What Texas New Mexico Power Actually Is
Texas New Mexico Power is a transmission and distribution utility (TDU) operating under the jurisdiction of the Public Utility Commission of Texas (PUCT). It is not a retail electricity provider. TNMP does not sell you electricity, does not set your energy rate, and does not compete for your business. What it does do is own and maintain the physical wires, transformers, and meters that connect your home or business to the grid.
TNMP serves roughly 245,000 customers across two geographically distinct service territories in Texas. The larger footprint covers portions of the Gulf Coast, the Panhandle, and areas around Odessa-Midland. A smaller footprint sits in the Rio Grande Valley near El Paso. If your service address falls inside these zones, every retail electricity plan you choose will carry TNMP delivery charges on top of whatever energy rate your chosen provider quotes.
The four TDUs operating in deregulated Texas are Oncor, CenterPoint Energy, AEP Texas, and TNMP. Each has its own PUCT-approved tariff, its own rate structure, and its own infrastructure investment profile. Comparing plans across TDU territories requires adjusting for the delivery-charge differences, a step most price-comparison tools skip.
How TNMP Delivery Charges Are Structured
TNMP delivery charges consist of two components: a fixed monthly customer charge and a variable volumetric charge expressed in cents per kilowatt-hour (kWh). Both are set by PUCT order through a formal ratemaking proceeding, not by your retail provider.
As of the most recently published TNMP tariff schedules (PUCT filings, 2024), residential customers in TNMP territory pay:
- Customer charge: approximately $5.49 per month, flat regardless of usage
- Transmission and distribution charge: approximately 3.8 cents per kWh (this rate blends transmission, distribution, and various rider adjustments)
Note: PUCT publishes tariff updates on an irregular schedule tied to rate cases and interim adjustments. LightCompanies pulls the most recent posted schedule, but readers should verify against the PUCT interchange database before signing a long-term plan.
At a usage level of 1,000 kWh per month, the delivery charge math works out as follows:
- Fixed customer charge: $5.49
- Variable charge: 1,000 kWh x $0.038 = $38.00
- Total estimated delivery charge: $43.49
That $43.49 appears on your bill whether your retail provider labels it a pass-through, a distribution fee, or buries it inside an “all-in” rate. The charge is real either way.
TNMP Delivery Charges vs. Other Texas TDUs
Benchmarking TNMP against the other three TDUs at the same 1,000 kWh usage tier gives a clearer picture of what territory you are paying to live in.
Approximate residential delivery charges at 1,000 kWh/month (2024 tariff schedules):
| TDU | Approx. Monthly Delivery Charge |
|---|---|
| Oncor | $39 to $43 |
| CenterPoint Energy | $41 to $46 |
| AEP Texas | $44 to $50 |
| TNMP | $41 to $47 |
These ranges reflect the fixed customer charge plus the variable kWh component, and they incorporate the primary distribution rider adjustments active in each territory. They do not include metering charges or advanced meter fees, which vary by TDU and are generally under $3 per month.
TNMP sits roughly in the middle of the Texas TDU range. It is not the lowest-cost delivery territory (Oncor historically occupies that position at moderate usage levels), and it is not the highest. AEP Texas customers in rural West Texas corridors typically face the steepest per-kWh delivery costs due to lower customer density per mile of infrastructure.
The practical implication: a retail provider quoting you 11.5 cents per kWh in TNMP territory is not directly comparable to the same provider quoting 11.5 cents in Oncor territory. The underlying energy supply component may be similar, but the all-in delivered cost per kWh will differ once delivery charges are layered in.
What Riders Do to the Published Rate
Tariff riders are the reason TNMP’s delivery charge does not stay static even between formal rate cases. Riders are PUCT-approved cost-recovery mechanisms that allow a TDU to collect funds for specific programs or capital expenditures outside of the main rate case cycle.
Active riders in TNMP’s tariff structure have included:
- Transmission Cost of Service (TCOS) rider: Recovers ERCOT-allocated transmission costs, updated semi-annually
- Advanced Metering System (AMS) rider: Recovers smart meter deployment and maintenance costs
- Distribution Investment Recovery (DIR) rider: Allows interim recovery of distribution capital between rate cases
Each rider adds fractional cents per kWh. Combined, they can shift the effective delivery rate by 0.3 to 0.7 cents per kWh over the course of a year. On a 1,000 kWh/month bill, that is $3 to $7 in additional monthly cost that neither your retail provider nor most plan comparison sites flag proactively.
PUCT only publishes quarterly snapshots of active rider levels. The numbers cited here reflect the latest available filing as of this writing. Readers comparing TNMP plans over a multi-year contract window should budget for incremental rider creep.
How Retail Providers Present (and Sometimes Obscure) Delivery Charges
Texas law requires retail electricity providers to publish a Electricity Facts Label (EFL) for every plan they sell. The EFL must disclose the average price per kWh at three usage levels: 500 kWh, 1,000 kWh, and 2,000 kWh per month. That price is supposed to be an all-in figure that includes both the energy supply component and the pass-through delivery charge.
In practice, several patterns create confusion for TNMP-territory shoppers:
Bundled vs. pass-through billing. Some providers bill delivery charges as a single line item pass-through that matches TNMP’s tariff exactly. Others fold delivery into their rate and present a single per-kWh figure. Neither approach is inherently deceptive, but they make side-by-side plan comparisons harder.
Base charge stacking. A provider might charge its own base monthly fee in addition to TNMP’s $5.49 customer charge. A plan with a $9.95 provider base charge and a $5.49 TDU customer charge generates $15.44 in fixed monthly costs before a single kWh is consumed. This hits low-usage customers hardest.
Usage-cliff pricing. Some plans marketed in TNMP territory include bill credits that activate only above a threshold (commonly 1,000 or 2,000 kWh). The EFL at the 1,000 kWh tier will show a lower per-kWh price than a customer at 900 kWh will actually experience. This is legal under current PUCT rules, but it is a structural mismatch between advertised and realized cost.
Shopping on PowerToChoose.org (the PUCT-managed comparison site) within TNMP’s specific service territory filter is the most reliable way to generate a plan list with EFLs calibrated to TNMP’s delivery charges. Selecting the wrong territory filter, or using a third-party aggregator that defaults to Oncor territory, produces rates that do not apply to TNMP customers.
Rate Case History and What It Signals About Future Charges
TNMP’s most recent general rate case concluded in 2021. The settlement approved by the PUCT resulted in a modest reduction to the base distribution rate, offset in part by rider adjustments in subsequent periods.
Rate case filings are public record through the PUCT interchange system. The 2021 docket (PUCT Docket No. 51145) contains TNMP’s full rate base justification, the intervenor testimony, and the final order. Readers with an interest in the infrastructure investment trajectory behind future rate levels can access this material directly at interchange.puc.texas.gov.
TNMP has flagged grid hardening investments tied to storm recovery mandates following Winter Storm Uri (February 2021). Capital expenditures associated with weatherization requirements and transmission reliability upgrades are candidate items for future rider filings. This does not mean rates will increase on any specific timeline, but it is a factor relevant to anyone evaluating a two- or three-year fixed-rate plan in TNMP territory today.
Practical Steps for TNMP-Territory Shoppers
Understanding the delivery charge structure translates directly into a more disciplined shopping process. Four steps worth following:
Step 1: Confirm your TDU before comparing plans. Your current bill lists the TDU name and the delivery charge as a separate line item. If you are a new mover, the address lookup on PowerToChoose.org will identify your TDU. Do not assume your territory based on geography alone. TNMP’s service zones are not contiguous and are not always intuitive.
Step 2: Calculate your baseline delivery cost. Use the formula above: $5.49 + (your average monthly kWh x $0.038). This is the floor you pay regardless of which retail provider you choose. The competition among providers happens entirely in the energy supply component above that floor.
Step 3: Read the EFL at your actual usage tier. If your average bill is 750 kWh, the 500 kWh EFL understates your cost and the 1,000 kWh EFL may overstate or understate it depending on how the plan’s rate structure scales. Do the per-kWh math at your real usage, not at the advertised tier.
Step 4: Check for base charge stacking. Add the provider’s monthly base fee (if any) to TNMP’s $5.49 customer charge. Divide that fixed total by your average monthly kWh. That per-kWh equivalent is the hidden premium low-usage customers absorb. At 500 kWh/month, a $9.95 provider base charge adds approximately 2.0 cents per kWh to your effective rate before energy supply pricing is even considered.
The Bottom Line on TNMP Delivery Charges
TNMP’s delivery charge structure is mid-range by Texas standards. It is not a reason by itself to view the territory as disadvantaged, but it is also not negligible. At 1,000 kWh per month, delivery charges consume roughly 35 to 40 percent of a typical all-in bill total, depending on the energy supply rate. That proportion rises as energy supply rates compress with competition or fall with lower commodity costs.
The delivery charge is not negotiable, not optional, and not avoidable by switching providers. What is avoidable is buying a plan without accounting for it. Providers competing in TNMP territory are competing on the energy supply component only. LightCompanies profiles those providers in the main TNMP REP comparison pages, where delivery charges are held constant so the supply-side differences are visible on their own terms.
For readers evaluating whether their current TNMP-territory plan is priced competitively, the delivery charge baseline established here is the starting point. Strip it out of your current bill, identify what you are paying for energy supply alone, and compare that number against current offers at the same usage tier. That is the calculation that determines whether a switch is worth the contract-exit math.