Transmission and Delivery Utility Charges Cover the Physical Maintenance of the Local Power Grid, but You Can Still Offset These Costs by Shopping for Lower Energy Supply Rates
Key Takeaways
- TDU charges pay for the physical delivery of electricity to your home and the ongoing maintenance of local neighborhood grids.
- While you cannot avoid or shop around for TDU delivery charges, they are heavily regulated and officially approved through state utility commission proceedings.
- Consumers living in deregulated markets can easily offset high fixed delivery fees by comparing and choosing cheaper retail supply rates.
Opening your electric bill to find unexpected fees is frustrating, especially when industry acronyms hide the true cost of powering your home. In a deregulated energy market, a large portion of your bill goes to your local utility — known interchangeably as a Transmission and Delivery Utility (TDU), a Transmission and Distribution Utility (TDU), or a Transmission and Distribution Service Provider (TDSP). These regulated fees fund the poles, wires, and smart meters that keep your lights on. We break down what TDU delivery charges cover, why they change, and how to offset them by shopping for lower supply rates.
What Is a Transmission and Delivery Utility (TDU)?
A Transmission and Delivery Utility (TDU) owns, operates, and repairs the physical infrastructure that routes electricity to your neighborhood. Whether your bill calls them a TDU, a transmission and distribution utility, or deals in TDSP charges, their job is identical. They maintain the wooden utility poles on your street, the high-voltage transmission lines spanning the highway, and the digital smart meter attached to your house.
Think of TDU delivery charges as the shipping fee for your electricity. You aren’t paying the utility for the raw energy itself, but rather for the safe, reliable transportation of that power to your doorstep. On your monthly statement, these fees appear as TDU pass-through charges. Because you don’t pay the utility company directly, TDUs bill Retail Electric Providers (REPs) for grid upkeep, who then pass the exact fee to the consumer on their monthly invoice with zero markup. This revenue directly funds 24/7 emergency repair crews during severe storms and routine grid maintenance that prevents neighborhood blackouts.
🚩 Heads Up: You cannot choose your TDU company, as they are strictly assigned based on your geographic location and service address.
How the Deregulated Energy Market Works: Generators, TDUs, and REPs
To understand why your electric bill is split into multiple parts, it helps to look at how the power grid is organized. Deregulated states separate the electricity supply chain into three distinct pillars so no single company holds a total monopoly over your wallet:
- 1. Power Generators: These companies produce the actual electricity using natural gas, wind turbines, solar farms, or nuclear plants, selling that power on the wholesale market.
- 2. Transmission and Delivery Utilities (TDUs/TDSPs): These regulated monopoly companies own the physical grid — including high-voltage transmission lines, substations, local poles, and residential smart meters — and move power from the plants to your home.
- 3. Retail Electric Providers (REPs): These are the competitive, customer-facing companies that buy wholesale power from generators, package it into residential rate plans, and handle your monthly billing and customer service.
Energy Delivery vs. Supply Charges
When comparing a retail electric provider vs utility on your statement, your total cost is divided into two halves. Knowing the difference between energy delivery and supply charges helps you see exactly where your money goes and which portion you can actually control.
- Energy Supply: This charge pays for the raw electricity generated by a power plant. Because the electricity market is deregulated in many states, supply prices are fully shoppable. You have the freedom to compare retail energy providers and switch plans for a better rate.
- Energy Delivery: This charge pays your TDU for the physical poles, wires, and transformers needed to move that electricity. Delivery fees are regulated by state utility commissions and are assigned based on your home address, making them unshoppable.
How to Find Your Assigned TDU by City and Region
Knowing your assigned transmission and distribution utility is essential when you’re setting up new service or need to report a power outage. Because the state assigns utility territories strictly by geography, your address dictates which company maintains your local lines. With the recent transition of Lubbock Power & Light (LP&L) into the competitive retail market, Texas now has six major deregulated utility territories.
| Major Texas Region / City | Mandated TDU Company |
|---|---|
| Houston, Galveston, Surrounding Gulf Coast | CenterPoint Energy |
| Dallas, Fort Worth, Waco, Midland, Odessa | Oncor Electric Delivery |
| Corpus Christi, Laredo, Rio Grande Valley | AEP Texas Central |
| Abilene, San Angelo, Vernon | AEP Texas North |
| Texas City, Lewisville, Dickinson | Texas-New Mexico Power (TNMP) |
| Lubbock and surrounding South Plains region | Lubbock Power & Light (LP&L) |
Current 2026 TDU Delivery Charges for Major Texas Utilities
The Public Utility Commission of Texas (PUCT) updates delivery tariffs periodically to cover the real-world cost of maintaining local grid infrastructure. These approved rates include two main components: a flat monthly base charge simply for staying connected to the grid, and a volumetric per-kWh charge that scales with your energy usage. Checking current Oncor delivery charges, CenterPoint TDU charges, or Texas-New Mexico Power delivery charges gives you an accurate baseline of your unavoidable monthly costs before you even shop for an electricity plan. Below are the official Fall 2026 PUCT tariff rates across all six Texas TDUs at standard 500 kWh, 1,000 kWh, and 2,000 kWh usage tiers.
| Utility Company | Monthly Base Charge (Customer + Metering) | Volumetric Per-kWh Charge | Total TDU Cost at 500 kWh | Total TDU Cost at 1,000 kWh | Total TDU Cost at 2,000 kWh |
|---|---|---|---|---|---|
| Oncor Electric Delivery | $4.06 ($1.48 Customer + $2.58 Metering) | 6.0295¢ | $34.21 | $64.36 | $124.65 |
| CenterPoint Energy | $4.90 ($2.11 Customer + $2.79 Metering) | 6.5333¢ | $37.57 | $70.23 | $135.57 |
| AEP Texas Central | $3.24 ($1.27 Customer + $1.97 Metering) | 5.7000¢ | $31.83 | $60.42 | $117.59 |
| AEP Texas North | $3.24 ($1.27 Customer + $1.97 Metering) | 5.6000¢ | $31.26 | $59.27 | $115.30 |
| Texas-New Mexico Power (TNMP) | $7.56 ($1.70 Customer + $5.86 Metering) | 7.7710¢ | $46.42 | $85.27 | $162.98 |
| Lubbock Power & Light (LP&L) | $0.00 | 6.3120¢ | $31.56 | $63.12 | $126.24 |
Customer Charges vs. Metering Charges Explained
If you compare your retail electric bill against official PUCT tariff sheets, you might notice that the flat “Monthly Base Charge” is actually a bundled fee. Retail providers combine two distinct utility tariffs — the Customer Charge and the Metering Charge — into a single line item for simpler billing. Understanding the metering charge vs customer charge breakdown shows you exactly what that flat monthly fee supports before you even flip on a light switch.
The Customer Charge covers the utility’s baseline account administration, billing coordination with your REP, and general grid readiness for your service address. Meanwhile, the Metering Charge pays for the installation, physical maintenance, and continuous wireless data reading of the residential smart meter attached to your home. While most Texas utilities charge between $3.24 and $7.56 per month for these combined fees, Lubbock Power & Light (LP&L) currently structures its residential tariff with a $0.00 monthly base fee, recovering its infrastructure costs entirely through its per-kWh rate.
How to Calculate Your Delivery Charges
Knowing how to calculate TDU charges on your own is simple once you have your utility’s base fee and volumetric rate. You can find both numbers on your monthly statement or your plan’s contract documents. Use these two formulas to estimate your monthly costs:
- Delivery Cost = Base Charge + (Monthly kWh Usage × Delivery Rate)
- Total Electric Bill = Supply Charges + Delivery Cost + Applicable Taxes and Fees
For example, if you live in the Oncor service territory, you pay a $4.06 combined base charge and a 6.0295¢ (or $0.060295) per-kWh delivery rate. If your home uses exactly 1,000 kWh in a billing cycle, your math looks like this: $4.06 + (1,000 × $0.060295) = $64.36 in total TDU delivery charges.
Do TDU Pass-Through Charges Change on a Fixed-Rate Plan?
One of the biggest surprises for Texas homeowners happens when their “fixed-rate” electricity bill suddenly goes up in the spring or fall. Locking in a fixed-rate electricity contract only freezes the Energy Supply Rate charged by your Retail Electric Provider. It does not freeze the regulated delivery fees charged by your local utility company.
By law, REPs include a regulatory pass-through clause in every residential contract. This clause allows them to automatically adjust the TDU portion of your bill whenever the PUCT approves new utility tariffs on March 1 and September 1. While your provider cannot touch your agreed-upon supply rate for the length of your contract, your overall price per kilowatt-hour will still shift slightly twice a year to reflect updated TDU pass-through charges.
💡 Pro Tip: If your fixed-rate per-kWh price suddenly increases mid-contract, it is almost always due to a biannual TDU pass-through adjustment rather than a contract breach by your provider.
How to Spot TDU Charges on Your Electricity Facts Label (EFL)
When you’re shopping for a new energy plan, the most important document to review is the Electricity Facts Label (EFL). It works just like a nutrition label for your electricity contract, breaking down every supply and delivery fee tied to the plan. Checking the TDU section on an EFL ensures you aren’t caught off guard by baseline fees.
At the top of the EFL, the retail provider displays an average price per kilowatt-hour at three standard usage tiers: 500 kWh, 1,000 kWh, and 2,000 kWh. Those advertised average rates already bake in your local TDU fees. To see how much goes to your provider versus your utility, look at the “Disclosure Chart” or itemized charge breakdown in the middle of the sheet:
- TDU Delivery Charges (Base): This is the flat monthly fee (Customer + Metering) your utility charges to keep your address connected to the grid, whether you use 10 kWh or 10,000 kWh.
- TDU Delivery Charges (Per kWh): Also called the volumetric or consumption charge, this variable fee scales directly with every kilowatt-hour of electricity you pull from the grid.
📌 Quick Fact: Always read the fine print on an EFL. Even if a provider advertises an incredibly low energy rate, high fixed utility fees can still make the plan expensive if you live in a small apartment and use very little electricity.
Why Do TDU Delivery Fees Fluctuate?
It never feels great when delivery fees creep up, but TDU rate increases are tied to verified grid expenses rather than corporate markups. Utilities across the ERCOT grid must continually build new substations and upgrade lines to support booming suburban populations and power-hungry home technology. Severe hurricanes, ice storms, and high winds also force utilities to spend hundreds of millions of dollars rebuilding downed poles and weatherizing equipment.
Thankfully, utilities cannot raise rates on a whim. Every price adjustment must pass a formal audit by the Public Utility Commission (PUC). In Texas, the PUCT reviews and updates standard TDU tariffs twice a year — on March 1 and September 1. Notably, September adjustments often include seasonal “Transmission Cost Recovery Factor” (TCRF) increases to pay for peak summer grid demand, while March updates frequently drop slightly once those seasonal recovery costs expire. You can explore the U.S. Energy Information Administration’s breakdown of factors affecting electricity prices to see how infrastructure investments impact residential bills nationwide.
Emergency Outages: TDU Contact Numbers and Trackers
When a storm knocks out your power, calling the retail provider listed at the top of your bill will only slow you down. Your REP handles billing and rate plans, not bucket trucks. To report a blackout, a downed power line, or a damaged smart meter, you need to contact your assigned TDU directly.
Save the 24/7 outage phone number and bookmark the live outage map for your local Texas utility below so you aren’t scrambling in the dark during an emergency.
| Utility Company | 24/7 Outage Phone Number | Digital Outage Tracker |
|---|---|---|
| Oncor | 1-888-313-4747 | Available on Oncor.com |
| CenterPoint Energy | 1-800-332-7143 | Available on CenterPointEnergy.com |
| AEP Texas (North & Central) | 1-866-223-8508 | Available on AEPTexas.com |
| Texas-New Mexico Power (TNMP) | 1-888-866-7456 | Available on TNMP.com |
| Lubbock Power & Light (LP&L) | 1-806-775-2509 | Available on LPandL.com |
How Delivery Charges Work in Other Deregulated States
While Texas has the largest deregulated energy market in the country, several other states offer energy choice programs with similar delivery fee structures. The core rule remains the same across state lines: you can shop for your electricity supply on the open market, while your local utility delivers the power and charges regulated tariffs for grid upkeep.
Pennsylvania
In Pennsylvania, local utilities like PECO, PPL Electric Utilities, and Duquesne Light are called Electric Distribution Companies (EDCs). When you choose a competitive supplier through PA Power Switch, your new supply rate replaces the utility’s default “Price to Compare,” while your EDC continues to bill fixed and per-kWh distribution charges.
Ohio
Ohio residents use the Energy Choice Ohio marketplace to shop for generation rates. Whether your home is serviced by AEP Ohio, Duke Energy, or AES Ohio, you pay a state-regulated delivery fee to your local utility alongside the supply rate from your chosen retail supplier.
Illinois
Illinois residents serviced by ComEd or Ameren can choose an Alternative Retail Electric Supplier (ARES). Your selected supplier sets your power generation price, while ComEd or Ameren continues to manage your meter, respond to outages, and charge regulated delivery fees on your monthly statement.
Actionable Ways to Lower Your Overall Electric Bill
Because you cannot negotiate TDU rates with your utility, lowering your total kilowatt-hour usage is the only way to shrink the variable portion of your delivery charges. Since over 90% of a typical TDU bill comes from the per-kWh volumetric fee, every kilowatt-hour you save cuts both your supply cost and your delivery cost at the same time.
Try these practical, environmentally mindful choices around your home to curb your monthly usage:
- Install a smart thermostat to automatically dial back heating and cooling schedules while you sleep or leave for work.
- Swap out heat-generating incandescent bulbs for energy-efficient LED lighting, which uses up to 75% less electricity and lasts years longer.
- Upgrade to ENERGY STAR certified appliances when replacing older refrigerators, washers, or dishwashers, as these models are tested to pull far less electricity from the grid.
- Seal drafty windows and doors with weatherstripping and caulk to stop conditioned air from leaking outside.
🌱 Eco Edge: Reducing your total energy consumption does more than just lower your monthly TDU fee. It directly decreases your household’s overall carbon footprint, making it a powerful win for both your wallet and the environment.
Beyond conservation, your best financial move is to compare deregulated electricity plans and lock in a low fixed supply rate. Dropping your retail supply price by just two or three cents per kilowatt-hour easily offsets seasonal TDU increases. Check out our guide on strategic ways to reduce your electricity usage for more everyday tips, and use official state marketplaces when you are ready to compare actual market prices on the Texas Power to Choose website.
Preparing Your Household Budget for Seasonal TDU Rate Adjustments
Because the PUCT updates Texas TDU tariffs like clockwork on March 1 and September 1, you never have to be blindsided by delivery rate adjustments. Mark these two dates on your calendar and review your electric bill the month before they take effect. Shop for a lower retail supply rate in late winter or late summer if your contract is expiring, and knock out quick seasonal maintenance — like replacing dirty HVAC air filters and clearing debris from your outdoor condenser unit — right before September 1 and March 1. Pairing a lower supply rate with a tune-up keeps your household budget insulated from biannual grid fee hikes.
Frequently Asked Questions About Transmission and Delivery Utilities
Can my TDU delivery charges increase if I am locked into a fixed-rate electricity contract?
Why do TDU rates usually go down in March and go up in September?
Is Lubbock Power & Light (LP&L) a Transmission and Delivery Utility?
What is the difference between a TDU Customer Charge and a Metering Charge?
Do retail electricity providers profit off of TDU delivery charges?
Can I shop around for a cheaper TDU company?
Do solar panels eliminate transmission and delivery fees?
About the Author
LaLeesha has a Masters degree in English and enjoys writing whenever she has the chance. She is passionate about gardening, reducing her carbon footprint, and protecting the environment. She also recently served as President of the Board for City Sprouts (a community garden).
David has been an integral part of some of the biggest utility sites on the internet, including InMyArea.com, HighSpeedInternet.com, BroadbandNow.com, and U.S. News. He brings over 15 years of experience writing about, compiling and analyzing utility data.