Last Updated on January 4, 2023 by Mary Pressler

Texas TDU Delivery Charges

TDU Delivery Charges Have Increased

When you pay a power bill in Texas, there are actually two companies billing you for their service:

  • Retail Electricity Provider (REP): The company selling you the energy.
  • Transmission and Distribution Utility (TDU): The company in charge of the local grid, and they charge you for delivering energy to your home or business. TDUs are also known as Transmission and Distribution Service Providers (TDSP).
  • The REP bills you the energy charge, while the TDU bills you the delivery charge, also known as passthrough charge.

The energy charge is determined by the electricity plan you choose, which means you have some control over the amount billed. On the other hand, the delivery charge depends on the TDU service territory where you are located. There are five TDUs in Texas, each with an assigned territory: Oncor Electric Delivery, AEP Texas Central, AEP Texas North, CenterPoint Energy and Texas-New Mexico Power (TNMP).

The only way to change your TDU, is by moving to an address served by a different utility company. You can only choose your retail electric provider, and there may be multiple electricity plans available from the same REP.

Updated TDU Delivery Charges for All Service Territories

What is a delivery charge for electricity? TDU charges are composed of a fixed monthly charge and a variable charge per kilowatt-hour delivery.

  • These charges are updated twice per year in March and September, with approval from the Public Utility Commission of Texas (PUCT).
  • Retail electric providers are not allowed to charge a markup when billing delivery charges.
  • These rates must be applied exactly as approved by the PUCT.

Energy delivery charges are necessary to keep the grid in operation: components such as switchgear and transformers need regular maintenance, and grid capacity must be constantly increased to keep up with generation and consumption. The latest TDU charges were approved on September 1, 2022, and the following table compares them with the previous rates:

TDU Current Delivery Charge (Sept 2022) Previous Delivery Charge (March 2022) Percentage Change
Oncor $3.42 per month

4.4076 cents/kWh

$3.42 per month

3.8907 cents/kWh

AEP Texas Central $5.88 per month

5.1079 cents/kWh

$5.88 per month

4.5213 cents/kWh

AEP Texas North $5.88 per month

4.6985 cents/kWh

$5.88 per month

4.1058 cents/kWh

CenterPoint Energy $4.39 per month

4.9454 cents/kWh

$4.39 per month

$3.8000 cents/kWh

TNMP $7.85 per month

5.4741 cents/kWh

$7.85 per month

4.7274 cents/kWh


As you can see, all TDUs increased their electricity delivery charges in September 2022. Keep in mind that the new delivery charges also apply for fixed-rate electricity plans:

  • Your electricity provider has no control over TDU charges. Your retail provider bills them along with energy charges, and pays them to the local utility company.
  • If you currently have a fixed-rate electricity plan, the energy charge is kept constant for the entire contract term,  but the TDU charge is updated in March and September.

To compensate for rising TDU charges, you can switch to an electricity plan with lower energy charges. Energy efficiency measures and solar panels can also help you reduce your monthly electricity bills. Under the Inflation Reduction Act (IRA), both energy upgrades and solar panel systems qualify for a 30% federal tax credit.

How Are Power Bills Split Between Energy Providers and TDUs?

When you compare energy plans, the Electricity Facts Label (EFL) displays the average kWh price paid at three consumption levels: 500 kWh, 1000 kWh and 2000 kWh. These amounts include the TDU delivery charge, as you can see in the following example:

EFL: Payless Power Premier 12  Plan (Oncor Service Territory)

The EFL shows the following kWh prices at the consumption levels mentioned above:

Consumption Level 500 kWh 1,000 kWh 2,000 kWh
Average kWh Price 22.7 cents 21.8 cents 21.6 cents

The EFL provides the following cost breakdown:

  • Daily Charge: $3.67 per day, covering the first 17 kWh of daily consumption
  • Energy Charge: 21.3327 cents/kWh (for consumption above 17 kWh/day)
  • Oncor TDU Delivery Charge: 4.4076 cents/kWh
  • Oncor TDU Monthly Charge: $3.42

In this case, Payless Power includes the TDU delivery charge as part of their fixed daily charge and energy charge:

  • The daily charge is multiplied by the billing period duration in days.
  • The energy charge is multiplied by the measured consumption above 17 kWh/day.

Consider that you may find different billing procedures in other EFLs. 

The following table calculates the total power bill and average kWh price at the three consumption levels specified by the EFL, assuming a 30-day billing period:

Consumption Level 500 kWh 1000 kWh 2000 kWh
Fixed Daily Charges $3.67 x 30 days = $110.10 $3.67 x 30 days = $110.10 $3.67 x 30 days = $110.10
Energy usage above 17kWh / day

(510 kWh / month)

0 kWh

(21.3327 cents/kWh)

490 kWh

(21.3327 cents/kWh)

1490 kWh

(21.3327 cents/kWh)

Energy Charges $0 $104.53 $317.86
Fixed TDU Charge $3.42/month $3.42/month $3.42/month
Total Charge $113.52 $218.05 $431.38
Avg. kWh Price 22.7 cents 21.8 cents 21.6 cents

If you want to know how the bill is split between the REP and TDU, you can calculate the TDU charges individually and subtract them from the total amounts billed.

Consumption Level 500 kWh 1000 kWh 2000 kWh
TDU Delivery Charge

(4.4076 cents/kWh)

$22.04 $44.08 $88.15
TDU Fixed Charge $3.42 $3.42 $3.42
TDU Total Charge $25.46 $47.50 $91.57
REP Total Charge $113.52 – $25.46 = $88.06 $218.05 – $47.50 = $170.55 $431.38 – $91.57 = $339.81
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