You just bought your first house in Texas. Congratulations. Your electricity bill is about to triple.
That’s not a scare tactic—it’s math. As a new homeowner, you’re jumping from 700-900 kWh per month in an apartment to 1,200-1,800 kWh in a house. If your previous place was a 750-square-foot apartment, you might be moving into 2,000+ square feet with an aging HVAC system, a water heater the size of a small car, and maybe a pool pump that runs 8 hours a day.
Everything you knew about electricity costs from renting? Throw it out. Here’s what homeownership actually means for your electricity bill.
Your Usage Is About to Change Dramatically
Why Homes Use More Than Apartments
Square footage: The single biggest factor. More space means more air to heat and cool. A 2,000-square-foot home requires roughly 2.5x the cooling energy of an 800-square-foot apartment.
Exterior walls: Apartments share walls with neighbors (free insulation). A detached house has four exterior walls, all losing energy to the outdoors.
HVAC system: Apartment AC units are smaller and often maintained by the complex. Your home’s HVAC is your responsibility, and if it’s 15 years old, it’s working twice as hard as a modern system.
Water heater: Apartment water heaters are small (30-40 gallons). Your house probably has a 50-80 gallon tank that runs continuously.
Additional loads: Garage door openers, outdoor lighting, irrigation systems, pool pumps, a second refrigerator in the garage—all things you didn’t have in an apartment.
What to Expect at Different Home Sizes
| Home Size | Estimated Monthly kWh | Summer Monthly kWh | Estimated Summer Bill (at 12¢/kWh) |
|---|---|---|---|
| 1,200 sq ft | 1,000-1,200 | 1,400-1,600 | $168-192 |
| 1,800 sq ft | 1,300-1,600 | 1,800-2,200 | $216-264 |
| 2,500 sq ft | 1,600-2,000 | 2,200-2,800 | $264-336 |
| 3,500+ sq ft | 2,000-2,800 | 2,800-3,500 | $336-420 |
These are rough estimates. Your actual usage depends on insulation quality, HVAC efficiency, window quality, and your personal comfort preferences.
Choosing the Right Electricity Plan
The plan that saved you money in a 750-square-foot apartment could cost you hundreds extra in a house. Higher usage changes which plan features matter.
You Can Commit to Longer Contracts
Unlike renting, you’re not leaving in 12 months (probably). This means 24-month contracts are now viable. Longer contracts mean lower rates—typically 0.5-1.5 cents less per kWh than 12-month plans. Over 24 months at 1,500 kWh per month, that saves $180-540.
See our guide on electricity contract lengths for the full comparison.
Your Usage Tier Matters More
With 1,500+ kWh monthly usage, plan features that didn’t matter in an apartment become significant:
Base charges: A $10/month base charge adds less than 1 cent per kWh at 1,500 kWh. It’s not the dealbreaker it was at 500 kWh apartment usage.
Bill credits: Plans with bill credits at 1,000 kWh thresholds are more accessible because your usage naturally exceeds that level. But be cautious—your usage fluctuates seasonally, and you might dip below the threshold in spring and fall.
Tiered pricing: Plans with inverted tiers (cheaper rates at higher usage) favor homeowners. Plans that penalize high usage are designed for apartments.
Compare Plans at the Right Usage Level
When shopping on ComparePower, enter your estimated usage—not your old apartment usage. If you’re moving from an apartment at 800 kWh to a home that’ll use 1,500 kWh, compare plans at the 2,000 kWh tier on the Electricity Facts Label.
Providers like Frontier Utilities, Rhythm Energy, and Chariot Energy all offer competitive rates at higher usage levels. Compare them in our Frontier vs Rhythm breakdown.
The Homeowner Electricity Audit
One afternoon of inspection can cut $200-500 off your annual electricity bill. Do this within the first month of moving in.
1. Check Your HVAC System
Your HVAC is 40-60% of your electricity bill in Texas. An inefficient system is the single most expensive thing in your home.
What to check:
- Age: Systems over 15 years old are significantly less efficient. A 2010 system rated at 13 SEER is roughly 30% less efficient than a modern 16+ SEER system.
- Filter: Change the air filter immediately. A clogged filter forces the system to work harder. Check it monthly during summer.
- Ductwork: Look in the attic for disconnected or damaged ducts. Leaky ductwork wastes 20-30% of your cooling energy.
- Thermostat: If the house has an old programmable thermostat, replace it with a smart thermostat (Nest, Ecobee). Smart thermostats save 10-15% on cooling by learning your schedule.
Schedule a tune-up: A professional HVAC inspection costs $75-150 and can identify refrigerant leaks, dirty coils, and mechanical issues before they become expensive repairs. Do this before your first Texas summer.
2. Assess Your Insulation
Texas homes built before 2000 often have inadequate insulation, especially in the attic. Poor insulation means your AC runs constantly to fight heat gain.
Attic insulation: Look in the attic. If you can see the tops of the ceiling joists, you need more insulation. Texas homes should have R-38 to R-60 insulation in the attic (13-20 inches of blown cellulose or fiberglass).
Adding insulation: Professional blown-in attic insulation costs $1,500-3,000 for a typical home. It can reduce cooling costs by 15-25%. Most homeowners recoup the cost within 2-3 summers.
3. Check Your Windows
Single-pane windows, common in homes built before 1990, are energy sieves. They let heat pour in during summer and out during winter.
Short-term fix: Window film (reflective or low-E) costs $5-15 per window and reduces heat gain by 30-50%.
Long-term fix: Replacing single-pane windows with double-pane low-E windows costs $300-700 per window but dramatically improves efficiency and comfort. Focus on south and west-facing windows first—they get the most sun exposure.
4. Find Energy Vampires
Walk through the house and identify always-on electrical loads:
- Pool pump: Running a pool pump 8 hours per day at peak hours costs $60-100 per month in summer. Switch to off-peak hours (overnight) to reduce the per-kWh cost, or install a variable-speed pump that uses 70% less energy.
- Garage refrigerator: An old refrigerator in the garage uses $10-25 per month, especially in an un-insulated Texas garage where summer temps hit 110°F.
- Landscape lighting: Timer-controlled landscape lighting uses less than you think ($5-10/month), but check that timers are set correctly.
- Irrigation controller: Electric irrigation timers use negligible power, but the sprinkler system affects water bills.
5. Check Your Water Heater
Your water heater is the second-largest electricity consumer after HVAC.
Tank vs. tankless: A standard tank heater keeps 50 gallons of water hot 24/7, using 3,000-4,500 kWh per year ($360-540 at 12¢/kWh). Tankless heaters heat on demand and use 30-50% less energy. If your tank is over 10 years old, replacing it with a heat pump water heater (hybrid) saves $200-300 per year.
Temperature setting: Many water heaters are set to 140°F from the factory. Lowering to 120°F saves 6-10% on water heating costs and reduces scalding risk.
Your First Summer: What to Expect
Your first July bill will probably be the highest electricity bill you’ve ever received. Don’t panic — here’s what’s normal:
July-August Bill Shock
A 2,000-square-foot home in Dallas or Houston can easily use 2,500-3,000 kWh in July. At 12 cents per kWh plus TDU charges, that’s $350-450.
This is normal. Don’t call your provider thinking there’s an error — they get thousands of these calls every August.
How to Manage It
- Pre-cool your home: Run the AC hard in the morning when rates are lower and the system is more efficient
- Set the thermostat to 78°F: Every degree below 78 adds 3-5% to your cooling cost. Going from 72°F to 78°F saves roughly 20%
- Use ceiling fans: Fans don’t cool rooms, but they make you feel 4°F cooler, letting you raise the thermostat without discomfort
- Close blinds on south and west windows: Direct sunlight through windows adds significant heat load
- Avoid running major appliances during peak heat: Run the dishwasher and laundry after 8 PM
Consider a Time-of-Use or Free Nights Plan
With higher usage, time-of-use plans and free nights and weekends plans become more viable. If you can shift laundry, dishwasher, and pool pump operation to off-peak hours, the savings can be meaningful at homeowner usage levels.
Long-Term Investments That Pay Off
Owning your home means you can make energy upgrades that renters can’t. Several pay for themselves within 2-3 years.
Solar Panels
Texas has some of the best solar resources in the country. A typical 8-10 kW residential solar system costs $16,000-24,000 before the federal tax credit (30% credit brings this to $11,200-16,800).
Payback period: 7-10 years in most Texas metro areas Monthly savings: $100-200 depending on system size and usage
Solar makes the most sense for homeowners who plan to stay 10+ years and have south-facing roof space with minimal shading. Check our guide on Texas solar buyback programs for how to sell excess production back to the grid.
Smart Home Automation
A smart thermostat ($130-250) saves 10-15% on HVAC costs. Smart plugs ($10-15 each) let you schedule energy-hungry devices. A whole-home energy monitor ($150-300) shows exactly where your electricity goes.
Total investment: $300-600 Annual savings: $150-300 Payback: 1-2 years
Attic Fan or Radiant Barrier
An attic fan or radiant barrier reduces the attic temperature from 150°F+ to closer to outdoor temperature, reducing the heat load on your HVAC system.
Radiant barrier: $500-1,500 installed, saves 5-10% on cooling Solar attic fan: $300-600 installed, saves 5-15% on cooling in peak summer
The Bottom Line
Homeownership in Texas means higher electricity bills. There’s no getting around that. But the decisions you make in your first few months—choosing the right plan, auditing your HVAC, sealing your home—determine whether “higher” means $180/month or $350/month.
The checklist:
- Get your HVAC inspected and change the filter
- Check attic insulation (add more if you can see ceiling joists)
- Shop for a plan at your estimated usage level, not your old apartment usage
- Consider a 24-month contract to lock in a lower rate
- Set your thermostat to 78°F and use ceiling fans
- Run the pool pump overnight if you have one
Ready to compare plans for your new home? Head to ComparePower and enter your address to see what’s available.
Frequently Asked Questions
How much electricity does a Texas home use per month?
The average Texas single-family home uses 1,200-1,800 kWh per month, with summer peaks of 2,000-3,000 kWh. Usage depends heavily on home size, HVAC efficiency, insulation quality, and personal comfort preferences. A 2,500-square-foot home with an older HVAC system can easily exceed 2,500 kWh in July and August.
Why is my electricity bill so much higher in a house than an apartment?
Houses have more square footage to cool, more exterior walls losing energy, larger water heaters, and additional loads (pool pumps, garage, outdoor lighting). A typical apartment uses 700-900 kWh monthly while a similar-era house uses 1,200-1,800 kWh. The difference can double or triple your bill.
What electricity contract length should new homeowners choose?
If you’re planning to stay in your home long-term, 24-month contracts offer the best rates—typically 0.5-1.5 cents cheaper per kWh than 12-month plans. At 1,500 kWh monthly usage, that saves $90-270 per year. Wait until you’ve experienced one summer to understand your true usage before locking in.
What’s the single most impactful thing I can do to lower my home electricity bill?
Get your HVAC system inspected and maintained. HVAC accounts for 40-60% of Texas home electricity usage. A professional tune-up ($75-150), fresh filters, and sealed ductwork can reduce cooling costs by 15-25%. If your system is over 15 years old, replacing it with a high-SEER model offers the largest long-term savings.