About

SolarPayback is a small set of free solar payback and savings calculators. We built it after friends kept asking "will solar actually pay off for me?" and finding only lead forms that wanted their email before showing a number. Here the math runs entirely in your browser; nothing you type is uploaded or stored.

Our calculators are reviewed by a working solar consultant, Sarah L., for sensible defaults and plain-English explanations. We are not an installer and we do not sell systems — we just want the break-even math to be honest and free.