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Your electricity in zip code 78255 is delivered by CPS Energy. This area is served by a regulated utility.
Residents in the 78255 zip code of San Antonio, Texas are served exclusively by CPS Energy, the municipally owned utility that powers most of Bexar County. Unlike deregulated areas of Texas where consumers shop among competing retail providers, 78255 operates under a regulated utility model — meaning CPS Energy sets and delivers your electricity rate without marketplace competition. As of March 2026, the average residential rate in this area is approximately 12.1¢/kWh. While you cannot switch providers, understanding your rate structure, available efficiency programs, and how your costs compare to neighboring zip codes can still make a meaningful difference in your monthly energy bill. This guide breaks down everything 78255 residents need to know.
As of March 2026, CPS Energy customers in the 78255 zip code pay an average residential rate of approximately 12.1¢/kWh. This figure reflects the all-in cost of electricity generation and delivery combined, since CPS Energy handles both functions as a vertically integrated municipal utility. Unlike deregulated Texas markets where energy charges and delivery (TDSP) charges appear as separate line items, CPS Energy bills consolidate these costs. The 12.1¢/kWh average is competitive by Texas standards — the statewide average in deregulated markets often runs between 11¢ and 15¢/kWh depending on contract type and provider, meaning 78255 residents are generally in a reasonable position cost-wise. Seasonal demand spikes during San Antonio's intense summer months — particularly July and August — can push effective per-kWh costs higher due to increased consumption, even if the base rate remains stable.
Because 78255 is a regulated, non-deregulated market, there are no short-term, medium-term, or long-term retail electricity contracts to compare. CPS Energy sets rates through a regulated approval process overseen by the City of San Antonio. However, CPS Energy does offer time-of-use (TOU) rate options for eligible customers, which can function similarly to strategic contract choices in deregulated markets. Customers who shift heavy usage — laundry, dishwashers, EV charging — to off-peak hours can meaningfully reduce their effective rate. Reviewing your current rate plan with CPS Energy directly is the closest equivalent to "shopping" available to 78255 residents.
CPS Energy is one of the largest municipally owned utilities in the United States, serving approximately 860,000 electric customers across San Antonio and surrounding Bexar County. Because it is a municipal utility rather than an investor-owned or deregulated provider, CPS Energy is not subject to the Texas retail electricity market governed by ERCOT's competitive framework. Delivery infrastructure — poles, wires, transformers — is owned and maintained by CPS Energy, and those costs are embedded in your rate. There is no separate TDSP charge to compare across providers, as there would be in cities like Houston or Dallas.
Neighboring San Antonio zip codes including 78201, 78202, 78204, 78205, and 78207 are all served by the same CPS Energy utility territory and face identical rate structures. There is no rate advantage to be gained by comparing providers across these zip codes — the regulated model applies uniformly across the city. Bexar County's median household income of $55,084 makes energy affordability a genuine concern, and CPS Energy does offer income-qualified assistance programs worth exploring if your household qualifies. Compared to deregulated Texas metros like Houston or Dallas, San Antonio residents trade provider choice for rate stability — a meaningful benefit during periods of market volatility.
Enroll in CPS Energy's Residential Time-of-Use rate plan and shift high-energy tasks — laundry, dishwashing, EV charging — to after 8 PM or before 3 PM on weekdays to avoid peak-hour surcharges during San Antonio's intense summer afternoons.
Apply for CPS Energy's free home energy audit program, which dispatches a certified technician to identify air sealing and insulation gaps common in older San Antonio homes, particularly those built before 1990 in neighborhoods like Southtown or Lavaca.
Install a programmable or smart thermostat and set it to 78°F or higher when away from home — in San Antonio's 100°F+ summer heat, every degree of setback can reduce cooling costs by approximately 3–4% per month.
Check eligibility for the CPS Energy REAP (Residential Energy Assistance Program) if your household income falls within federal guidelines — qualifying customers can receive direct bill credits and free weatherization upgrades that meaningfully reduce year-round energy expenses.
The 78255 zip code is served by CPS Energy, a municipally owned utility. San Antonio opted out of Texas electricity deregulation, meaning CPS Energy is the sole provider and rates are set through a regulated city approval process rather than open market competition.
The average residential electricity rate in 78255 is approximately 12.1¢/kWh as of March 2026. This all-in rate includes both energy generation and delivery costs, which CPS Energy bundles together on a single bill.
Since provider switching isn't available, focus on CPS Energy's time-of-use rate plans, energy efficiency rebate programs, smart thermostat incentives, and shifting high-consumption appliances to off-peak hours to reduce your effective cost per kilowatt-hour.
No. Unlike deregulated areas where delivery (TDSP) charges appear as a separate line item, CPS Energy consolidates generation and delivery costs into a single rate. There is no separate wires charge to compare across providers.
CPS Energy offers the SAVE program and partners with city and federal assistance programs including LIHEAP to help income-qualified Bexar County residents manage electricity costs. Contact CPS Energy directly or visit their website to check eligibility and apply.
Yes, generally. Deregulated Texas markets like Houston and Dallas often see residential rates ranging from 11¢ to 15¢/kWh depending on contract length and provider. San Antonio's regulated 12.1¢/kWh average is within a competitive range, with added rate stability.