Quick Answer
Texas electric bills average $177/month but spike to $300+ in summer. The 8 most common causes: wrong rate plan, AC overuse, TDU charges (Oncor, CenterPoint), poor insulation, phantom loads, peak pricing, and billing errors. Compare rates on ElectricRates.org to fix the #1 cause.
Why Texas Electric Bills Run High
Texas electricity bills are higher than you'd expect. The reasons aren't always obvious.
The average Texas household uses 1,096-1,176 kWh per month.[1] That's about 25% more than the national average of 863 kWh. Why? Long, brutal summers where AC runs constantly. Larger-than-average homes (Texas averages 2,170 square feet). And in many areas, electric heating instead of natural gas.
At current rates around 15.49¢/kWh, the average monthly bill runs about $177. But summer bills can easily hit $300, $400, or more in a poorly-insulated home with an aging AC system.
Here's the thing: most high bills have fixable causes. Some you can solve today. Others take more effort but pay off for years. Let's diagnose what's driving your bill up.
1. You're on the Wrong Rate Plan
The #1 reason for high Texas electric bills? People overpay for their rate plan.
Many Texans never shopped for electricity. They accepted whatever rate their provider offered when they moved in, or rolled onto a month-to-month variable rate after their contract expired.
Rate comparison:
| Plan Type | Typical Rate | Monthly Cost (1,000 kWh) |
|---|---|---|
| Variable rate (expired contract) | 18-25¢/kWh | $180-$250 |
| Fixed rate (shopped) | 8-12¢/kWh | $80-$120 |
| Potential savings | — | $60-$130/month |
Over a year, that's $720-$1,560 in potential savings.
Fix it:
- Check your current rate on your bill
- Compare against offers on Power to Choose or ElectricRates.org
- If you're paying more than 14¢/kWh, you're almost certainly overpaying
2. Your AC Is Working Overtime
Air conditioning typically accounts for 50-70% of a Texas electric bill during summer.
When it's 100°F outside for weeks straight, your AC runs constantly. That's expensive.
AC cost breakdown:
| Factor | Value |
|---|---|
| 3-ton central AC usage | 3,500 watts/hour |
| Running 12 hours/day | 42 kWh daily |
| At 12¢/kWh | $5/day or $150/month |
SEER efficiency matters:
| AC Age | SEER Rating | Efficiency |
|---|---|---|
| 10-15+ years old | SEER 10-12 | Baseline |
| Modern units | SEER 15-21 | 30-50% less electricity |
Fix it:
- Set thermostat to 78°F when home, higher when away
- Replace air filters monthly
- Consider a smart thermostat that learns your schedule
- If system is old, calculate whether a new unit pays for itself
3. TDU Delivery Charges Add Up
About 40% of your Texas electric bill isn't from your REP at all. It's TDU delivery charges.
Your Transmission and Distribution Utility (Oncor, CenterPoint, AEP Texas, or TNMP) charges for delivering electricity through the grid. These charges are the same regardless of which provider you choose.
Current TDU charges:[2]
| Component | Cost |
|---|---|
| Monthly fee | $4-8 |
| Per-kWh rate | 5-6¢ |
| Total at 1,000 kWh | $54-68 |
That's $54-68 before you pay a dime for actual electricity.
Fix it:
- You can't change TDU charges
- When shopping, look at the "average price at 1000 kWh" (includes TDU)
- Don't compare just the energy rate—that's only part of the picture
4. Your Home Leaks Energy
Poor insulation and air leaks make your HVAC work harder. That shows up on your bill.
Many Texas homes, especially those built before 2000, have inadequate attic insulation. Hot Texas sun beats down on the roof, radiating heat into your living space. Your AC runs longer to compensate.
Energy efficiency impact:
| Home Condition | Energy Use | On $200 Summer Bill |
|---|---|---|
| Poorly-sealed home | Baseline | $200 |
| Properly-sealed & insulated | 15-30% less | $140-170 |
| Monthly savings | — | $30-60 |
Fix it (from free to bigger investment):
| Action | Cost | Impact |
|---|---|---|
| Seal gaps (doors/windows) | Free | Medium |
| Weatherstripping | $10-50 | Medium |
| Insulate exposed ductwork | $50-200 | High |
| Add attic insulation (R-38+) | $1,000-2,500 | Highest |
Some Texas utilities offer rebates for insulation improvements.
5. Phantom Loads Drain Power 24/7
Devices use electricity even when you're not using them. It adds up faster than you'd think.
Common phantom load costs:
| Device | Power Draw | Monthly Cost (12¢/kWh) |
|---|---|---|
| Cable box | 25 watts | $2.16 |
| Game console (standby) | 10-15 watts | $1.00 |
| Smart TV | 5-10 watts | $0.65 |
| Computer monitor | 3-5 watts | $0.35 |
Multiply by a dozen always-on devices and phantom loads can account for 10-15% of your total usage.
The U.S. Department of Energy estimates phantom loads cost the average home $100+ per year.[3]
Fix it:
- Use smart power strips that cut power when devices aren't in use
- Unplug phone chargers when not charging
- Enable power-saving modes on game consoles and computers
- That second garage refrigerator? It costs $8-15/month to run
6. You're Paying Peak Rates
Some Texas plans charge more during peak hours. If you run appliances at the wrong time, your bill suffers.
Time-of-use plans and some variable rate plans charge premium rates during hot summer afternoons when ERCOT demand is highest.
Typical TOU rate structure:
| Time Period | Hours | Typical Rate |
|---|---|---|
| Peak (summer) | 1pm-7pm | 15-20¢/kWh |
| Off-peak | All other times | 8-10¢/kWh |
| Difference | — | Nearly 2x |
Running dishwasher, laundry, or pool pump during peak hours? You're paying premium rates for activities that could wait.
Fix it:
- Check your plan terms for time-based pricing
- Shift heavy usage to early morning or late evening
- Run dishwasher after 9pm
- Do laundry on weekends
- A programmable timer on your pool pump pays for itself quickly
7. Billing Errors and Estimated Reads
Sometimes the problem isn't usage at all. It's a billing mistake.
Most Texas meters are smart meters now, but errors still happen.
Common billing errors:
| Error Type | What Happens |
|---|---|
| Estimated reads | Bill based on guess, not actual usage |
| Rate misapplication | Wrong plan rate after switching |
| Wrong address | Charges for someone else's meter |
If your bill suddenly spikes without a matching usage increase, or if the kWh shown doesn't match your smart meter data, investigate.
Fix it:
1. Register at SmartMeterTexas.com to track actual usage (15-minute intervals)
2. Compare your meter data against your bill
3. If they don't match, contact your provider first
4. If that fails, file a complaint with the PUC of Texas
How to Lower Your Texas Electric Bill
Most Texas households can cut their electric bill 20-40% with the right combination of fixes.
Quick wins (do today):
- Shop for a better rate—saves $50-100/month
- Set AC to 78°F when home, 85°F when away
- Replace air filters
- Unplug unused devices
Medium effort (this month):
- Install a smart thermostat
- Seal air leaks around doors and windows
- Use smart power strips
- Shift heavy usage to off-peak hours
Bigger investments (big payoff):
- Add attic insulation
- Upgrade to a high-SEER AC unit
- Install energy-efficient windows
- Consider solar panels
Start with rate shopping. It's free, takes 10 minutes, and often delivers the biggest savings.
Frequently Asked Questions
What is the average electric bill in Texas?
Why is my electric bill so high when I'm barely home?
How much does AC cost to run in Texas?
Why did my electric bill double this month?
Do smart thermostats really save money in Texas?
Looking for more? Explore all our Texas Energy guides for more helpful resources.
About the author

Consumer Advocate
Enri knows the regulations, the fine print, and the tricks some suppliers use. He's spent years learning how to spot hidden fees, misleading teaser rates, and contracts that sound good but cost more. His goal: help people avoid the traps and find plans that save money.
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Topics covered
Sources & References
- U.S. Energy Information Administration (U.S. Energy Information Administration): "Texas households average 1,096-1,176 kWh monthly usage"Accessed Dec 2025
- Quick Electricity - TDU Charges (Quick Electricity): "TDU delivery charges include monthly fees and per-kWh rates"Accessed Dec 2025
- U.S. Department of Energy (U.S. Department of Energy): "Phantom loads cost the average home $100+ per year"Accessed Dec 2025
Last updated: December 31, 2025


