America's leading solar calculator tells you:

  • What size solar system you need
  • How much solar panels cost
  • What rebates are available
  • Your returns and payback period; and
  • The best solar installers in your area

Solar Reviews

Our partnership with
gives calculator users
the consumer rankings
of the installers
in their local area.

Originally developed and supported by

Originally developed and supported by US Department of Energy

Do you know the right Questions

to Ask solar companies?

Solar Estimator checklist
With our free solar installation checklist you will know all the right questions to ask an installer if you decide to speak to a solar company.

We provide this as a free bonus for users of the estimator.

Get our informed consumer checklist

America's leading online solar calculator as recommended by:

Yahoo Homes
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#1 solar calculator in Google

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The happiest customers

Rated the #1 America's leading online solar calculator by people just like you!

Highly recommend spending the time to enter your zipcode. The information provided is extremely helpful in choosing the right system. I was able to use 100% rebates against my system and now save every month!
Solar Testimonial

Darren Johns

Colorado, CO

This was the best decision we have made...
With the help of the Solar Estimator checklist, we were able to find a local installer, work out our rebates, choose the best payment plan.
It's so simple and quick.
Solar Testimonial

Olivia Edwards

California City, CA

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