Texas transmission and distribution zones. Five TDSPs deliver power across deregulated Texas. Each charges different delivery and capacity rates — set by the PUCT and identical across every retail provider in the zone. Knowing your zone is the first step to comparing commercial offers honestly.

Dallas–Fort Worth, the larger Metroplex, parts of West and Central Texas, and Waco.

Greater Houston, the Gulf Coast, and surrounding counties — about 2.5 million electric customers.

Corpus Christi, the Coastal Bend, the Rio Grande Valley, and Laredo.

Abilene, San Angelo, the Permian Basin, and surrounding West Texas.

Pockets across Texas including parts of the Houston metro, Lewisville, parts of Galveston County, the Big Bend region, and parts of the Panhandle.