Texas Electricity Bill Calculator
This Texas electricity bill calculator adds your plan's energy rate to your area's TDU delivery charge. Texas bills are made of two separate charges added together: what your retail electric provider charges for the energy itself, and a separate delivery fee set by your area's transmission and distribution utility (TDU). Enter both to see your real total, not just a single blended rate.
Typically 5.6–7.4¢/kWh depending on your TDU area, as of September 2026.
Estimated bill
Enter your usage and rates to see your estimate.
How this calculator works
Energy cost = kWh × your energy charge. Delivery cost = kWh × your TDU delivery rate. Add those two together with your fixed base fee (if your plan has one) for the total. This mirrors exactly how a Texas bill is actually structured — two per-kWh rates from two different companies, not one number.
Understanding the two charges
Texas is a deregulated electricity market. A generation company produces the power, a Transmission and Distribution Utility (TDU) owns the poles, wires, and meters that deliver it, and a Retail Electric Provider (REP) is the company you actually sign up with and pay. Your REP sets the energy charge based on the plan you chose, but the TDU delivery charge is fixed by your service area and regulated by the Public Utility Commission of Texas (PUCT) — your REP passes it through without markup.
The energy charge and TDU delivery rate you enter are multiplied by your kWh usage and added together, plus any fixed monthly base fee — the same math your retail electric provider uses, just broken into its two real components instead of one blended number. Background on how the TDU/REP structure works and current statewide rate context comes from Constellation Energy's TDU delivery charge explainer and EIA's electricity price data for Texas. This calculator does not pull live rates from any provider; enter the numbers from your own plan or a current rate comparison for your area. Last checked September 2026.
Frequently asked questions
Why does my Texas bill have two separate electricity charges?
Texas's deregulated market splits electricity into three roles: a generation company that produces the power, a Transmission and Distribution Utility (TDU) that delivers it through poles and wires, and a Retail Electric Provider (REP) that sells you the plan. Your bill's energy charge covers what you're paying your REP for the electricity itself; the TDU delivery charge covers using the physical grid to get it to your house, and by Texas Public Utility Commission (PUCT) rule, your REP has to pass that delivery charge through to you without any markup.
What is a typical TDU delivery charge in Texas?
TDU delivery rates vary by utility service area and are set by the PUCT, running roughly 5.6 to 7.4 cents per kWh as of September 2026, according to rate documentation from Constellation Energy. Your specific rate depends on which TDU serves your address (Oncor, CenterPoint, AEP, and others each set their own).
How does my Texas rate compare to the state average?
The statewide residential average in Texas was about 16.44 cents per kWh as of May 2026, according to EIA data, though your actual combined rate (energy charge plus delivery) depends entirely on your specific plan and TDU area. Use the calculator above with your own plan's numbers for an accurate comparison.
Can my retail electric provider mark up the TDU delivery charge?
No. Constellation's TDU explainer states plainly that a REP is "legally required to add the TDU charge to your bill without mark-up." The delivery portion of your bill should match the TDU's published rate for your area regardless of which REP you're signed up with.
Related tools
- General Electricity Bill Calculator (any state)
- kWh Cost Calculator
- Appliance Database
- What Does Electricity Cost? — national rate context to compare against.
This calculator provides estimates based on the rates you enter. TDU delivery rates vary by service area and change periodically; confirm your current rate with your TDU or REP. This tool is not affiliated with any Texas utility, TDU, or retail electric provider.