The cost to install solar panels depends on system size, roof work, equipment and local labor. Compare the cash price per watt for the same solar capacity and quote batteries separately. The IRS says the federal residential clean energy credit does not apply to property placed in service after December 31, 2025.
Cost to Install Solar Panels by System and Roof
Compare the system scope
Ask for DC system size, panel and inverter models, permits, monitoring, estimated production and warranties. Separate roof or electrical upgrades from the solar equipment.
Compare the system scope source


Check financing and incentives separately
Compare the cash price with the total of loan payments and ask about fees. Verify utility interconnection, export compensation and any local incentive directly.
Check financing and incentives separately source

Frequently Asked Questions
Should I subtract the federal credit from a new 2026 installation?
The IRS says the residential clean energy credit does not apply to property placed in service after December 31, 2025.
What should I compare before paying?
Ask for DC system size, panel and inverter models, permits, monitoring, estimated production and warranties. Separate roof or electrical upgrades from the solar equipment.