Tools
No accounts · nothing leaves your browser · every formula is public
The tools we wish installers' own websites had. Built for the moment you have quotes on a table and a rep watching you sign.
Quote scorecard
Enter up to three installer quotes. It computes $/W, compares them against the 2026 U.S. market, and shows which one is the honest best value.
Tool 02 — PaperBuyer checklist
Sixteen numbered questions and numbers — the ones installers' contracts leave implied. Print it, carry it, tick it off.
Tool 03 — MathPayback estimator
Bill, rate, quote — annual production, savings and simple payback in ten seconds. On every state page, assumptions disclosed.
Tool 04 — SunSun look-up
Type a ZIP code — get the measured 2024 daily sunshine for that state and a 12-month curve, with a rough roof-production model on top.
Tool 05 — FitIs solar right for me?
Ten questions, one scored verdict — the 60-second first-pass before you call an installer.
Tool 06 — CreditsSREC income calculator
Certificate markets (SREC/TREC, SMART, Shines) by state — size your system, type today's price, see the 10-year income math. In review, honestly labelled.