San Antonio Summer Energy Bills in 2026: Why They Spike and 12 Ways to Cut Them

Guide overview

If your San Antonio electric bill jumped this summer, the most likely cause is not a brand new 2026 rate hike. It is the combination of much higher air-conditioning usage during our brutal Bexar County heat, the effect of CPS Energy's last base rate increase of 4.25 percent that took effect on February 1, 2024, and CPS Energy's summer Peak Capacity Charge that applies during the hot months to household usage above a monthly threshold of roughly 600 kWh. To be clear on the rate question: no new base rate increase took effect in 2025, and while CPS Energy has publicly discussed the possibility of a future increase, none has been confirmed as of this writing. Do not assume a new hike is behind your bill. In San Antonio, the enemy is heat load. Our long summers, radiant attic heat baking down through the roof, and slab-on-grade foundations that hold and radiate warmth all force your system to run for hours at a stretch. Older homes across Bexar County often have undersized or aging electrical panels, leaky ductwork, and thin attic insulation, all of which make the A/C work harder for less comfort. Cut the heat load and improve efficiency, and you cut both your everyday usage and your exposure to that summer peak charge. 1) Raise your thermostat a few degrees and use a schedule. Every degree higher in summer reduces runtime, and setting the temperature up while you are at work trims usage during peak afternoon hours. 2) Enroll in CPS Energy's WiFi Thermostat Rewards program. If you have a qualifying smart thermostat, you can earn a rebate and participate in summer conservation events. 3) Change your air filter monthly in summer. A clogged filter chokes airflow and makes the system run longer. 4) Seal obvious air leaks around doors, windows, and outlets. Weatherstripping and caulk keep conditioned air in and hot Bexar County air out. CPS Energy's Casa Verde weatherization program may help income-qualified households. 9) Use ceiling and portable fans so you stay comfortable at a higher setpoint, which directly reduces compressor runtime. 10) Shade west-facing windows and close blinds during the afternoon to cut the solar heat gain that drives your late-day cooling load. 5) Add or upgrade attic insulation. Given how much heat pours through San Antonio attics, bringing insulation up to recommended levels is one of the highest-impact moves, and CPS Energy STEP rebates cover attic insulation. 6) Get a professional A/C tune-up before and during peak season. A tune-up restores refrigerant charge and airflow, and CPS Energy rebates help cover qualifying tune-ups. Our HVAC license is TACLA26479R. 7) Seal and repair leaky ductwork. Leaks in attic ducts dump expensive cooled air into the hottest part of your house. 8) Replace an aging, inefficient central A/C or install a heat pump. High-efficiency equipment can qualify for CPS Energy Save Now rebates that range widely depending on the equipment. 11) Upgrade to a variable-speed or high-efficiency pool pump. Pool pumps are major energy users, CPS Energy offers pool pump rebates, and new circuits or panel work should be done under our electrical license TECL31793. 12) Have an older or overloaded electrical panel inspected and, if needed, upgraded. Many older Bexar County homes have panels undersized for modern A/C and appliance loads. Start with the free and low-cost DIY steps this week, then schedule the professional work that delivers the biggest heat-load reductions: insulation, duct sealing, tune-ups, and equipment upgrades. Get it done before the next stretch of triple-digit days. Stacking CPS Energy STEP and Save Now rebates on the contractor work lowers your out-of-pocket cost, and reducing usage below that summer threshold reduces your exposure to the Peak Capacity Charge. C.S.W. Power Solutions is a veteran-owned San Antonio general contractor holding electrical license TECL31793, plumbing license RMP46592, and HVAC license TACLA26479R, founded by Jajuan Williams. If you want the licensed HVAC and electrical work done right and want help identifying which CPS Energy rebates you qualify for, call us at 210-504-9796 and we will help you build a plan that fits your home and your budget.

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