Solar Panel Cost Calculators
Asking what solar panels cost? Start with the Solar Panel Installation Cost Calculator below — it prices a full system by size, panel type and roof mounting, and it is the one to use for a total. The rest of these size it, project the savings, and work out the payback. All built for 2026 economics, after the federal residential solar credit ended.
What to expect from a home solar system
Estimates only. Actual cost and savings vary by location, roof, utility rates, and incentives. The 30% federal residential solar credit (IRC §25D) was terminated by the One Big Beautiful Bill Act (2025) and does not apply in 2026 — state, utility, SREC, and net-metering programs may still apply. Educational only, not tax advice.
Cost & Sizing
3Solar Panel Installation Cost Calculator
Start here for what solar panels cost. Full installed system price by size, panel type, and roof mounting
Solar Panel Size Calculator
Recommended system size, panel count, and roof area needed
Solar Panel Replacement Cost Calculator
Replace aging panels, an inverter, or a full system
Savings & Payback
4Solar Panel Savings Calculator
Monthly, annual, and 25-year savings from going solar
2026 Solar Payback Calculator
Post-credit economics — cash vs. loan vs. lease vs. PPA, with your state incentives and net metering tariff
Solar Panel Payback Period Calculator
How many years until your solar system pays for itself
Federal Solar Tax Credit Calculator
Check 2022–2025 residential eligibility, or a business §48E system