Solar Panel Cost Calculators
Free calculators — installation cost, energy savings, payback period, system size, and replacement. Built for 2026 economics, after the federal residential solar credit ended. Know your numbers before you go solar.
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
New solar system cost 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