The cost of a professionally installed residential solar system in Texas is about $2.25 per watt as of September 2026. EnergySage reports an average system size of 12.91 kilowatts, putting the typical price at approximately $29,087 before incentives.
Your final price will depend on the system size, roof condition, equipment, location and installer.
For many Texas homes, a reasonable starting budget is:
| Solar system size | Estimated installed cost before incentives* |
|---|---|
| 5 kW | About $11,250 |
| 7 kW | About $15,750 |
| 8 kW | About $18,000 |
| 10 kW | About $22,500 |
| 12.9 kW | About $29,000 |
*These figures use the Texas marketplace average of about $2.25 per watt. Other Texas estimates range from approximately $2.38 to $3.14 per watt, which would put a 7 to 10 kW system at about $16,660 to $31,400 before incentives.
What Does the Solar Price Include?
A standard solar quote usually includes the panels, installation and the equipment needed to connect the system to your home. It may cover:
- Solar panels
- Inverters
- Roof racking and mounting equipment
- Wiring and electrical equipment
- Engineering and system design
- Permits and inspections
- Installation labor
- Utility interconnection paperwork
- Monitoring equipment
Check the proposal for items that may sit outside the base price. These can include a main electrical panel upgrade, roof repairs, tree trimming, sales fees and battery storage.
How Much Does a Solar Battery Add in Texas?
A solar battery is a separate cost from the panels. The price depends on its usable capacity, the loads it must support during an outage, installation complexity and warranty.
A battery may make sense if you:
- Want backup power during outages
- Receive a low export credit for excess solar power
- Use most of your electricity at night
- Need to reduce grid imports during expensive periods
A battery is not required for every grid-connected solar system. Its financial value depends largely on how your electricity provider credits excess generation.
Is the 30% Federal Solar Tax Credit Available in 2026?
No. Under the current IRS guidance, the federal Residential Clean Energy Credit is not available for a residential solar system placed in service after December 31, 2025. The former credit covered 30% of eligible costs for qualifying property installed from 2022 through December 31, 2025.
A homeowner installing a $25,000 system in 2026 should not automatically subtract $7,500 from the price. If a salesperson advertises a 30% federal residential tax credit for a new 2026 installation, ask for current tax documentation that supports the claim.
Are There Texas Solar Incentives?
Texas does not offer a statewide residential solar rebate or grant, according to the Public Utility Commission of Texas consumer solar guide. The state does offer a property tax exemption for the value added by qualifying solar or wind-powered energy devices used mainly for on-site energy production.
The property tax exemption does not lower the installation invoice. It can keep the added value of the solar system from increasing your taxable property value. Homeowners generally apply through their county appraisal district using Texas Comptroller Form 50-123.
Some cities and utilities have their own programs. San Marcos Utilities, for example, offers a solar photovoltaic rebate and buys excess solar power through its local program. Program rules depend on the utility serving your address, not just the city or state where you live.
Why Do Solar Quotes Vary So Much in Texas?
The biggest price differences usually come from system size, the roof, equipment, electrical work and utility rules.
System Size
A larger home or a home with high electricity use needs more panels and a larger inverter. Air conditioning, pool pumps, electric water heating, workshops and electric vehicles can all increase the required system size.
Roof Condition and Design
A newer roof with broad, usable sections often costs less to work on than a complex roof. The following can raise the installation cost:
- Multiple roof sections
- Steep slopes
- Heavy shade
- Tile or specialty roofing
- Limited usable space
- Structural concerns
Replacing a roof before installing solar can add thousands of dollars to the project.
Equipment Selection
Premium panels, microinverters, enhanced monitoring and high-capacity batteries usually cost more than standard equipment. Higher-efficiency panels can help when roof space is limited, but they do not always produce the lowest total project price.
Electrical Upgrades
Older homes may need a main service-panel upgrade, additional disconnects or other electrical work before interconnection. Ask the installer to list these costs separately in the proposal.
Utility Rules
Texas does not have one statewide residential net-metering program. Your retail electric provider, municipal utility or cooperative decides how it credits excess electricity. The Public Utility Commission says buyback rates are set by the electric provider's contract and are usually lower than the retail rate you pay for electricity.
A system that sends a large amount of electricity to the grid during the day may produce less financial value when the export rate is low or when the provider offers no one-to-one credit.
What Should You Compare in a Texas Solar Quote?
Compare the cash price and system assumptions before comparing monthly payments. Look for:
- Cash price before incentives
- Installed price per watt
- System size in kilowatts
- Estimated annual electricity production
- Expected percentage of electricity offset
- Panel and inverter warranties
- Battery price and usable capacity
- Loan interest rate and dealer fees
- Utility export-credit rate
- Roof repairs, electrical upgrades and other exclusions
A low monthly payment can hide a long loan term, high interest, escalating payments or a large dealer fee. Request both the cash price and the full amount you would repay through financing.
How Can You Avoid an Overpriced Solar System?
Use these figures as an initial screening guide:
- About $2.25 per watt installed is close to the current EnergySage Texas marketplace average.
- Quotes from about $2.38 to $3.14 per watt can occur when roof work, equipment or local installation conditions raise the cost.
- A quote well above that range should explain the difference, especially if it does not include a battery or major electrical work.
- Compare at least three written proposals using the same system size and battery assumptions.
- Confirm the installer's insurance, workmanship warranty and responsibility for utility interconnection.
- As of September 1, 2026, most Texas residential solar retailers and salespersons must be registered with the Texas Department of Licensing and Regulation.
Bottom Line
Start with the cash price per watt, not the advertised monthly payment. Then check the utility's export-credit terms, the battery assumptions, the roof and electrical work, the loan fees and the installer's responsibilities.
For a 7 to 10 kW system, the quoted price should make sense against the Texas benchmarks above. If it does not, ask the installer to explain each difference in writing before you sign.