Many Texans shopping for electricity on the deregulated market face a common point of confusion: why are there two different company names associated with their home’s power? You might sign up for an eco-friendly footprint with a retail provider, yet see a completely different company’s utility trucks servicing the physical power lines down your street. Understanding this division of labor is key to navigating your monthly bill, managing outages, and choosing the right energy setup for your home through a trusted platform like ElectricityOne.
The Two Halves of the Texas Power Equation
To truly understand how electricity gets to your home, you must first ask: what is a transmission and distribution service provider (TDSP)? Often referred to as a TDU (Transmission and Distribution Utility), the TDSP is the entity that owns, operates, and maintains the physical infrastructure of the grid. This includes the poles, wires, transformers, and smart meters that deliver electricity to your property.
In contrast, a Retail Electric Provider (REP) is the company that sells you the electricity. They manage your account, handle billing, and purchase wholesale power to supply your home. A premier example of a Texas REP is Gexa Energy. When you enroll in a plan like the Gexa Eco Saver Plus 12 Plan, Gexa offsets your home’s energy usage with 100% renewable energy credits for a full year. However, Gexa does not own the physical lines. Your local TDSP remains the physical entity moving those green-sourced electrons over the physical wire grid to your home.
Meet the Six Major Texas Utility Companies
While you can shop around for your REP, your TDSP is determined strictly by your physical geography. There are six major TDSPs operating within the ERCOT grid in Texas:
- Oncor: The largest TDSP in Texas, servicing Dallas-Fort Worth, Waco, Wichita Falls, and parts of West Texas.
- CenterPoint Energy: Serving the greater Houston metropolitan area and surrounding communities.
- AEP Texas Central: Covering southern parts of the state, including Corpus Christi and Laredo.
- AEP Texas North: Servicing northern and western regions, including Abilene and San Angelo.
- Texas New-Mexico Power (TNMP): Serving scattered pockets of Texas, including communities near Houston, DFW, and West Texas.
- Lubbock Power & Light (LP&L): The newest addition to the deregulated competitive market, transitioning its customers into ERCOT’s infrastructure.
Why the REP vs. TDSP Distinction Matters
Understanding this distinction is vital for two primary reasons: billing transparency and emergency response.
First, your monthly electricity statement will always include TDSP delivery charges. These are regulated pass-through fees approved by the Public Utility Commission of Texas (PUCT). They cover the cost of maintaining the grid and reading your meter. Whether you choose a standard plan or an eco-friendly green energy plan, these delivery charges are passed through to the consumer without any markup from your chosen REP.
Second, if your lights go out or you see a downed power line, you should not call your REP. Because your TDSP owns and maintains the physical equipment, they are the ones responsible for restoring power. Keeping your local TDSP’s emergency contact number handy ensures a faster response during an outage.
Simplify Your Energy Decisions with ElectricityOne
Navigating the relationship between utility companies and retail providers can feel overwhelming, but ElectricityOne is here to simplify the entire process. Here is how we help you find the perfect match for your home:
- Over 20 Years of Experience: We have spent two decades providing reliable, quick, and courteous electric service for Texas homes and businesses.
- Meticulous Provider Selection: We only partner with top-tier REPs that offer substantial cost savings and long-term customer satisfaction.
- Total Cost Transparency: We ensure all TDU pass-through charges and retail supply rates are clearly disclosed, preventing any unexpected billing surprises.
- Expert Local Guidance: We help you understand exactly which utility company services your area and how that impacts your plan options.
By partnering with trusted providers like Gexa Energy, ElectricityOne ensures you receive premium customer care, competitive pricing, and access to innovative renewable plans, all while keeping you fully informed about the underlying utility infrastructure that keeps your home running.
Ready to find the best energy plan for your specific utility delivery area? Call 1.844.567.2863 today to speak with our Texas energy experts.
Frequently Asked Questions
What is the difference between an REP and a TDSP?
A Retail Electric Provider (REP) sells you electricity plans and handles your billing. A Transmission and Distribution Service Provider (TDSP) is the utility company that physically delivers the electricity to your home, maintains the power lines, and responds to power outages.
Can I choose a different TDSP to lower my delivery charges?
No. Your TDSP is determined solely by your physical location. Because they own the physical infrastructure in your area, you cannot change your TDSP. However, you can choose your REP to secure better supply rates and renewable energy plan options.
Are TDSP delivery charges the same across all retail providers?
Yes. TDSP delivery charges are regulated and approved by the Public Utility Commission of Texas (PUCT). They are pass-through fees, meaning every REP in a specific utility service territory passes these exact same costs directly to the consumer without markup.


