If you have ever stared at your Texas electricity bill and wondered why the math does not match the "rate" you signed up for, the answer is usually the TDU delivery charge. It is one of the most misunderstood lines on the bill, and it explains why two people paying the same per-kWh energy rate can still owe different amounts. Here is a plain-English breakdown of what these charges are and how they work.
What is a TDU?
TDU stands for Transmission and Distribution Utility. In Texas's deregulated market, the company you pick your plan from (your Retail Electric Provider) and the company that physically delivers the power to your home are two different businesses.
Your TDU owns the poles, wires, transformers, and the meter on the side of your house. They are the ones who restore power after a storm and who read or remotely poll your meter. You do not choose your TDU; it is assigned by where you live. The major Texas TDUs are:
- Oncor — North and West Texas, including Dallas and Fort Worth
- CenterPoint Energy — the greater Houston area
- AEP Texas — Central, South, and parts of East and West Texas, including Corpus Christi
- Texas-New Mexico Power (TNMP) — scattered service areas across the state
You may also hear the older term "TDSP" (Transmission and Distribution Service Provider). It means the same thing.
What does a TDU delivery charge actually pay for?
Your energy charge pays for the electricity itself. Your delivery charge pays to move that electricity from the power plant, across high-voltage transmission lines, down through the local distribution wires, and into your meter. It also covers maintaining that equipment and keeping the lights on after outages.
Every Texas customer on a competitive plan pays a delivery charge. It is not an optional add-on and it is not a fee your provider invented. It is a regulated, pass-through cost set by your TDU and approved by the Public Utility Commission of Texas (PUCT).
Key insight
Your TDU delivery charge is the same no matter which retail provider you choose. Two neighbors on the same TDU pay identical delivery rates. The part that actually differs between providers is the energy charge.
How TDU charges are structured
TDU delivery charges almost always come in two parts:
- A fixed monthly charge — a flat amount you pay every billing cycle just for being connected, regardless of how much power you use.
- A per-kWh delivery charge — an amount added for every kilowatt-hour you consume, on top of your provider's energy rate.
These rates are published by each TDU and are updated periodically (typically twice a year) with PUCT approval. Because they are regulated and identical across all providers in a given territory, the only honest way to know your current delivery rate is to check today's published TDU schedule or read it off a plan's Electricity Facts Label. Rather than quote a number that may be stale, we always point customers to the live figures for their exact address.
How delivery charges show up on your bill and your EFL
On most Texas bills, the delivery charge is bundled into your total so you see one combined price per kWh. That is convenient, but it is also why the "rate" you remember signing up for does not always match what you paid.
The document that breaks it all down is the Electricity Facts Label (EFL). By law, every Texas plan has one. The EFL shows the average price per kWh at three usage levels (typically 500, 1,000, and 2,000 kWh) with TDU delivery charges already included. That is the number you should compare between plans, because it reflects what you will really pay, not just the headline energy rate.
Why your average rate changes with usage
Because part of the delivery charge is a flat monthly fee, the more electricity you use, the more that fixed cost gets spread out, which lowers your average price per kWh. This is exactly why an EFL lists different average prices at 500, 1,000, and 2,000 kWh. A plan that looks cheap at 2,000 kWh may be expensive for a small apartment that only uses 500 kWh a month. Always match the EFL usage tier to how much you actually use.
Why this matters when you compare plans
Some providers advertise an eye-catchingly low energy rate and then make it back through higher fees or unfavorable usage tiers. Because the TDU delivery charge is fixed and identical for everyone in your territory, it is a level playing field, but it also means a "low rate" headline can be misleading if it leaves delivery charges out of the picture.
The smart move is to ignore the marketing number and compare the all-in average price on the EFL at your real usage level. That is the apples-to-apples figure.
Where Energy Direct fits in
We are a local, independent Ambit Energy consultant. Tell us your ZIP code (or better, your service address) and we will help you compare the all-in plans available where you live, delivery charges included, so you are comparing real prices, not marketing rates. When you pick a plan, Ambit handles the switch end to end. There is no service interruption and no need to call your old provider.
Bottom line
TDU delivery charges are the regulated, pass-through cost of physically moving electricity to your home. They are the same across every retail provider in your territory, they come as a fixed monthly fee plus a per-kWh charge, and they are already baked into the average prices on every plan's Electricity Facts Label. To compare plans honestly, look at the all-in EFL price at your real usage level, not the advertised energy rate, and check the live numbers for your specific address.
Frequently asked questions
Is the TDU delivery charge a scam or a hidden fee?
No. It is a legitimate, regulated cost approved by the PUCT, and every Texas customer on a competitive plan pays it. It is not something your retail provider profits from or can waive.
Can I shop around for a cheaper delivery charge?
No. Your TDU is assigned by location and cannot be changed by switching providers. What you can shop for is the energy rate and plan terms, which is exactly where choosing the right plan saves money.
Why is the delivery charge different in Houston versus Dallas?
Because those areas have different TDUs (CenterPoint in Houston, Oncor in Dallas), each with its own PUCT-approved delivery rates. The cost of building and maintaining the local grid varies by territory.
How do I find my current delivery charge?
Check the Electricity Facts Label for any plan in your area, which shows the all-in average price including delivery, or look up your TDU's published delivery schedule. Easier still, send us your ZIP and we will pull the live, address-specific numbers for you.