Does Southern Federal Power Serve My CenterPoint Energy ZIP Code? Last updated: September 28, 2026 Yes. Southern Federal Power offers residential electricity plans throughout the competitive areas of the CenterPoint Energy service territory. This includes Houston and many surrounding communities across Southeast Texas. Enter your ZIP code and service address at SouthernFederal.com to see the plans currently available for your home. A ZIP code is only the starting point. Some ZIP codes cross utility boundaries, so the complete service address determines whether CenterPoint Energy delivers electricity to the property. What Does CenterPoint Energy Do? CenterPoint Energy is the Transmission and Distribution Utility, or [...]