How to Read a Texas Commercial Electricity Bill — And Find What You're Overpaying For

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Every month, a business owner gets their electricity bill, sees the total at the top, and pays it. The line items below that total — charges labeled "TDSP Delivery," "Fuel Cost Adjustment," "Ancillary Services," "TDSP Base Charge" — get skimmed or ignored entirely. They look like accounting noise: fixed, opaque, and not worth the time it would take to decode them. Most commercial accounts in Texas have been operating this way for years. That's the problem this article solves.

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A Texas commercial electricity bill is built from two fundamentally different parts: the supply side and the delivery side. The supply side covers the actual electricity commodity — the power your business consumes — and it is negotiable. The delivery side covers the physical infrastructure that moves electricity from the grid to your building, and it is regulated by the Texas Public Utility Commission with rates that apply uniformly to every customer in a given territory. Every single charge on your bill belongs to one of these two buckets. Most businesses don't know this split exists. Understanding it is the entire foundation of lowering what you pay — because the levers you have access to only apply to one side.

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After reading this article, you will know exactly what every standard line item on a Texas commercial electricity bill means, where each charge comes from, and whether it's fixed or negotiable. You'll also have three specific calculations you can run on your current bill today to determine whether your effective rate is competitive, whether demand charges are consuming a disproportionate share of your cost, and whether your contract status is quietly costing you money right now.

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The Two Parts of Every Texas Commercial Electricity Bill

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In Texas's deregulated electricity market, your bill reflects charges from two entirely separate entities. Your Retail Electricity Provider — the company you signed a contract with, whether that's TXU, Constellation, Reliant, Direct Energy, NRG, or one of more than 100 other licensed providers — supplies the electricity you consume. Your Transmission and Distribution Utility, also called a TDU or TDSP, owns and operates the physical poles, wires, transformers, and meters that deliver that electricity to your building. These are different companies with different regulatory authorities and entirely different billing structures.

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Your TDU is determined by your address and cannot be changed. In the Dallas-Fort Worth metro area and most of North and West Texas, it's Oncor Electric Delivery — the state's largest TDU, serving roughly 10 million customers under tariff schedules set by the Texas Public Utility Commission. In the Houston metro area and surrounding counties, it's CenterPoint Energy. In West Texas and parts of Central and South Texas, it's AEP Texas. These utilities don't sell you electricity — they deliver it. Their charges are set through PUC rate proceedings and apply identically to every customer in their service territory, regardless of which REP that customer has chosen.

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Your REP, by contrast, is your choice. That's where the competitive market operates — and where an energy broker or Texas Public Utility Commission resources come in. A broker runs a competitive bid process to find the lowest available supply rate from a licensed REP. No broker, no contract negotiation, and no REP sales process changes what your TDU charges. Those rates are fixed by tariff.

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The practical implication is this: any meaningful strategy to lower your electricity cost must begin by separating these two sides. A rate comparison that looks only at the total bill — treating it as one undifferentiated number — misses the point. The delivery side is fixed. The supply side is where the savings live. Attacking the total without knowing which portion is which is exactly why most commercial cost-reduction efforts produce disappointing results or collapse under scrutiny.

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How to Read a Texas Commercial Electricity Bill: Every Line Item Explained

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A standard Texas commercial electricity bill contains six to nine distinct line items, depending on your TDU territory, account service class, and contract structure. Here is what each one is, where it comes from, and whether it falls on the negotiable supply side or the regulated fixed side.

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What Is a Demand Charge — and Why Can One Bad 15 Minutes Cost You All Month?

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The TDSP demand charge is the most counterintuitive line item on a Texas commercial electricity bill, and it is disproportionately responsible for the gap between what businesses expect to pay and what they actually owe. The demand charge on an electricity bill in Texas is not based on how much total energy you consumed — it is based on how fast you drew power at your single worst moment of the month.

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Here is how it works. Your TDU's interval meter records your total electrical draw in kilowatts every 15 minutes throughout the billing period. At the end of the month, the single highest 15-minute reading becomes your billing demand. The TDU multiplies that one number by their per-kW tariff rate. That product is your demand charge for the entire month.

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Consider a restaurant with a commercial kitchen. On a Friday lunch service, the line cook fires up the convection ovens, the exhaust hood fans run at full speed, the commercial dishwasher runs a cycle, and the HVAC ramps up simultaneously at 11:45 a.m. For those 15 minutes, the restaurant's total electrical draw hits 52 kW. That single window — one out of roughly 2,900 fifteen-minute intervals in a billing month — sets the demand charge for the entire period. At Oncor's commercial demand rate of $14 per kW, that 52 kW peak produces a demand charge of $728. A restaurant running identical total monthly kWh consumption but with a peak draw of only 35 kW would pay $490 in demand charges. Same energy usage. $238 difference — because of what happened in one 15-minute window during one lunch rush.

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This is why two businesses with identical monthly kWh totals can receive bills that differ by hundreds of dollars. Demand charges don't measure consumption volume — they measure consumption rate at your single most intense moment. For a deeper look at how these charges are calculated and what high-load businesses can do about them, see the detailed guide on ERCOT manufacturing demand charges. Texas manufacturing and industrial facilities face this challenge acutely, but the mechanics apply to any commercial account large enough to carry a demand charge line item.

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The Three Numbers That Tell You Whether You're Overpaying

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These are not general tips. They are a specific diagnostic protocol — three calculations anyone who wants to know how to read a Texas commercial electricity bill can run on their current statement in about ten minutes to determine exactly where you stand relative to the market.

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Number 1: Effective rate per kWh. Divide your total bill amount by your total kWh consumed that month. The result is your effective all-in rate. This number almost always exceeds the rate your REP advertised in your contract, because the REP's rate covers only the energy supply portion of the bill. The advertised rate is real — it accurately reflects what your REP charges for the commodity. But it does not include TDSP delivery, TDSP base charge, TDSP demand, ancillary services, fuel adjustments, or taxes. Your effective rate includes all of it. The U.S. Energy Information Administration reports Texas commercial electricity supply averages around 8.6¢/kWh at the wholesale-to-commercial supply level — but when all-in charges are included, most Texas commercial accounts run effective rates of 10.5–13.5¢/kWh depending on load profile and TDU territory. A Texas electricity bill breakdown that uses only the REP's advertised rate as a benchmark will consistently mislead you about your actual cost position. See current Texas EIA commercial electricity rate data for reference.

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Number 2: Demand charge as a percentage of total bill. Divide your total TDSP demand charges by your total bill amount and multiply by 100. If demand charges exceed 30% of your total bill, it may be worth evaluating whether your current supply contract is optimized for your usage profile. Certain commercial REP contracts are structured to reduce effective demand charge exposure for specific account types — this is a negotiable element of the supply agreement, not a fixed TDU tariff. The 30% threshold is a diagnostic starting point. A demand charge percentage of 40% or higher on a consistent basis is a signal that plan restructuring — through a competitive bid process — is likely to produce material savings on top of any rate improvement.

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Number 3: Contract expiration date. Find the contract end date on your bill or call your REP's commercial accounts line and ask directly. When a Texas commercial electricity contract expires without a new agreement in place, most contracts roll to a month-to-month holdover rate or an auto-renewal rate. These rollover rates typically run 20–40% above the original fixed contract rate — sometimes more during periods of tight ERCOT market conditions. A business whose $2,200-per-month contracted rate expired six months ago and rolled to a rate 30% higher has spent approximately $3,960 in avoidable overcharges since expiration. The contract expiration date is not a scheduling nuisance. It is the single most financially consequential piece of information on your commercial electricity account. Use current Texas commercial energy rates as your benchmark for what a renegotiated contract should deliver.

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What to Do When Your Texas Electricity Bill Is Higher Than Expected

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Start by confirming your contract status. Look for a "contract end date" on your most recent bill — most Texas REPs are required to include this — or call your REP's commercial accounts line and ask for the end date and current rate type. If your contract ended within the last 90 days and you didn't execute a new agreement, you are almost certainly on a rollover or variable holdover rate. This is the single most common cause of unexplained bill increases for commercial accounts in Texas, and it is correctable immediately once identified.

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Next, isolate demand charge movement. Pull your bills for the prior three months and compare the TDSP demand charge line on each. A significant jump — more than 15–20% above prior months — almost always traces to a specific operational event: a piece of equipment turned on at an unusual time, a new appliance brought online without adjusting the startup sequence, a change in staffing or shift scheduling, or equipment cycling that created an accidental simultaneous peak. Identifying the cause is essential, because a demand spike that isn't understood tends to repeat — and in some TDU territories, ratchet clauses mean a single bad month can shadow your demand billing for up to 11 additional months.

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Then calculate your effective rate. Total bill divided by total kWh consumed. Compare the result to the current Texas commercial electricity market average for your TDU territory. If your effective rate exceeds the market average by more than 15%, you are a candidate for immediate rate shopping. A commercial electricity bill explained as "just what electricity costs here" is often the result of an expired contract, a poor initial rate, or a variable-rate product that has drifted well above the competitive market. At 120,000 kWh annually, a 2.5¢/kWh gap between your effective rate and the competitive market represents $3,000 per year in unnecessary cost.

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Finally, put your account into a competitive bid process — but do not call your current REP first. Your current provider has no commercial incentive to offer you a better rate while you remain on their contract or holdover. The correct move is to run a competitive reverse auction that invites 25 or more licensed Texas REPs to bid simultaneously against each other for your contract. Knowing your effective rate, your demand charge percentage, and your contract history going in is what allows you to evaluate those bids accurately.

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What a Broker Can — and Can't — Lower on Your Bill

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A broker operates exclusively on the supply side of your bill. That is a significant lever — but it is not the whole bill, and understanding the boundary matters as much as understanding what's possible within it.

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A broker can lower your energy supply charge — the per-kWh rate your REP charges for the commodity — by running a competitive process that forces licensed providers to compete for your contract in real time. A broker can influence the fuel cost structure of your agreement, specifically whether your contract locks in a fixed fuel component or exposes you to wholesale market fuel pass-throughs. A broker can negotiate certain ancillary service structures depending on what contract types are available in your market and what your REP will offer. And for accounts with specific load profiles, a broker can identify REP contract structures that carry lower effective demand charge exposure — some commercial supply plans are designed to reduce the demand-related portions of the supply contract for accounts whose usage patterns benefit from that structure.

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A broker cannot change your TDU's delivery charges. Oncor's distribution rate is a PUC tariff. CenterPoint's base charge is set through a rate proceeding that applies uniformly to every account in their territory. AEP Texas's per-kWh delivery charge is the same whether your business is served by a Fortune 500 REP or a regional startup. No broker, no REP, and no negotiation changes these numbers — full stop. The same applies to state and local taxes and your physical meter service class.

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Any broker or REP sales representative who tells you they can lower your Oncor delivery charge, reduce your TDSP base fee, or give you a better TDU rate through a provider switch is either misinformed about how Texas electricity regulation works or is misrepresenting what their service does. This is one of the most persistent sources of confusion in commercial electricity procurement — the regulated delivery side of your bill is fixed, and it cannot be negotiated. The supply side is not fixed, and that is where the savings live. For Texas churches and houses of worship, supply-side savings through competitive procurement routinely reach 15–30% of the total bill even with delivery charges unchanged. The same applies to Texas restaurants and bars, where supply procurement savings can offset a significant portion of the high-demand-intensity utility costs that come with commercial kitchen operations.

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If you've run the three calculations above — effective rate per kWh, demand charge as a percentage of total spend, and contract expiration date — you now have a clear picture of where your account stands relative to the Texas commercial electricity market. If your effective rate is running above 11–12¢/kWh all-in, or if your contract expired in the last six months and you haven't shopped it, a better rate is almost certainly available for your account right now.

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The reverse auction process works as follows: you submit your account details — your most recent bill, your contract end date, and your address — once. EnergyBrokerTX then runs a competitive bid process with 25 or more licensed Texas REPs, who bid against each other in real time for your contract. You receive every offer side by side, with full transparency on rates, contract length, fuel structures, and terms. You choose the one that fits your account, or you decline entirely. There are no provider sales calls, no obligation to switch, and no direct cost to your business — EnergyBrokerTX is compensated by the winning provider, not by you.

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Contact EnergyBrokerTX to start with a free bill review and rate comparison. Most Texas commercial accounts receive competing quotes within 24 hours. If your current rate turns out to be competitive, you'll know that — and that's worth knowing too.