Calculate Real Rooftop Solar Panel Payback & ROI — Free
Audit solar quotes, net-metering buyback rates, federal incentives, and inverter replacement reserves. The free tier is the whole tool: every field, every state, the state link and one complete un-watermarked run.
1 · Set the solar payback binder
FIRST-LOAD · sample record filed, free run untouched
Data note: Everything is computed in this browser tab. Nothing you type is uploaded, and nothing is stored on our servers.
2 · Read the designed solar payback binder
GratisAI audited my solar installer quote and revealed the true break-even payback year.
Boundary: Provides financial estimates based on user inputs. Utility rates and tax laws vary by state and year.
One-time layer · $5
The on-screen result is free and complete. The one-time layer adds a tangible file you keep.
- Printable solar payback binder report — Formatted ROI analysis sheet for contractor quote comparison — estimate: ~30 minutes saved
- Saved solar quote evaluations — Store multiple solar contractor quotes locally in browser — estimate: ~20 minutes saved
ONE-TIME STEP · the free run is complete; the printable copy and saved history are the one-time step
Reveal the printable layer →Yours to keep, right where you are. Your one-time purchase gently unlocks this app on this device and browser.