Houston vs San Antonio.Which has cheaper electricity?
CenterPoint vs the CPS Energy municipal border. We priced every plan in both cities against your real kWh — not the advertised teaser rate.
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Which city wins?
In Houston, every household can shop 200+ retail electricity plans and should expect to find an effective rate between 10¢ and 14¢/kWh depending on usage. Inside San Antonio city limits, you have no choice — CPS Energy is the only option, period. But the moment you cross into AEP Texas territory (much of Bexar County's outer suburbs + all surrounding counties), you can shop the same way Houston does. Check your address on your current bill — if it says "AEP Texas" as the TDU, Voltcheckr can rank plans for you. If it says "CPS Energy," you're on the municipal carve-out and there's nothing to shop.
Houston
Houston residents use about 40% more electricity than the U.S. average, thanks to the long summers. A bad fixed-rate plan in Houston costs more than almost anywhere else in Texas.
San Antonio
Inside the San Antonio city limits you're on CPS Energy, a municipal utility that's not deregulated — no shopping. Outside the city, on AEP Texas territory, you can pick from every retail plan in Texas. Voltcheckr will tell you which side you're on.
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- How to read your current bill (and spot hidden fees)
- Why the advertised rate is almost never what you actually pay
- The exact questions to ask before you sign a 12-month plan
- When to lock in vs go month-to-month