Your Texas Electric Bill Jumped: Switch Plans or Cut Usage First?

A higher Texas electric bill is a symptom, not a diagnosis. In competitive ERCOT areas, the same statement can hide more kilowatt-hours, a longer billing cycle, a regulated delivery-rate change, a contract that rolled to a month-to-month product, an estimated or corrected bill, or a plan whose advertised cents-per-kWh does not match how you actually use power. Switching first can lock in a new term—and an early-termination fee—before you know which of those happened. Cutting usage first can waste a month if the spike was a billing artifact or an expired fixed rate. The useful sequence is narrower: isolate usage from price, then decide whether a plan comparison is even warranted.

That sequence matches how the Public Utility Commission of Texas (PUCT) frames bill changes. On its consumer page for ¹, the Commission lists usage as the first driver of the amount due, then market factors, utility (delivery) rate changes, contract expiration, and a new retail plan. Power to Choose, the PUCT shopping site, tells households to ² before comparing offers, and notes that usage follows seasonal patterns, with higher consumption in months such as August and February. This article is a bill-spike diagnostic for households in Texas competitive areas: when to work the kWh first, and when shopping is the rational next step.

The bill is a diagnostic, not a verdict

In deregulated parts of Texas, two different companies sit behind one invoice. A retail electric provider (REP) sells the energy and sends the bill. A transmission and distribution utility (TDU)—the wires company—delivers power, reads the meter, and restores outages. Power to Choose’s ³ is explicit: local wires companies still read meters, respond to interruptions, and maintain poles and wires, regardless of which retailer you chose. ⁴ describes the same split: REPs market electricity and bill customers; TDSPs (also called TDUs) deliver and meter. Four TDSPs operate in the deregulated zones: Oncor, CenterPoint Energy Houston Electric, Texas-New Mexico Power, and AEP Texas.

That split is why “my bill went up” is incomplete. The energy charge can move because your REP’s rate changed or because you used more kWh at the same rate. Delivery charges can move because TDU tariffs changed or because volumetric delivery fees scale with kWh. Taxes and non-recurring items—late fees, reconnect charges, deposits—can move the total without saying anything about whether your plan is a poor fit. The PUCT’s ¹ is the map: energy charge (kWh consumed), TDU delivery charges (moving electricity over poles and wires), base charge (flat fee regardless of kWh), and recurring versus non-recurring charges.

If you live in a municipally owned utility or electric cooperative territory, the competitive-shopping half of this article does not apply in the same way. The PUCT states that it ¹ and that the itemized charge list on its bill page does not apply to muni and co-op customers. Power to Choose likewise notes that ³; municipalities and cooperatives were not required to deregulate. Confirm choice with a ZIP search before treating a high bill as a shopping problem.

ERCOT, the grid operator, ⁵—about 90 percent of the state’s electric load—and administers retail switching for about 8 million premises in competitive-choice areas. A switch changes who bills you for energy. It does not change the wires, the meter, or the TDU tariff that applies at the premise.

Separate kWh from dollars before you touch the thermostat or the contract

Pull the last 12 bills, or as many as you have, and write down four numbers for the spike month and for the same month last year: kWh used, number of days in the cycle, the energy (or “average price”) line in cents per kWh, and the total due. Power to Choose defines ⁶ and tells shoppers to use past bills and a calculator because seasonal patterns distort a single month. If kWh rose in proportion to the dollars, you have a usage event. If kWh is flat and the average price jumped, you have a rate, delivery, or plan-structure event. If both moved, you have a compound problem and should not treat either lever as sufficient.

Cycle length is the cheap trap. A 28-day bill next to a 34-day bill can look like a 20 percent cost increase with no change in how the house runs. Divide kWh by days to get a daily burn rate, then compare. Meter-read dates, kWh used, and whether the bill was estimated are the fields that make that comparison possible. Power to Choose notes that the PUC requires retailers to provide an ³ with specified components, even though each company designs its own layout.

That average-price line is the right object for plan comparison, not the headline “rate” in a sales email. Power to Choose instructs customers, before calling a new provider, to ask the current REP for the ⁷, excluding taxes and non-recurring fees, and to confirm whether the quoted rate includes electricity, transmission and distribution charges, and monthly customer charges. Many Texas plans do not cost the same at 500, 1,000, and 2,000 kWh because of base charges, usage credits, or minimum-usage fees. ⁸ shows plan prices at those three usage points for that reason: the same product can look cheap at one bucket and expensive at another.

If the kWh on the bill does not match how the house felt—empty, mild weather, similar thermostat—stop shopping and dispute the read. Estimated bills and corrections are real. The PUCT’s ⁹ states that a company may estimate bills if actual meter readings cannot be obtained or if the REP does not receive readings from the TDU, and that estimated meter readings generally cannot happen for more than three consecutive billing cycles. The same FAQ states that if there has been an error or you did not receive a bill, the company can re-bill up to 180 days from the original bill issuance date for charges from the time the error occurred; if the correction increases charges by more than $50, you may request a deferred payment plan; re-billing beyond 180 days is allowed in cases of meter tampering. A catch-up bill can look like a “rate hike” when it is unpaid or unbilled usage arriving in one statement.

Texas usage spikes are often cooling, not a secret new tariff

Nationally, air conditioning was the largest category of residential site electricity use in EIA’s 2020 Residential Energy Consumption Survey, at ¹⁰, ahead of space heating and water heating at 12 percent each. The same EIA explainer notes that the average U.S. household uses about 10,500 kWh of electricity per year, that use varies widely by region and housing type, and that single-family detached homes in the South consume the most, in part because they are more likely to have electric heating and use more air conditioning. About 89 percent of U.S. homes used air conditioning in 2020, versus 57 percent in 1980.

Texas is not a national-average climate. Power to Choose flags ² as high-usage months—cooling in late summer, heating (often electric heat strips or heat pumps) in winter. Oncor tells residential customers that when delivery charges “seem to be high,” it is ⁴, such as summer air conditioning or winter electric space heating. That sentence is doing two jobs: TDU fees have a large volumetric component, so more kWh raises delivery as well as energy; and the behavioral story in Texas is HVAC first, lighting last.

A usage-driven spike has a signature. kWh up, average price roughly stable, delivery line up in the same direction, and outdoor conditions that match (heat wave, guests, a failing AC that short-cycles, a second refrigerator, a pool pump left on, WFH equipment). The U.S. Department of Energy’s ¹¹ treats cooling load as a function of equipment efficiency, house shell, and thermostat behavior, not as a mystery. If that signature is present, a new 12-month fixed rate will not undo August. It may still be worth shopping later, but the first dollar of relief is in kWh.

A rate-driven spike has the opposite signature: similar kWh and similar weather, a higher average cents-per-kWh, a contract-expiration notice in the prior cycle, or a variable-rate plan during a wholesale-price month. Those cases belong in the shopping section below, not in a filter-change tutorial.

Delivery charges move with kWh and with PUCT-approved tariffs

Households often treat the “Oncor” or “CenterPoint” line as optional retailer markup. It is not. Inside ERCOT, the PUCT ¹² and does not set the final retail price charged by REPs. CenterPoint Energy, Oncor, TNMP, and AEP Texas are the investor-owned TDUs in the region. They charge REPs for delivery; REPs pass those charges through. Switching retailers does not switch your TDU.

Oncor’s residential delivery bill is a mix of ⁴: customer and metering charges on one side; distribution system charge, transmission cost recovery factor (TCRF), distribution cost recovery factor (DCRF), energy efficiency cost recovery factor (EECRF), and nuclear decommissioning charge on the other. Oncor’s ¹³ shows a customer charge of $1.43 and a metering charge of $2.80 per retail customer through the months listed, plus volumetric adders that change during the year—for example a distribution system charge of $0.025344 per kWh and a TCRF that is not the same in every month. Because part of delivery is per kWh, a hot month raises the wires line even if the TDU did not just win a rate case.

CenterPoint’s Houston Electric bill-transparency sheet for REP customers (charges as of ¹⁴) lists a base meter charge of $2.79 per meter per month and a base customer charge of $2.11 per customer per month, then volumetric PUCT-approved factors: DCRF, EECRF, nuclear decommissioning, base distribution, temporary emergency electric energy facilities (TEEEF), rate-case expense, and TCRF. CenterPoint notes that REPs must include a delivery charge but are not required to outline the breakdown, and that labels vary—TDSP, TDU, or “Delivery Charge.” TCRF, it says, is adjusted twice a year in March and September.

The practical test: if your energy rate looks unchanged on the Electricity Facts Label (EFL) and kWh is up, do not expect a new REP to delete the TDU line. If kWh is flat and the delivery line jumped in March or September, look at TCRF and other riders before you assume the retailer gouged you. If you want to protest a TDU rate case, that is a PUCT process, not a Power to Choose checkout flow. The Commission’s ¹² explains that TDUs must notify customers when they request a rate change and that affected customers may participate.

Fixed-rate retail plans do not freeze delivery. Power to Choose’s glossary states that a ⁶ holds the price per kWh during the contract except for changes in transmission and distribution fees, ERCOT or Texas Regional Entity administrative fees, or fees imposed by law beyond the REP’s control. A “fixed” contract can still produce a higher bill when TDU riders move. That is not bait-and-switch under the glossary’s own terms; it is how the product is defined.

Plan structure, expiration, and billing artifacts can mimic a usage crisis

After you confirm kWh, inspect the contract clock. The PUCT says that if you are served by a REP and you do not sign a new contract when the old one expires, you ¹ with the current provider. Power to Choose’s customer-rights list is more specific on notice: for a contract with three or more remaining months, the company must notify you in writing ³, from the end of the contract. The PUCT FAQ adds that REPs must notify residential customers at least 30 days before a contract expires, that a residential customer can switch without an early termination charge if the switch is no earlier than 14 days before the expiration date in the notice, and that inaction leaves you on a month-to-month product.

Variable and indexed products can produce a one-month shock without any change in the air conditioner. Power to Choose defines ⁶ as having no monthly contract or cancellation fee, with the per-kWh rate able to move each month at the company’s discretion and with market conditions, including spikes tied to natural disasters, cold winters, or adverse markets. Indexed plans move with a public formula. If your EFL says variable and your kWh did not, shopping is the lever.

Plan design can punish the usage you already have. Many plans impose a ³ if you use less than a threshold—typical cut-offs cited by Power to Choose are less than 500 or 1,000 kWh—and the fee may not appear as a separate line. Time-of-use and “free nights” products are another mismatch: average prices on the EFL and Power to Choose are based on the REP’s estimate of energy in discounted hours versus premium hours. If you do not shift usage, ⁶. A bill spike after you enrolled in nights-and-weekends is often a load-shape problem, not a broken meter.

Illegal or unauthorized charges belong in a complaint, not a usage audit. Power to Choose defines slamming as switching electric service without permission and cramming as adding charges for optional services without permission; both are illegal. Read the bill for new products. If a charge is unfamiliar, call the REP first; unresolved disputes go to the PUCT Customer Hotline at 1-888-PUC-TIPS (1-888-782-8477), as the ³ instructs.

Deposits and disconnect policy are separate from “why is August high,” but they change the total due. The PUCT FAQ states a REP may require a residential deposit of up to one-fifth of estimated annual billing or the sum of estimated billings for the next two months. Power to Choose states electricity can be disconnected for nonpayment after a termination notice giving ³ to pay or make payment arrangements. Those are cash-flow events. They do not tell you whether to re-shop.

When reducing usage should come first

Cut usage first when the diagnostic shows a kWh event: more cooling or heating degree-days, a longer cycle, new load, or equipment that is working harder. DOE’s heating and cooling guide is blunt about the cheap stack. Regular maintenance can ¹¹: professional inspection (air conditioners in spring, furnaces in fall), clean or replace filters monthly in peak seasons, keep outdoor units clear of debris, and fix crushed or disconnected ducts. Thermostat setback can save ¹¹ on heating and cooling costs when you are away or asleep. In summer, DOE advises setting the thermostat to the highest comfortable temperature when you are home; when you are not at home, it advises keeping the system running to avoid moisture and mold rather than shutting it off and then oversizing the recovery. That last point matters in humid Texas: “off all day, 68°F at 6 p.m.” is not the efficiency move people think it is.

ENERGY STAR’s field-based criteria for certified smart thermostats target cooling runtime reductions; EPA reports that, on average, savings are about ¹⁵, with more savings in climates that swing hard and less in homes that are always occupied. Treat $50 as a national average, not a Houston promise. The direction is still useful: if August kWh is the problem, a thermostat that actually sets up when the house is empty is a better first experiment than a 36-month contract.

Equipment replacement is a slower lever. DOE notes that systems over 15 years old are candidates for replacement, that SEER and EER measure cooling efficiency, and that ENERGY STAR central air conditioners must have a SEER of at least 15 in the guide’s framing, versus older SEER 10 equipment. Oversizing, the same guide warns, raises cost and can worsen humidity. Those are capital decisions. They are the right first move only if the bill spike is the new normal of a dying compressor, not a one-month heat dome or a variable-rate roll-off.

Do not “save” your way out of a minimum-usage fee by using even less if the EFL charges you for falling below 500 or 1,000 kWh. Read the fact sheet. If your summer kWh is high and your winter kWh is low, a plan with a winter minimum fee can look fine in August and ugly in March. That is a shopping problem discovered by usage analysis, not solved by it.

When a plan comparison is warranted

Shop when the diagnostic shows a price or product event: expired fixed term, variable or indexed rate, a plan whose EFL average at your real kWh is worse than alternatives, time-of-use mismatch, or a delivery-plus-energy total that is high even after you normalize kWh per day.

Power to Choose’s comparison questions are the checklist: price at 1,000 kWh including TDU and recurring fees; fixed versus variable versus indexed, and how changes are disclosed; contract length; deposit; payment options; what happens at expiration; missed-payment rules; early-termination penalty. The ³ is the required apples-to-apples sheet for rates, fees, and term. Click it. The marketing card is not the contract.

Switching itself is operationally ordinary. Power to Choose states there is ³ unless you request a special meter reading off-cycle, that there may be penalties for breaking an existing contract, that ERCOT sends a confirmation mailer, that you have three business days to change your mind after receiving the Terms of Service, and that the switch happens automatically within seven business days with no lapse in service. WattKarma’s ¹⁶ matches the no-outage point: the utility keeps delivering; only the supplier that bills energy changes. Enrollment through that ZIP search typically takes effect at the start of the next billing cycle, usually within one to two weeks depending on the meter-read schedule.

Early termination is the remaining math. If you are in a fixed term, compare remaining ETF against expected savings at your actual kWh, not at a 1,000 kWh teaser. WattKarma notes that customers can still compare while under contract and that ¹⁶ depend on usage and time left. If the ETF exceeds a few months of realistic savings, wait for the PUCT notice window and switch near expiration.

If the spike was an estimated bill or a 180-day correction, fix the billing issue with the REP before you change providers. You can still shop, but you should not treat a catch-up invoice as the going rate of a new EFL.

Compare on your usage, then check plans at your ZIP

The decision rule is short. If kWh per day rose and the average price did not, reduce cooling and heating load first, then revisit the plan when you have a clean month. If kWh per day is stable and the average price or contract status changed, compare plans now. If both changed, do the usage work in parallel with a comparison so you do not re-enroll into a product that still fails at 2,000 kWh.

Use actual bills, as ² requires, not a guess. Then search by ZIP so you only see products that exist in your TDU territory. WattKarma’s ⁸ is built around that ZIP step and displays rates at 500, 1,000, and 2,000 kWh across licensed providers in Oncor, CenterPoint, AEP Texas, and TNMP territories. Power to Choose remains the PUCT’s official shopping site if you want the Commission’s listing.

Read the EFL and Terms of Service before you enroll. Confirm fixed versus variable, TDU pass-through language, minimum-usage fees, time-of-use windows, and expiration rules. If a charge on the current bill still does not make sense after that, call the REP; if that fails, use the PUCT Consumer Protection path on the ¹. A high bill is not automatically a reason to switch. It is a reason to find out whether you used more power, paid a different price, or both—and to shop only when the price side is the one that moved.