municipal utility exempt from Texas deregulation. Customers cannot choose alternative suppliers. Rates set by San Antonio City Council.
Strategic energy plan update with renewable integration costs under review by City Council; no state regulatory filings (municipal utility)
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