Professional solar panel installation for a typical U.S. home costs about $18,000 to $40,000 before state, utility or local incentives. A useful planning figure is $2.60 to $3.35 per watt installed. The final price depends on the system size, location, roof, equipment and installer.
In 2026, EnergySage reports an average price of $31,135 before incentives for a 12-kilowatt residential system.
The federal 30% Residential Clean Energy Credit does not apply to new residential clean-energy expenditures made after December 31, 2025. Homeowners installing solar in 2026 should not subtract that credit from a quote. State, utility and local incentives may still lower the cost.
Estimated Solar Installation Cost by System Size
A larger solar system costs more overall, but the price per watt may be lower.
| Solar system size | Estimated installed cost before local incentives |
|---|---|
| 5 kW | $13,000 to $16,750 |
| 7 kW | $18,200 to $23,450 |
| 10 kW | $26,000 to $33,500 |
| 12 kW | $31,200 to $40,200 |
| 15 kW | About $37,000 and up |
These figures use an installed price of approximately $2.60 to $3.35 per watt. EnergySage reports an average price of about $18,340 for a 7-kilowatt system based on its 2026 marketplace data.
What Is Included in a Solar Installation Quote?
Most solar quotes include:
- Photovoltaic solar panels
- Inverters or microinverters
- Roof racking and mounting hardware
- Electrical wiring and related equipment
- Installation labor
- Permit applications
- Inspection and utility interconnection
- System monitoring
- Installer overhead and warranty support
The panels are only one part of the project. EnergySage estimates that panels account for about 12% of a typical system price. The rest covers items such as inverters, wiring, labor, permits, marketing, overhead and installer profit.
The U.S. Department of Energy divides solar project costs into modules, inverters, structural equipment, electrical equipment, fieldwork, office work and other expenses. Permit, inspection and interconnection rules also affect the final price.
How Much Does a Solar Battery Add?
Adding a home solar battery costs about $15,000 on average before incentives, according to EnergySage data. The price depends on battery capacity, backup requirements, installation complexity and whether the project needs an electrical-panel upgrade.
A battery may be useful if you want:
- Backup power during outages
- More use of your own solar electricity after sunset
- Less reliance on utility electricity prices
- Protection from unfavorable utility buyback rates
Storage is not automatically the best financial choice. Ask for separate prices for a solar-only system and a solar-plus-storage system.
What Changes the Price of a Solar Installation?
System Size
A larger system costs more, but it can have a lower price per watt. The right size depends on your annual electricity use, utility rates, local sunlight, available roof space and planned loads such as an electric vehicle or heat pump.
Roof Condition and Design
A newer roof with a simple layout usually costs less to use than a roof with several angles, dormers, skylights or difficult access.
If the roof needs replacement soon, replace it before installing solar. Panels and mounting equipment may need to come off and go back on during a future roof replacement.
Shade and Roof Orientation
Trees, nearby buildings and roof direction affect electricity production. South-facing roofs often perform well, but east- and west-facing roofs can also work. Heavy shade may require tree work, a larger system or a different layout.
Local Labor and Permitting
Solar prices differ between states and cities because labor rates, permit fees, inspection requirements, utility rules and interconnection procedures vary.
Local governments generally require permits and inspections before a rooftop system can operate on the grid.
Equipment Selection
Premium panels, high-efficiency modules, microinverters, advanced monitoring systems and batteries can raise the price. The most expensive equipment is not always the best value. Compare estimated annual production, warranty terms and the total installed price.
Are There Still Solar Incentives in 2026?
Some incentives remain available in 2026, but eligibility depends on your location.
The federal Residential Clean Energy Credit does not apply to qualifying residential clean-energy expenditures made after December 31, 2025. States, utilities and local governments may still offer:
- Rebates
- Performance-based incentives
- Solar renewable energy credits
- Property-tax exemptions
- Sales-tax exemptions
- Low-interest financing
- Utility battery rebates
Check with your state energy office and electric utility before signing a contract. Confirm the program's eligibility rules and expiration date instead of relying only on an installer's estimate.
How Can You Tell If a Solar Quote Is Reasonable?
Compare at least three written quotes using the same set of figures:
- Total cash price
- Price per watt
- System size in kilowatts
- Estimated annual electricity production
- Exact panel and inverter models
- Battery price listed separately
- Permit and interconnection charges
- Roof repair or electrical-panel upgrade costs
- Product, labor and roof-penetration warranties
- Total financing cost, including dealer fees and interest
The U.S. Department of Energy recommends comparing installers and converting quotes to a cost-per-watt figure. A low monthly payment can hide a high total project cost, so compare both the cash price and the full amount repaid.
Bottom Line
For many homes, $20,000 to $35,000 before local incentives is a reasonable starting budget. Smaller systems may cost less, while large homes, complex roofs and battery storage can push the total above $40,000.
Use your last 12 months of electricity bills when sizing the system, then compare three itemized quotes. Look for a clear price per watt, realistic production estimates, defined warranty coverage and separate charges for financing, roof work and electrical upgrades.