Solar

Preliminary cost estimates for residential solar projects.

14 tools · 14 guides

Tools in this category

Estimate the roof area needed to fit a set of solar panels.

Find the best tilt angle for solar panels by latitude and season.

Estimate how many years solar panels take to pay for themselves — with the free payback calculator.

Rough out what a solar system costs, how price per watt works, and why batteries and incentives change the final number.