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Independent solar math

Your roof.
Your bill.
Is solar worth it?

See what solar could cost, what it could save, and when it could pay for itself.

See my solar estimate
  • 5 quick questions
  • No email or phone
  • Free
Example home
Illustration of a home with blue solar panels, trees and a garden
8.2 kW system
$75$500
Bill reduction
$150/mo
System cost
$24,000
Payback
13.3 yrs

Illustration only. Assumes 60% bill reduction, capped at $180/mo. Before financing, incentives and maintenance. Your roof and utility change the result.

Your estimate comes first

See the numbers before you share contact details.

Assumptions in plain view

Every figure shows where it came from.

You decide what happens next

No account, no sales call to see results.

How it works

A clearer picture in three steps.

  1. 1
    Your home

    Start with your roof.

    Your address sets your sunshine, utility and local install prices. A few roof questions refine it.

  2. 2
    Your numbers

    See the whole equation.

    Estimated cost, production, bill savings and payback, with every assumption shown.

  3. 3
    Your choice

    Pick the next step.

    If it pencils out, we can introduce one installer for a written review. If it doesn't, we say so.

The honest part

Sometimes, your best move is no move.

Solar doesn’t suit every home. When it won’t pay off, your result says so instead of asking for a phone number.

How the estimates work →
  • Homes we tell to skip it
  • Your bill is under about $100 a month. Not enough spend to win back. Payback runs past a decade in most markets.

  • Big trees shade the roof. Midday shade can take a third of the production with it.

  • The roof is past twenty years old. Panels outlive shingles. Re-roof first, or pay to remove and reinstall later.

  • You rent. Community solar in your utility area is the version that works for you.

See your numbers before anyone asks for yours.

Five questions. Your estimate shows up on screen, not in a sales inbox.

See my solar estimate