On Peak vs Off Peak Electricity in Texas (2026)

A Dallas homeowner signs up for what looks like a cheap electricity plan, runs the dishwasher and dryer every evening after work, and opens a summer bill that is a lot higher than expected. The plan was a time-of-use plan. Evening hours were on peak. Every appliance running at 7 p.m. was burning the most expensive electricity of the day.

This is not a rare story in Texas. The state's competitive electricity market gives shoppers real choices, including plans that charge different prices depending on the hour. Understanding what on peak means, and when off peak electricity hours actually fall, is the difference between using that structure to your advantage and getting caught off guard.

On peak refers to the hours when electricity demand across the grid is highest. Power plants are running at or near full capacity, wholesale prices spike, and retail plans built around time-of-use pricing pass some of that cost to customers.

In practical terms, on peak is the part of the day when the most people are doing the most things: running air conditioners at full blast, cooking dinner, charging phones, and watching television. The grid feels the weight of all that simultaneous demand, and the price of electricity reflects it.

Off peak is the opposite. Demand is low, grid stress is minimal, and wholesale electricity is cheaper. Plans that separate the two let customers shift heavy usage to off peak windows and pay less for the same kilowatt-hours.

Not every Texas electricity plan uses time-of-use pricing. Many Retail Electric Providers (REPs) sell flat-rate plans where the per-kWh price is the same around the clock. The on peak vs off peak distinction only matters if a customer is on a plan that prices the two windows differently. The Power to Choose site lists every available plan in a customer's area, and the Electricity Facts Label (EFL) for each plan discloses exactly how pricing is structured.

There is no single universal schedule. Each REP defines its own on peak and off peak windows, and those definitions appear in the plan's EFL. That said, a few patterns show up consistently across Texas time-of-use plans.

Weekday afternoons and evenings are the most common on peak window. A typical structure runs on peak from roughly 3 p.m. to 8 p.m. on weekdays, though some plans extend that window from as early as noon to as late as 9 p.m. The overlap with the hottest part of a Texas summer afternoon, when air conditioners are working hardest, is not coincidental.

Weekends and major holidays are almost always off peak on plans that distinguish the two, because commercial and industrial demand drops sharply when offices and factories are closed.

Night hours, generally from late evening through early morning, are off peak on most time-of-use structures. Running laundry, charging an electric vehicle, or running the dishwasher after midnight takes advantage of those lower rates.

The only reliable source for a specific plan's schedule is its EFL. Before signing up for any time-of-use plan, reading that document carefully takes only a few minutes and prevents the surprise that hit the Dallas homeowner above.

Texas electricity bills have two main cost layers. The REP charges for the electricity supply, which is where on peak and off peak pricing lives. The Transmission and Distribution Utility (TDU) charges pass-through delivery fees for maintaining the poles, wires, and meters that physically move electricity to a home. In the Dallas area that TDU is Oncor; in Houston it is CenterPoint; in parts of West and South Texas it is AEP Texas or TNMP.

TDU delivery fees are the same regardless of what time electricity is used. They appear on every plan in every territory, and they do not change based on on peak or off peak status. When comparing the all-in cost of a time-of-use plan, the supply savings during off peak hours are real, but the delivery charge is a fixed element that does not shrink.

This is why the EFL's all-in rate at 500, 1,000, and 2,000 kWh is a better comparison tool than looking at just the supply rate. The all-in figure at 1,000 kWh already folds in estimated delivery fees, giving a realistic picture of what electricity actually costs in that TDU territory.

As of July 2026, the Oncor service area (Dallas and surrounding areas) at 1,000 kWh shows a lowest advertised all-in rate of around 7.2 cents per kWh across approximately 131 active plans, with a median all-in rate of roughly 16.5 cents per kWh. That spread is wide, and time-of-use plans sit at various points across it depending on a customer's usage habits.

A household that can genuinely shift the bulk of its heavy usage to off peak hours may find a time-of-use plan beats a flat-rate plan. A household with less scheduling flexibility, or one where teenagers run appliances whenever they like, often comes out better on a flat-rate plan.

Rates vary by TDU territory and change with market conditions. For live comparison data across plans and territories, the Texas electricity page at ElectricRates.org pulls current EFL figures and updates regularly.

Time-of-use plans reward households with flexibility. A few profiles that tend to come out ahead:

Electric vehicle owners are often the biggest winners. Charging overnight, deep in the off peak window, can cut charging costs substantially compared to topping up during afternoon on peak hours. Some REPs offer EV-specific plans built around exactly this behavior.

Retirees and remote workers who are home during the day can run appliances in the morning before on peak windows open, then avoid heavy loads in the afternoon. That kind of scheduling is much harder for a household where everyone is at work or school until 5 p.m. and then wants to cook, do laundry, and run the dishwasher all at once.

Households with programmable or smart appliances, including smart thermostats, connected washers, and dryers with delay-start features, can automate the shift without relying on manual habit changes.

For households without that flexibility, a flat-rate plan often provides more predictable bills and lower risk of bill shock during peak summer months when avoiding the on peak window is hardest.

The Electricity Facts Label is a standardized disclosure document required by the Public Utility Commission of Texas (PUCT) for every retail electricity plan sold in the state. It lists the plan's pricing structure, contract length, cancellation fees, and the all-in average rate at 500, 1,000, and 2,000 kWh.

For a time-of-use plan, the EFL will explicitly define on peak and off peak hours and show how rates differ between them. It will also clarify whether weekends and holidays are treated differently from weekdays.

Power to Choose (powertochoose.org) links to the EFL for every plan it lists. Comparing two or three EFLs side by side, rather than relying on headline numbers in advertising, is the most reliable way to understand what a plan will actually cost given a household's real usage patterns.

If a plan's on peak rate is significantly higher than the median 16.5 cents figure seen in the Oncor territory as of July 2026, and a household cannot reliably shift usage, the math on that plan is unlikely to work out.

Texas customers in competitive areas have the right to switch REPs. If a current plan is not working, whether because on peak hours are unavoidable or because a better flat-rate deal is now available, switching is straightforward. There is no need to contact the TDU directly. The new REP handles the transition, and the TDU continues delivering power without interruption.

Watch for early termination fees on fixed-rate contracts. Those appear in the EFL under the cancellation section. Some plans have no termination fee; others charge a flat fee or a per-month-remaining fee. Factor that cost into the savings calculation before switching mid-contract.

For a full look at current plan options, rates by territory, and plan-type breakdowns, visit ElectricRates.org's Texas electricity hub or go directly to powertochoose.org to see every PUCT-registered plan available at a specific address.

On peak hours are when the grid is busiest and electricity costs the most under time-of-use pricing. Off peak electricity hours are when demand falls and rates drop. Whether that structure saves money or costs more depends almost entirely on a household's ability to shift its biggest loads, air conditioning, laundry, dishwashers, EV charging, away from those high-demand windows.

Texas's competitive market means no one is locked into a plan that does not fit. With 131-plus plans active in the Oncor territory alone as of July 2026, the right plan is almost certainly out there. The work is in reading the EFL carefully and being honest about when electricity actually gets used.