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How to Lower Summer Energy Costs in Texas

A practical Texas guide to lowering summer energy costs by reducing AC waste, checking your plan documents, using account tools, and knowing when a different electricity plan may actually help.

RCByRoi CahanaFact checked9 min read
A clean air filter being replaced in a home HVAC return vent

Key Takeaways

  1. 1Most summer bill reductions start with lowering kWh usage, especially AC runtime during long Texas heat spells.
  2. 2Thermostat schedules, clean filters, clear vents, fans in occupied rooms, and closed sun-facing window coverings are the fastest low-cost actions.
  3. 3Texas shoppers should compare plan documents, not just advertised rates, before switching during summer.
  4. 4Free nights, weekends, and time-based plans only help when the household can shift enough usage away from paid periods.
  5. 5If the bill is unaffordable, payment options and assistance programs should be checked before cutting cooling to unsafe levels.

Start With The Bill Before Changing Habits

A high summer bill often starts with one simple question: how many kilowatt-hours did the household actually use compared with the same month last year. Many Texas electricity shoppers discover that the jump comes from extra air-conditioning runtime during long stretches of 100-degree weather rather than a sudden change in the advertised rate.

Before shopping plans, pull the most recent bill and last summer's bill if available. Note total kWh and the final amount due. Then open the Electricity Facts Label, Terms of Service, and Your Rights as a Customer disclosure for the current plan. These documents show whether base charges, delivery charges, or usage tiers shifted even when the headline rate stayed the same. Separating usage from pricing lets you decide whether habits or the plan itself needs attention first.

Check kWh First, Then The Rate

Compare kWh month-over-month before blaming the plan. A 400-kWh increase can easily add $50 or more to the bill in summer regardless of the energy charge.

What Changed Since Last Summer

Look for an expired contract, a move into a higher usage tier, a lost bill credit, or a new base fee. Any of these can raise the total even when daily habits feel unchanged.

Why Texas Summer Electricity Bills Jump

Cooling demand drives most summer spikes. Air conditioners run longer each day when daytime highs stay in the upper 90s or above. A fixed-rate plan locks the energy charge but leaves delivery charges, monthly base fees, and any minimum-usage rules exposed to change.

The two practical levers that remain are using fewer kWh overall and making sure the plan matches the home's real summer usage pattern. Delivery charges are set by regulated utilities and appear on every bill, so plan changes alone cannot remove them.

Usage Spikes Before Most Fees Do

Higher runtime is the first and largest factor for most homes. Once the system runs steadily for hours, even small inefficiencies add up quickly.

The Plan Can Still Matter

If the current contract has ended or the rate structure no longer matches usage, switching can still help. Review the full Electricity Facts Label rather than the teaser rate before deciding.

Set The Thermostat For Cost And Comfort

Most households save energy by keeping the thermostat at the warmest temperature that still feels safe and comfortable. Many Texas homes settle around 78 degrees during occupied hours when humidity is high, then raise the setting a few degrees when no one is home and indoor conditions allow.

Setting the thermostat much lower does not cool the house faster. It only keeps the system running longer once the target temperature is reached.

What 78 Degrees Really Means

The setting works best when combined with ceiling fans in occupied rooms and closed sun-facing coverings. Comfort varies with pets, humidity, and activity level.

Do Not Crank The AC Lower To Cool Faster

Lowering the setpoint by several extra degrees simply extends run time without shortening the time needed to reach a comfortable temperature.

Use Fans Without Wasting Electricity

Ceiling fans improve comfort by moving air across skin, not by lowering room temperature. Run them only in rooms that are occupied and turn them off when leaving.

In summer, set the direction so blades push air downward to create a cooling breeze. Fans are a comfort tool, not a substitute for adequate cooling during extreme heat.

Raise The Thermostat Only If The Fan Keeps You Comfortable

Test the combination for a day or two. If the higher setting still feels too warm, return to the previous temperature.

Turn Fans Off In Empty Rooms

Leaving fans running in vacant rooms wastes electricity without providing any benefit.

Keep The AC From Working Harder Than It Has To

Monthly filter checks become practical during heavy summer use, especially in homes with pets or daily system runtime. A dirty filter restricts airflow and forces the unit to run longer.

Keep supply registers and return vents free of furniture, rugs, and curtains. Move heat-producing devices such as lamps and electronics away from the thermostat when possible.

Call for professional maintenance if the system short-cycles, cools unevenly, or struggles to hold temperature on normal days.

Change Filters More Often During Heavy Summer Use

Check at least once a month when cooling demand is high. Replace sooner if the home has pets or visible dust buildup.

Keep Vents And Thermostats Clear

Clear airflow helps the system reach the set temperature without extra runtime.

Block Heat Before It Reaches The Room

Close curtains, blinds, or shades on east- and west-facing windows before the afternoon sun hits. Keeping heat out reduces the load on the air conditioner during peak hours.

Reflective window film or heavier heat-blocking treatments can help in rooms with large glass areas. Longer-term options such as exterior shade structures or strategic landscaping reduce solar gain on a broader scale.

Close Sun-Facing Windows Before The Room Heats Up

Act early in the day rather than after the indoor temperature has already risen.

When Reflective Film Or Better Coverings Make Sense

Weigh upfront cost against expected savings, especially for renters who may move before the payback period ends.

Seal The Biggest Leaks First

Check around doors, windows, attic hatches, and plumbing penetrations for gaps that let cooled air escape. Use caulk for fixed openings and weatherstripping around doors and operable windows.

These steps keep conditioned air inside and reduce how often the system must run. Larger insulation or duct-sealing projects usually require a contractor and landlord approval when applicable.

Where Hot Air Usually Gets In

Focus first on the most obvious gaps that are easy and inexpensive to address.

Move Hot Chores Out Of Peak Heat

Oven use and appliance cycles add heat that the air conditioner must remove. Run dishwashers, laundry, and ovens during cooler morning or evening hours when household routines allow.

Shifting these loads saves the most when the electricity plan includes time-based pricing or free periods. Full loads reduce the number of cycles needed.

Cooking And Laundry Can Add To Cooling Load

Limit indoor heat sources during the hottest part of the day.

Peak Hours Only Matter If Your Plan Prices Them

Check your specific plan documents before rearranging daily schedules around time periods.

Trim Smaller Loads That Add Up

Unplug unused chargers and small electronics or use a smart power strip to cut phantom power. Avoid setting the water heater or refrigerator colder than necessary.

These changes produce smaller savings than cooling adjustments, yet they require almost no effort once set up.

Phantom Power Is Small But Easy To Cut

Focus on devices that stay plugged in year-round even when not in use.

Water Heating Still Counts In Summer

Lowering the water heater temperature by a few degrees can reduce overall energy use without affecting hot-water comfort.

Check Your Texas Electricity Plan

Compare the current bill's effective cost per kWh against the Electricity Facts Label for any new plan under consideration. Review the average price at your actual summer usage level, base charges, delivery charges, and any early termination fee.

Switching helps most when the existing contract has ended, the rate has become variable, or credits no longer apply reliably to your usage.

Read The Electricity Facts Label Before You Switch

Look beyond the headline rate at every component that affects the final bill.

Watch For Usage Credits And Base Fees

These line items can change the total even when usage stays steady.

Do Not Ignore The Early Termination Fee

Confirm the fee amount and remaining contract length before requesting a switch.

Be Careful With Free Nights And Time-Based Plans

Free-nights or free-weekends plans only reduce the bill when enough usage can shift into the free window. Homes that run air conditioning heavily during paid daytime hours often see little net savings.

Review hourly usage data if the provider supplies it. Compare total summer cost under the time-based structure against a straightforward fixed-rate option before switching.

Daytime AC Can Outweigh Free Periods

Estimate how much cooling load falls outside the free window.

Use Your Usage History Before Choosing

Rely on actual meter data rather than assumptions about when the household uses electricity.

Use Alerts, Audits, And Account Tools

Set usage alerts or weekly summary emails through your provider account to spot spikes early. A home energy assessment can identify the largest remaining savings opportunities before money is spent on upgrades.

Program availability varies by provider, utility area, and eligibility rules.

Set Usage Alerts Before The Next Heat Wave

Early notice helps adjust habits before the next bill arrives.

Find Help If The Bill Is Already Unaffordable

Contact the current provider first to ask about payment arrangements or deferred plans. Then check local, state, nonprofit, and federal assistance or weatherization programs.

Do not rely on unsafe indoor temperatures as a bill-control strategy during extreme heat. Acting early prevents past-due balances from growing harder to resolve.

Do Not Trade Safety For A Lower Bill

Extreme indoor heat carries real health risks, especially for vulnerable household members.

Where To Look For Assistance

Start with the provider, then expand to city and county programs that may offer additional support.

Put Money Into Upgrades In The Right Order

Begin with low-cost steps such as a programmable or smart thermostat, filter changes, and window coverings. Move to insulation, duct sealing, or HVAC replacement only after smaller fixes are in place and still producing results.

Solar and major equipment changes require quotes, financing review, and consideration of ownership timeline and roof condition.

Smart Thermostat, Insulation, HVAC, Then Solar

Match the scale of the project to the size of the ongoing problem.

When An Upgrade Is Too Expensive For The Problem

Run the numbers on expected savings versus total cost before committing.

Summer Advice For Renters And Apartments

Renters can still lower summer costs through thermostat schedules, curtains, fans in occupied rooms, and accessible filter changes. Ask the landlord before adding caulk, window film, or new thermostat hardware.

When comparing plans, use expected summer kWh rather than advertised rates alone. Window or portable units may cool a single room more efficiently than central air in smaller apartments, but results depend on insulation and runtime.

What Renters Can Usually Change

Focus on daily habits and accessible maintenance while confirming any permanent changes with property management.

A Practical Week-One Plan

  • Day one: review recent kWh usage, current plan documents, contract end date, and any early termination fee.
  • This week: set a thermostat schedule, replace the filter, clear vents, close sun-facing coverings, and turn off fans when rooms are empty.
  • This month: compare plans if the contract is ending or the rate structure no longer fits summer usage.
  • Before larger spending: request an assessment or quote and compare expected savings against the upfront cost.

Summer Energy Cost FAQs

Editorial standards

SlashPlan publishes independent guidance to help Texans compare electricity plans. Our editorial team reviews each article without advertiser influence. See our editorial guidelines and monetization disclosure.

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About the author

Roi Cahana

Energy advisor helping Texans better understand their electricity options and make more confident decisions. Focused on simplifying electricity plans, explaining confusing terms, and sharing practical guidance to help readers avoid common mistakes when comparing rates, contracts, and renewals.

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