Houston vs San Antonio.Which has cheaper electricity?
CenterPoint vs the CPS Energy municipal border. Voltcheckr compares every plan in both cities against your real usage — not just advertised rates.
Moving in? No bill needed — just your ZIP and home size.
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.
See the cheapest plan for YOUR usage.
Upload your bill and Voltcheckr ranks every plan available at your specific address — regardless of which metro you live in.
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- ✓When to lock in vs go month-to-month