Last Updated: May 2026
TL;DR: The average residential solar installation in 2026 runs $18,000 to $26,000 before incentives. The federal solar tax credit covers 30 percent. State and local incentives can knock another 10 to 25 percent off the cost. Real out-of-pocket cost for most homeowners: $10,000 to $17,500 with a 7 to 10 year payback.
The Federal Residential Clean Energy Credit covers 30 percent of the total installed cost of a residential solar system. The credit is available through 2032, then steps down to 26 percent in 2033 and 22 percent in 2034. You claim it via IRS Form 5695 when filing your federal tax return.
This is a tax credit, not a deduction - it reduces your tax bill dollar-for-dollar. You need enough federal tax liability to use it. If your credit exceeds your tax liability in one year, the unused portion rolls forward to future years until used.
The 30 percent credit applies to: solar panels, inverters, mounting hardware, wiring, batteries (any battery storage of at least 3 kWh capacity), labor for installation, permitting fees, and sales tax on equipment. It does not cover: roofing repairs needed before installation (unless integrated solar shingles), utility connection fees, or maintenance contracts.
According to the U.S. Department of Energy, every state has at least some solar incentive available. The major ones to look for:
The DSIRE database tracks every state and local solar incentive available.
Net metering is the policy that lets your utility credit you for electricity your solar system sends back to the grid. The rules vary dramatically by state and utility. California shifted to NEM 3.0 (net billing) in 2023, reducing the credit value significantly. Other states still offer full retail-rate net metering. Before installing solar, confirm your utility's current net metering or net billing policy because it dramatically affects payback period.
Payback period (years to recover your investment through energy savings) depends on: your local electricity rate, your annual electricity usage, your roof orientation and shading, the net metering policy in your area, and any state or local incentives stacked on the federal credit. Typical payback:
Battery storage adds $10,000 to $20,000 to the installation. With the federal credit it nets to $7,000 to $14,000. Worth it primarily for homeowners in areas with frequent outages, time-of-use electricity rates that penalize evening usage, or states where net metering has been reduced. For most homeowners with traditional net metering and a reliable grid, batteries push the payback period out by 3 to 5 years.
Use the Vanderflip solar cost calculator to see real 2026 installation costs in your state, the value of the federal credit for your system size, available state incentives, and your estimated payback period.
This article is for informational purposes only and does not constitute professional contracting, financial, or legal advice. Cost data is sourced from publicly available industry reports and updated as market conditions change. Always obtain multiple quotes from licensed contractors before making a decision.