What Does Home Solar Cost in 2026?
Summary
About $2.60 per watt on average, according to EnergySage's 2026 marketplace data, or $31,135 for the 12 kW system a typical home needs. Both figures are before incentives. State averages run from $2.12 per watt in Florida to $3.84 in Alabama, and the 30% federal residential credit no longer applies to systems installed in 2026.
The spread around $31,135
EnergySage's 12 kW figures run from $27,526 on the low end to $33,869 on the high end. The company attributes most of the difference to system size, roof and home characteristics, and location, along with the equipment and installer you pick. Shading, roof complexity, and local incentive programs also move the final number.
Cheapest and priciest states
In EnergySage's state table, last updated September 11, 2026, Florida ($2.12 per watt), Texas ($2.25), and Arizona ($2.28) have the lowest averages. Alabama ($3.84), Tennessee ($3.52), and Hawaii ($3.43) have the highest.
The federal credit ended with 2025
The IRS says the Residential Clean Energy Credit under Section 25D is not allowed for expenditures made after December 31, 2025. An expenditure counts as made when the original installation is completed, so paying in 2025 doesn't help if the installation finished in 2026. For property placed in service from 2022 through 2025, the credit rate was 30%.
Sources
- EnergySage — Solar Panel Cost in 2026 (updated June 30, 2026)
- Internal Revenue Service — Instructions for Form 5695 (2025)
- Internal Revenue Service — FS-2025-05, FAQs for modification of sections 25C, 25D, 25E, 30C, 30D, 45L, 45W, and 179D
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