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TexasElectric utilityUpdated Oct 2026

TNMP: why your delivery charges are the highest in Texas

Texas-New Mexico Power owns the poles and wires in parts of Texas. It charges more to deliver power than any big Texas utility. Here’s what you pay, why, and how to cut your bill anyway.

Published 8 min readBy The Day Company Editorial Team · How we verify figures
888-866-7456TNMP outages, option 1
$85.27Delivery at 1,000 kWh
Short answer

TNMP charges the most to deliver power of any big Texas utility. As of September 2026, its delivery charge is $7.56 a month plus 7.771¢ per kWh. On a 1,000 kWh bill, that’s $85.27 just for delivery, about $12.50 more than Oncor and $15 more than CenterPoint. You can’t shop that part away. But you can shop your energy rate, because TNMP homes get to pick their provider.

The 5 things to know

  • TNMP is your wires company, not your provider. It fixes outages and reads your meter.
  • Its delivery charge is the highest of the big Texas utilities.
  • You can pick your provider. Shop the energy rate, since delivery is the same for everyone.
  • Outages go to TNMP at 888-866-7456, option 1.
  • Blackstone is buying TNMP’s parent. Texas approved it with $45 million in rate credits.

Built on public data from the Public Utility Commission of Texas, TNMP, TXNM Energy’s SEC filings and provider fact labels. Checked October 2026.

01 · Delivery charges

Why are TNMP delivery charges so high?

Every Texas bill has two parts. Your provider sells you energy. Your wires company delivers it. No big Texas utility charges more for delivery than TNMP. It serves small towns far apart, so fewer homes split its costs.

Delivery charges on a 1,000 kWh bill, September and October 2026
TNMP
$85.27
Oncor
$72.73
CenterPoint
$70.23
AEP Texas Central
$60.14

This is just the delivery part, not the energy part. Figures come from provider fact labels and Oncor’s tariff. Bars start at zero.

TNMP delivery cost vs. other Texas utilities by monthly use
Monthly useTNMPOncorCenterPoint
500 kWh$46.41$38.40$37.57
1,000 kWh$85.27$72.73$70.23
2,000 kWh$162.98$141.41$135.57
What that adds up to: at 1,000 kWh a month, TNMP delivery costs about $150 a year more than Oncor and $180 more than CenterPoint. Delivery charges change twice a year, usually in March and September.
Why other sites show different numbers: TNMP’s delivery charge changed in early September 2026 and again on September 13. Some sites still show the older rate. This page uses the newest one.
02 · Delivery calculator

How much does TNMP delivery cost me?

TNMP’s delivery charge is the highest of the big Texas utilities. See what it adds to your bill, and how it compares with Oncor.

Estimate your monthly bill
Estimated bill$
TNMP delivery$
All-in price¢
More than Oncor$
Uses TNMP’s delivery charge of $7.56 a month plus 7.771¢ per kWh, set September 13, 2026, and Oncor’s $4.06 plus 6.8673¢ for the comparison. Find your energy charge and base charge on your plan’s Electricity Facts Label. Taxes and city fees are not included.
03 · What to do

What do you need help with?

TNMP handles the wires. Your provider handles the bill. Tap what you need.

What do you need?
Call TNMP, not your provider

Call 888-866-7456 and pick option 1, or use TNMP’s online outage map. Call 911 first if a line is down or someone is in danger.

Outage steps
04 · Outages

How do I report a TNMP power outage?

Call TNMP, not your provider. TNMP owns the lines, so it’s the one that sends crews.

  1. Call 888-866-7456Pick option 1 to report an outage. The same number gives repair updates.
  2. Check the outage mapSee if your outage is known at outagemap.tnmp.com.
  3. Get alertsSign up for TNMP outage texts and emails before storm season.
Line down or sparks? Call 911 first, then TNMP. Stay far away from any downed line.

TNMP serves more than 125,000 homes and businesses on the Gulf Coast, in parts of Brazoria and Galveston counties. Big storms there can mean long outages. See our Texas power outage guide for what to do while you wait.

05 · Pick a provider

Can I choose my electricity provider in TNMP areas?

Yes. TNMP is part of Texas’s open market. You pick a retail provider, and TNMP still delivers the power.

Who does what on a TNMP bill
Your providerSells you energy and sends the billYou pick this
TNMPDelivers power, reads the meter
OutagesGo straight to TNMP
The PUCTApproves TNMP’s charges
Your ESI ID starts with 1040051. That code on your bill tells providers your home is on TNMP’s lines. It helps you sign up for a new plan.

Not sure who serves you? Use our utility finder. Ready to shop? Read how to use Power to Choose first.

06 · The Blackstone deal

Who owns TNMP, and what does the Blackstone deal mean for me?

TXNM Energy owns TNMP. It also owns a big utility in New Mexico. In 2025, the firm Blackstone agreed to buy TXNM. Texas said yes in 2026, with credits for customers.

  1. Blackstone Infrastructure agrees to buy TXNM Energy for $61.25 a share.
  2. TXNM shareholders approve the deal.
  3. Texas okays the deal. It includes $45 million in rate credits for TNMP customers.
  4. TXNM expects the deal to close.
The $45 million in rate credits came from a deal with the state’s consumer watchdog, the cities TNMP serves and others. It also promised local control and money for TNMP’s five-year plan.
07 · Rate case

Is TNMP raising its rates?

TNMP asked to update its base rates in 2026. The request includes $20.5 million in Hurricane Beryl repair costs, spread over five years.

How delivery charges change: TNMP updates parts of its charge twice a year for new poles and wires. A full rate case resets the base. The state must approve every change, and your provider pases it through.

To see how delivery charges show up on your bill, read why your electric bill is so high.

08 · Cut your bill

How can I lower my bill with TNMP?

You can’t shrink TNMP’s delivery charge. But you control two things: your energy rate and how much power you use.

  1. Shop the energy rateDelivery is the same for every provider here. So a lower energy rate is pure savings.
  2. Price your real useCheck plans at your actual monthly kWh, not just 1,000. Use our plan calculator.
  3. Use less at peakSeal ducts and use a smart thermostat. Each kWh you save also cuts delivery.

Each kWh you save cuts about 7.8¢ of TNMP delivery on top of the energy cost. Try our plan calculator. See Texas power prices. Want solar? Check buyback plans first.

09 · Quick answers

TNMP questions, answered

What is TNMP?

TNMP is short for Texas-New Mexico Power. It’s a wires company in Texas’s open market. It owns the poles and lines, reads your meter and fixes outages in its areas. It doesn’t sell you electricity. A retail provider you choose does that, and it adds TNMP’s delivery charge to your bill.

How much does TNMP charge for delivery?

As of September 2026, TNMP’s delivery charge is $7.56 a month plus 7.771 cents per kWh. On a 1,000 kWh bill, that comes to $85.27 just for delivery. It’s the highest of the big Texas utilities. The charge changes about twice a year with state approval.

Why is TNMP so expensive?

TNMP serves smaller towns spread across Texas, from the Gulf Coast to West Texas. It has long lines and fewer homes to split the cost of poles, wires and repairs. Oncor and CenterPoint split their costs across millions of homes. So their delivery charges are lower.

How do I report a TNMP power outage?

Call TNMP at 888-866-7456 and pick option 1, or report it on TNMP’s outage map online. Don’t call your provider for outages, because TNMP owns the lines and sends the crews. If a line is down or someone is in danger, call 911 first.

Can I choose my electricity provider if I have TNMP?

Yes. TNMP areas are part of Texas’s open market, so you can pick any provider that serves your area. TNMP still delivers the power and fixes outages. Every provider adds the same TNMP fee. So compare the energy part of each plan.

What does an ESI ID starting with 1040051 mean?

An ESI ID is your electric service number. If yours starts with 1040051, your home is on TNMP’s lines. Providers use it to sign you up and switch your service. You can find it on your bill or ask your current provider for it.

Who owns TNMP?

TNMP is owned by TXNM Energy, which also owns PNM in New Mexico. In 2025, Blackstone Infrastructure agreed to buy TXNM Energy for $61.25 a share. Texas okayed the deal in February 2026. TXNM expected it to close in the second half of 2026.

What are the TNMP rate credits from the Blackstone deal?

As part of the Texas approval, TNMP customers get $45 million in rate credits. The settlement included the state’s consumer watchdog, the cities TNMP serves and others. It also promised local control and money for TNMP’s five-year plan. Regulators approved it on February 6, 2026.

Is TNMP raising rates in 2026?

TNMP asked to update its base rates in 2026. Its request includes $20.5 million in Hurricane Beryl repair costs, spread over five years. The state’s utility commission must approve any change. Delivery charges also shift about twice a year for grid costs.

What areas does TNMP serve?

TNMP serves about 249,000 homes and businesses in pockets of Texas. That includes more than 125,000 on the Gulf Coast, in parts of Brazoria and Galveston counties, such as Texas City. Use our utility finder to check your address if you aren’t sure.

How can I lower my electric bill in a TNMP area?

Shop your energy rate. Every provider adds the same TNMP fee. Price plans at your real monthly use, not just 1,000 kWh. Then cut your use: each kWh saved also saves about 7.8 cents in TNMP delivery charges. Small changes add up over a year.

Does TNMP buy back solar power?

No. In TNMP areas, your provider decides what it pays for extra solar power. That’s called a buyback plan. Ask for the buyback rate in writing. TNMP connects your system to the grid. Compare buyback plans before you buy panels, because credits vary widely by provider.

What is my ESI ID, and where do I find it?

Your ESI ID is a long number that identifies your home’s meter. It’s printed on your electric bill. You need it to switch plans or report some problems. You can also see your home’s usage online at Smart Meter Texas, using your ESI ID.

How much does TNMP delivery add to my bill?

At 1,000 kWh a month, TNMP’s delivery charge is about $85.27. That’s $7.56 a month plus 7.771¢ per kWh, the rate set on September 13, 2026. Use our calculator above to see your own number and compare it with Oncor.

Up nextHow to use Power to Choose without getting burnedDelivery is the same for everyone in TNMP areas. Here’s how to shop the part you control. Read the guide
Sources

Sources and updates

Sources (9)
Changelog · last updated October 6, 2026 · 1 update
  • October 6, 2026: Guide published with TNMP’s September 2026 delivery charges, outage steps, the Blackstone deal and the 2026 rate case.

How to cite this page: The Day Company, “TNMP: why your delivery charges are the highest in Texas”, updated October 6, 2026, https://theday.company/tx/tnmp.

Delivery charges change about twice a year. We show the charges in effect on the dates listed in our sources. Your provider’s energy charge is separate. The Day Company is not tied to TNMP or any provider, and no company pays us.