Texas Electric Utility Map

When you purchase electricity in Texas, there are actually two companies involved in the sale. The Retail Electricity Provider (REP) sells energy plans to homes and businesses, while the Transmission and Distribution Utility (TDU) delivers that energy to the point of use with power lines and transformers. 

You can choose your electricity provider, but your TDU is determined by your address, since only one company is in charge of the power grid for a given area.

• TDUs are also called TDSPs (Transmission and Distribution Service Providers).

• Your local TDU is who you call when there are power outages and other emergencies related to the ERCOT grid.

There are five electric utility providers in Texas:

Oncor, CenterPoint, AEP Texas North, AEP Texas Central and TNMP.

Most of the Dallas/Fort Worth metropolitan area is served by Oncor, and Houston is home to CenterPoint. AEP North delivers power to Abilene and surrounding areas, while AEP Central covers Corpus Christi and the Rio Grande Valley. TNMP service locations include Lewisville and many Gulf Coast communities.