You just bought your first house in Texas. Congratulations. Your electricity bill is about to double.
That’s not a scare tactic—it’s math. As a new homeowner, you’re jumping from roughly 600-900 kWh per month in an apartment to 1,200-1,800 kWh in a house (the statewide average across all Texas homes was 1,096 kWh per month in 2024, per EIA). 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 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 uses noticeably more electricity than a modern system for the same cooling.
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. The 12¢ figure is an energy charge only; Texas’s all-in average residential price was 15.9¢ per kWh in June 2026 (EIA), so add TDU delivery charges to these numbers.
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. A 24-month contract locks your rate for two years; whether that rate beats the 12-month rate varies by company and month, so compare both at your usage on the EFL. Every 1 cent per kWh you save is worth $360 over 24 months at 1,500 kWh per month.
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
Heating and cooling is almost half of a typical home’s energy bill, according to ENERGY STAR. 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 20% 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. In a typical house, 20-30% of the air moving through the ducts is lost to leaks and bad connections (ENERGY STAR).
- 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. ENERGY STAR recommends R-49 for an uninsulated attic in Texas’s climate zones, or adding R-38 if you already have 3-4 inches (roughly 11-20 inches of blown cellulose or fiberglass, depending on the material).
Adding insulation: Professional blown-in attic insulation costs $1,500-3,000 for a typical home. ENERGY STAR estimates air sealing plus attic insulation saves about 15% on heating and cooling costs. At that rate a $1,500-3,000 job pays back over several years, faster in a large, poorly insulated house.
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 blocks part of the solar heat gain; DOE notes films work best in climates with long cooling seasons.
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. If you’re on a time-of-use plan, run it during the cheap hours (on a flat-rate plan, moving it overnight doesn’t change the per-kWh cost). Or install a variable-speed pump: ENERGY STAR notes a pump running at half speed uses about one-eighth the 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 are 24-34% more efficient for homes using 41 gallons of hot water a day or less, 8-14% for heavy users (DOE). If your tank is over 10 years old, replacing it with a heat pump water heater (hybrid) saves a household of four about $550 per year (ENERGY STAR).
Temperature setting: Many water heaters are set to 140°F from the factory. Lowering to 120°F saves 4-22% a year on water heating (DOE) 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 in the morning when it’s cooler outside and the system is more efficient (rates only differ by hour if you’re on a time-of-use plan)
- Set the thermostat to 78°F: That’s DOE’s recommended summer setting. Every degree you raise it saves money, and DOE says a 7-10°F setback for 8 hours a day alone saves up to 10% a year on heating and cooling
- 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 about $18,000-22,500 installed at Texas’s September 2026 average of $2.25 per watt (EnergySage). The 30% federal tax credit for homeowner-purchased systems ended for systems placed in service after December 31, 2025, so budget without it.
Payback period: about 13 years on average in Texas (EnergySage, September 2026) 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 lowers attic temperatures, reducing the heat load on your HVAC system.
Radiant barrier: $500-1,500 installed, saves 5-10% on cooling in a warm, sunny climate (DOE) Solar attic fan: $300-600 installed; savings are smaller and less documented than a radiant barrier’s
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 your rate for two years
- 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 ZIP code to see what’s available.
Frequently Asked Questions
How much electricity does a Texas home use per month?
The average Texas home used 1,096 kWh per month in 2024 across all housing types (EIA); single-family houses run higher, so plan on 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 600-900 kWh monthly while a similar-era house uses 1,200-1,800 kWh. The difference can double your bill or more.
What electricity contract length should new homeowners choose?
If you’re planning to stay in your home long-term, a 24-month contract locks your rate for two years, but it isn’t always cheaper than a 12-month plan; compare both at your usage. Each 1 cent per kWh difference is worth $180 per year at 1,500 kWh monthly usage. 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. Heating and cooling is almost half of a typical home’s energy bill (ENERGY STAR). A professional tune-up ($75-150), fresh filters (a clean filter alone cuts AC energy use 5-15%, per DOE), and sealed ductwork all bring that down. If your system is over 15 years old, replacing it with a high-SEER model offers the largest long-term savings.