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Texas · TDU · ERCOT

Texas-New Mexico Power commercial electricity

TNMP territory is fragmented. Adjacent addresses can sit in different delivery territories, so confirm the ESI ID rather than assuming from the city.

  • Supply choiceAvailable to eligible accounts
  • Account keyed onESI ID
  • GridERCOT
  • Tariff read on2026-10-30

Texas-New Mexico Power is the TDU serving Non-contiguous pockets across Texas, including parts of the Gulf Coast, west Texas and north Texas. It delivers power, owns the meter and restores outages under regulated tariffs. Eligible commercial accounts contract the supply portion separately. Accounts are keyed on ESI ID.

Source: Public Utility Commission of Texas market structure · 2026-10-31

Competitive supply market. Delivery, demand and fixed charges on a Texas-New Mexico Power account remain regulated regardless of which supplier you choose.

What the U.S. government data says about Texas-New Mexico Power

EIA’s 2025 utility sales table has no commercial sales rows for Texas-New Mexico Power. So there is no utility-level figure to show here. The Texas figures, from the same source, are on the Texas page.

What Texas-New Mexico Power controls and what it does not

Responsibility split on a Texas-New Mexico Power commercial account
ElementWho sets itCan a supplier change it?
Delivery and distribution chargesTexas-New Mexico Power, under regulated tariffNo
Demand chargesTexas-New Mexico Power, under regulated tariffNo
Fixed monthly service chargeTexas-New Mexico Power, under regulated tariffNo
Riders and surchargesRegulated, by approved filingNo
Metering and outage responseTexas-New Mexico PowerNo
Supply / generationCompetitive supplier, or default serviceYes — this is the contestable portion

Cities and areas in this territory

Territory boundaries do not follow city limits. Two addresses on the same street can sit in different territories, which is why we confirm the ESI ID rather than inferring eligibility from the city or the ZIP code. Inferring from location is the most common way a commercial account is told it can do something it cannot.

League City · Texas City · Lewisville · Alvin · Pecos

Which lever moves which charge

This is the question a utility page exists to answer. If you change something at the meter, which line on the bill actually moves — and which one does not move no matter what you do?

Which lever moves which charge Schematic · delivery components for Texas-New Mexico Power
Fixed customer chargeNothing you do
A flat monthly amount for being connected. It does not move with consumption or with peak.
No lever
Volumetric distributionHow much you use
Charged per kilowatt-hour. This is the line that efficiency work moves.
Use less
Demand chargeHow hard you draw
Charged per kilowatt of billed demand. Set by your highest interval, not by your total — which is why cutting consumption may not move it at all.
Lower the peak
Riders and surchargesRegulatory filings
Adjusted periodically through approved filings. They step rather than scale, and nothing you do at the meter changes them.
No lever

Schematic shapes, not Texas-New Mexico Power's actual rates — those come from the filed tariff. The point is the behaviour: two of these four respond to something you control, and a supplier changes none of them.

What sits inside the delivery charge from Texas-New Mexico Power

Delivery is not one number. On a commercial account it is typically assembled from several components, each set by the filed tariff and each behaving differently as your usage changes:

  • A fixed customer or meter charge, which does not move with consumption at all.
  • A volumetric distribution charge per kWh, which scales with how much you use.
  • A demand charge per kW where the account is demand-metered, which scales with how hard you draw rather than how much you use — and which is where a low load factor account gets hurt.
  • Riders and surcharges, adjusted periodically through regulatory filings, covering items such as transmission cost recovery, energy efficiency programs and storm or system restoration costs.

None of these changes when you change supplier. Understanding the mix matters because it determines which action actually moves your bill: reducing consumption attacks the volumetric component, reducing peak draw attacks the demand component, and neither one touches the fixed charge.

The other territories in Texas

Boundaries do not follow city limits. If you are not certain which of these serves your address, confirm the ESI ID printed on the bill rather than inferring it from the city.

What the Texas-New Mexico Power tariff says: Secondary Service (Greater Than 5 kW) (with Secondary Service (Less Than or Equal to 5 kW))

Read 2026-10-30 from TNMP Tariff for Retail Delivery Service, 6.1 Rate Schedules (Revision 14), Effective Date: September 13, 2026. Each figure is quoted from that document, and it is a schedule figure, not a bill estimate. See every tariff quoted on this site. The tariff and the schedule code on your bill control what applies to you.

Who the over-5 kW schedule covers
Secondary Service (Greater Than 5 kW) is for non-residential delivery at secondary voltage with Demand greater than 5 KW, to one point of delivery measured through one meter, single or three-phase at a standard secondary voltage. The smaller secondary schedule is for Demand of 5 kW or less, so TNMP's secondary split is at 5 kW.
Fixed monthly charges
Customer Charge $2.45 per ESI ID per month and Metering Charge $15.21 per ESI ID per month. The schedule's minimum bill includes the customer charge and metering charge per ESI ID per month.
Distribution System Charge
The Distribution System Charge depends on load factor: Load Factor <= 25% is $9.522580 per NCP kW, and Load Factor > 25% is $9.262411 per NCP Billing kW.
How billing kW is set
Billing kW for the Distribution System Charge is the higher of the current month's NCP kW or 80% of the highest monthly NCP kW in the 11 preceding months (80% ratchet). The ratchet does not apply to Retail Seasonal Agricultural or Municipal Pumping Customers, customers whose annual calculated load factor is 25% or less, or customers whose peak demand in the most current 12-month period is 20 kW or less.
Annual load factor and power factor
The annual load factor is calculated from the previous year's usage ending with the December bill cycle and applies for the following 12 billing months. For average lagging power factors of less than 95% the measured demand is increased by a formula the tariff gives.
Transmission line and billed separately
The schedule prints the Transmission System Charge as $0.00 per NCP kW and $0.00 per 4CP kW; Riders TCRF, CMC, DCRF, EECRF, HCRF, RCE and IS are See Rider lines, and the Transition and Nuclear Decommissioning Charges are Not Applicable. Premises that have established an NCP kW of at least 700 kW in any previous billing month, or were billed on 4CP kW before the tariff took effect, are billed on 4CP kW.
Up to 5 kW schedule
Secondary Service (Less Than or Equal to 5 kW) is for non-residential single-phase secondary voltage with Demand of 5 kW or less. Customer Charge $1.75 and Metering Charge $6.40, each per ESI ID per month; Transmission System Charge $0.00 per kWh; Distribution System Charge $0.002980 per kWh; the System Benefit Fund Charge is See Rider SBF.

This page lists Secondary Service (Greater Than 5 kW) (with Secondary Service (Less Than or Equal to 5 kW)) only. The Residential, Primary Service, Transmission Service and Lighting Service schedules, and the riders and their factors, are in the tariff but are not listed here. Your schedule code is printed on the bill, and it is the first thing to look up.

What to pull off a Texas-New Mexico Power bill before any conversation

  • ESI ID — the identifier that determines territory and eligibility
  • Rate schedule code as printed on the bill
  • 12 months of kWh, and peak kW if the account is demand-metered
  • The delivery and supply sections, kept separate
  • Current supplier and contract expiry, if any
Get a free bill check

Supplier comparison is not open in Texas yet. The free bill check shows how much of your bill a supplier could even touch and what is worth a look today, which is the same first step whichever way you go.