San Antonio Power Bills: What You Control Without Choice

If you live in San Antonio, you do not shop retail electric plans the way a Houston or Dallas customer does. There is no Power to Choose menu of fixed-rate contracts, no Electricity Facts Label bake-off, and no mid-contract switch to a new retail electric provider. Your supplier is ¹, the city-owned utility. That does not mean the bill is fixed. It means the levers look different: kilowatt-hours, summer peak usage, efficiency, utility programs, payment tools, and civic pressure on rates—not provider shopping.

This guide is for households and small businesses that want a clear map of what still moves the number at the bottom of the statement when retail choice is off the table—and how those same habits help if you do live in a choice market.

Why San Antonio customers cannot switch providers

Texas opened most of the competitive ERCOT market to retail electric providers after a ². In those areas, you pick a retailer that sells the power while a wires company still delivers it, reads meters, and handles outages. Municipal utilities and electric cooperatives were ². San Antonio sits in that non-choice camp.

The ³ explains the structure plainly: municipally owned utilities may join customer choice only if their governing body adopts a resolution to do so. Until that happens, city council members—or the board they appoint—set retail rates. PUC oversight of munis is limited mainly to appellate review of retail rates and jurisdiction over wholesale transmission rates. If you dislike the service model, the formal feedback loop is local politics and board process, not a ZIP-code search on a shopping site.

That split is easy to miss because “Texas electricity” branding often implies statewide choice. It does not. ² states outright that not all Texans get to choose a provider; municipalities, cooperatives, and some investor-owned utilities outside fully competitive conditions are exceptions. Austin Energy customers face a similar municipal reality. Houston and Dallas-area customers generally do not.

None of that freezes your bill. It relocates the decision from “which retailer?” to “how much do I use, when do I use it, and which utility programs cut the load or the payment?”

What a CPS Energy bill is actually charging for

CPS Energy publishes a residential electric tariff with three base building blocks. As of the ⁴, customers pay a $9.50 monthly service availability charge, an energy charge of $0.07503 per kWh for all kilowatt-hours, and a peak capacity charge of $0.02150 per kWh on usage above 600 kWh during the summer billing months of June through September. The minimum bill is $9.50 before adjustments.

Those base pieces are only part of the story. ¹ separates charges into base rates, a monthly fuel adjustment, and a regulatory adjustment. The fuel adjustment covers generated power fuel costs (nuclear, coal, natural gas), renewable purchases, market power purchases, and a share of Sustainable Tomorrow Energy Plan (STEP) efficiency costs. It can show up as a charge or a credit depending on how actual fuel costs compare with the amount already baked into base rates. Regulatory adjustments recover ERCOT-wide transmission grid costs plus ERCOT and NERC/ERO administrative fees.

Two more line items matter for sticker shock. First, CPS Energy has been recovering Winter Storm Uri fuel costs through fuel adjustment factors; as of March 1, 2024, the Uri recovery factor listed on the bill guide was $0.00080 per kWh for retail electric customers. Second, the same statement can include City of San Antonio fees for services such as garbage collection and environmental fees. Those are city charges collected through the utility bill, not electricity prices—and CPS Energy is not the service provider for them.

After Board of Trustees approval on December 4, 2023, and City Council approval on December 7, 2023, rates rose 4.25% effective February 1, 2024, according to ⁵. The utility estimated about a $4.45 monthly impact on an average residential combined electric and gas bill. Separately, CPS Energy reports a recent 12-month average residential electric cost around 12.8 cents per kWh, with a projected monthly average near 13.4 cents per kWh for July 2026 on its ¹. Those all-in averages include more than the base energy charge alone—so comparing them to a deregulated “energy-only” offer requires care.

Fuel volatility still lands on customers even without retail shopping. In 2022, ⁶ reported statewide bill spikes driven largely by natural gas prices after Russia’s invasion of Ukraine; CPS Energy’s then-CFO noted that customers feel fuel-cost changes in real time. Regulated or not, generation fuel is a pass-through risk.

The lever that always works: kilowatt-hours

Bill = rate × usage (+ fixed fees). You cannot pick the retail rate in San Antonio, but you directly control usage. That sounds obvious until you look at how large Texas residential loads already are.

According to ⁷, Texas residential customers averaged 1,096 kWh per month at 14.94 cents per kWh, for an average monthly bill of $163.72. The U.S. average in the same table was 863 kWh, 16.48 cents per kWh, and $142.26 per month. Texas uses more electricity per home than the national average even when the statewide average price sits below the U.S. average. In a hot climate with heavy air conditioning, cutting kWh is not a side quest—it is the main quest.

⁸ notes that nearly half of home energy use goes to heating and cooling. That is why thermostat habits, filter changes, duct sealing, and equipment condition usually beat boutique gadget buys. An ENERGY STAR certified smart thermostat can cut heating and cooling costs by more than 8%—about $50 a year on average, or roughly $100 if the home is empty much of the day, per ENERGY STAR’s guidance. Sealing and insulating ducts can improve heating and cooling system efficiency by as much as 20%. Improper installation of new equipment can erase gains and cut system efficiency by up to 30%.

Low- and no-cost moves stack. ⁹ estimate that replacing your five most-used bulbs or fixtures with ENERGY STAR LEDs can save about $40 a year; certified LEDs use up to 90% less energy and last far longer than standard bulbs. ENERGY STAR room air conditioners use about 9% less energy than standard models. Closing shades against summer sun, clearing supply registers, washing laundry in cold water, and killing standby loads with a power strip are small individually and meaningful together.

For San Antonio summers, timing matters as much as total kWh because of the peak capacity charge. Every kWh above 600 in June–September carries an extra 2.15 cents on the tariff. Shifting laundry, dishwashing, and pool pumps off afternoon peaks does not change the energy charge, but it can keep more of your bill below that summer threshold—and it reduces strain on a grid that is often stressed in late-day heat.

Peak season math without retail time-of-use plans

Competitive markets often sell time-of-use or free-nights plans. CPS Energy’s residential tariff is not a full TOU product, but the summer peak capacity charge creates a blunt seasonal price signal: high summer usage is more expensive per kWh once you clear 600.

Work a simple example with the published base charges alone (before fuel and regulatory adders). At 1,200 kWh in July, base energy is 1,200 × $0.07503 ≈ $90.04. Peak capacity applies to 600 kWh × $0.02150 ≈ $12.90. Add the $9.50 service charge and you are already around $112 before fuel, Uri recovery, regulatory fees, taxes, and city services. Cut that month to 900 kWh and you save both energy charge and peak capacity on 300 kWh—roughly $22–$29 on those two line items alone, depending on how you count. The exact savings shift with fuel adjustments, but the direction does not: summer over-use is doubly expensive.

Demand-response programs turn that physics into bill credits. CPS Energy’s ¹⁰ pays an $85 enrollment credit per eligible thermostat and $30 per year while you stay enrolled. In return, the utility may nudge setpoints a few degrees during conservation events—typically on summer weekdays, with manual override available in the app or at the thermostat. That is not retail choice. It is a voluntary trade: a little comfort flexibility for cash and a smaller system peak.

Small commercial customers have a parallel path through ¹¹, with summer weekday event windows and performance payments such as $70–$73 per kW under the main June–September options (plus a lower $10 per kW bonus-hours track). If you run a shop, office, or light manufacturing site, peak management is often the highest-ROI “rate” strategy available without a competitive supplier.

Efficiency upgrades that move bills in any market

When you cannot shop for a cheaper cents-per-kWh offer, permanent load reduction is the closest substitute. CPS Energy’s Casa Verde weatherization path is built for that. The current ¹² serves income-qualified homeowners and renters (or households with high energy burden or other assistance enrollment). Registered Trade Allies assess the home and install measures such as attic and wall insulation, air sealing, duct sealing, LED bulbs, solar screens, AC tune-ups, smart thermostats, and window AC replacements, with CPS Energy rebating eligible costs.

A 2023 ¹³ said participants had averaged about $4,500 in weatherization improvements and roughly $450 a year in energy-cost savings, with the program already past 30,000 homes. Casa Verde sits inside STEP, which the same release described as a $350 million, five-year efficiency and conservation package approved by the Board and City Council in 2022, with goals including 410 MW of demand reduction and about 1% system-wide energy savings per year.

Even if you do not qualify for income-based weatherization, the physics still holds. Attic insulation and duct sealing attack the cooling load that dominates South Texas bills. Filter changes and annual tune-ups keep existing equipment from fighting itself. When replacement is due, ENERGY STAR-rated equipment is the default shortlist—not because of branding, but because ⁸ shows material annual bill cuts when old systems are replaced and installed correctly.

Rooftop solar and community solar offerings appear in STEP materials as another self-generation path. Treat solar like any capital project: model production against your actual summer afternoon load, confirm current rebate rules and interconnection steps with CPS Energy, and do not assume yesterday’s incentive sheet still applies. Rebates and program caps change.

Payment tools, discounts, and assistance when cash flow is the problem

Lowering kWh is the structural fix. Smoothing or discounting payments is the cash-flow fix. CPS Energy’s ¹⁴ groups both.

The ¹⁵ targets households at or below 150% of federal poverty guidelines that also meet at least one category such as age 60+, disability, life-sustaining medical equipment, children in the home, or energy bills above 10% of income. Starting February 2025, published discounts were $13.48 monthly on electric, $4.88 on gas, or $18.36 combined ($220.32 annual combined). Enrollment lasts a year and requires recertification.

The ¹⁶ averages roughly a year’s usage, adds a cushion for weather and fuel swings, and bills a steadier monthly amount, with periodic true-ups. CPS Energy says nearly 35,000 residential customers have used it. You generally need a year of history, a current balance, and a solid payment record. Modified budget options can fold past-due amounts into installments.

¹⁴—the Residential Energy Assistance Partnership with the city and county—can provide temporary bill help (the utility lists up to $400 per year for eligible households). Separate programs extend due dates for seniors, disabled customers, and critical-care medical equipment users, and there are burn-injury discounts for qualifying veterans and first responders. None of these replace usage reduction, but they keep lights on while efficiency work catches up.

If you are behind, call before the disconnect notice becomes a reconnect fee problem. Payment extensions and installment plans are listed alongside the discount programs for a reason: silence is the expensive option.

Civic levers when the provider is also local government

In competitive Texas territory, complaint escalation often runs through the retail provider and then the ². In San Antonio, rate levels and major program funding clear a public board and City Council process—visible in the ⁵ and in STEP’s council approvals. Showing up for rate cases, reading board packets, and contacting council offices is the consumer-choice substitute.

That is not romantic. It is the governance model. The ³ is explicit: if you favor competition, tell the board or council; a muni’s decision to enter retail competition is irrevocable once made. Until then, accountability is electoral and procedural.

Small businesses should treat the same channels as part of facility planning. Ask about commercial rebates, demand response enrollment windows, and whether a Budget Payment Plan fits seasonal cash cycles. A bakery’s July spike and a warehouse’s night load need different tactics, but both benefit from interval data review and a written peak plan before summer.

A practical checklist—regulated or competitive

1. Confirm your market type. Enter your ZIP on ¹⁷ or check your bill for CPS Energy versus a retail electric provider name. Do not assume Texas equals choice.

2. Read the whole bill once. Separate energy, fuel, regulatory, Uri recovery, and city service lines using CPS Energy’s ¹. You cannot manage what you mislabel.

3. Attack cooling load first. Filters, setpoints, shade, ducts, and insulation beat most other DIY moves in this climate, consistent with ⁸.

4. Respect the 600 kWh summer cliff. Track June–September usage against the ⁴. Shift flexible loads earlier or later in the day.

5. Enroll in paid flexibility if you can tolerate it. ¹⁰ and commercial demand response pay for peak help.

6. Apply for efficiency capital you qualify for. Start with ¹² if income-eligible; otherwise use STEP rebates and standard contractor upgrades.

7. Stabilize cash flow without ignoring usage. ¹⁵, ¹⁶, REAP, and hardship plans exist to be used.

*8. If you do have choice elsewhere,* shop with an Electricity Facts Label, watch minimum-usage fees, and still cut kWh—because a cheap rate on a leaky house is still an expensive house. EIA’s state averages show price and consumption both drive the monthly total.

San Antonio’s model removes one consumer tool—retail switching—and leaves the ones that mattered most all along: how the building uses power, how the household or business responds on hot afternoons, which utility programs you actually enroll in, and whether you treat rate governance as a local issue. Choice markets add a shopping step. They do not repeal physics.