If you live in the Lone Star State, your physical address dictates far more than just your school district or property taxes—it also determines exactly how your electricity is delivered and what you pay for it. While Texas is famous for its deregulated energy market, many residents do not realize that the company selling them electricity is not the one actually delivering it to their homes. Understanding this division of labor is the key to mastering your energy bill.
Who Actually Delivers Your Power? Meet the TDSPs
In Texas, Transmission and Distribution Service Providers (TDSPs)—often simply called utility companies—are responsible for maintaining the physical power lines, poles, and meters. Unlike retail electric providers (REPs), you cannot choose your TDSP; they are determined solely by your geographic location.
The Big Four Texas Utility Companies
Depending on where you live, you fall under one of the four major TDSPs:
- Oncor: Serves the Dallas-Fort Worth metroplex, West Texas, and parts of Central Texas.
- CenterPoint Energy: Powers the Houston metropolitan area and surrounding Gulf Coast regions.
- AEP Texas: Splits into North and Central/South divisions, covering places like Corpus Christi and Abilene.
- Texas-New Mexico Power (TNMP): Services various pockets across the state, including parts of the Gulf Coast and North Texas.
How TDSP Charges Impact Your Monthly Bill
Even when you shop around to compare Texas electricity rates, your final monthly cost includes non-negotiable TDSP delivery charges. These fees are regulated by the Public Utility Commission of Texas (PUCT) and are passed directly from the utility to your retail provider, who then adds them to your bill. Because these delivery fees vary by utility zone, the same retail plan can cost more in Houston than it does in Dallas.
Average prices per kWh displayed on plans are calculated based on standard 1,000 kWh or 2,000 kWh monthly usage blocks. These estimates incorporate both the retailer’s energy charge and the fixed and variable local charges from your regional TDSP.
Important Rate Disclaimers and Independent Support
When shopping, keep in mind that electricity service offers can be fixed or variable. The rates displayed on our platform are gathered directly from each provider’s Electricity Facts Label (EFL) for comparison purposes only. Rates are subject to change based on utility adjustments and are only finalized when your service agreement is completed.
Please note that BulbOne is an independent resource designed to help you navigate these regional complexities. We are in no way associated with PowerToChoose.org, which is operated by the PUC of Texas. Our goal is to serve as your expert guide to finding the best, most cost-effective, and reliable cheap electricity plans in Texas.
Want to check the most competitive rates available in your specific Texas zip code? Just call 1-844-567-2863 to speak with our local energy experts today.
Frequently Asked Questions
What is a TDSP and do I get to choose mine?
A TDSP (Transmission and Distribution Service Provider) is the utility company that maintains the physical electrical grid in your area. You cannot choose your TDSP, as they are assigned strictly by geographic territory.
Why does my electricity rate change based on my monthly usage?
Retail plans are priced using standard 1,000 kWh or 2,000 kWh monthly usage blocks. Your actual price per kWh varies because TDSP delivery fees consist of both flat monthly fees and volumetric charges that change based on how much power you consume.
Is BulbOne affiliated with the state’s official shopping website?
No. BulbOne is an entirely independent platform helping consumers explore their power to choose. We are not associated with PowerToChoose.org or the Public Utility Commission of Texas.
