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Solar Learning Lab

Solar, without the sales pitch

See what solar really saves on your home

Honest numbers from government data, installers graded on evidence, and a quick estimate of what panels would save on your monthly bill. Start with your zip code.

Free, takes about 2 minutes, and nobody shows up at your door. Or skip ahead and try the calculator.

New England home with rooftop solar panels in warm evening light
28.82¢Massachusetts rate per kWh, straight from EIA
A to FInstaller grades built from public records
$0Cost to you. Estimates are always free
100%Of our numbers link to their source

How it works

Three steps. No surprises.

1

Tell us about your home

Your monthly bill, your roof, and how you would want to pay. Four quick questions, nothing invasive.

2

See your savings range

An instant monthly estimate built from your state's real utility rates and sunshine data, not a national guess.

3

Choose who you work with

We install systems ourselves and partner with vetted local companies. You see the grades either way, and you pick.

The companies you pay now, side by side with solar

We publish this for every state we cover. Massachusetts is below; California, Texas, Florida, New York, and Arizona each carry their own tables on their state pages. The utilities file new supply rates on their own schedules. Solar you own locks its cost the day it goes on the roof. Same table, real filings, no adjectives.

Eversource logo

Eversource

17.3¢ per supply kWh

climbed about 11 percent in the latest filing

National Grid logo

National Grid

16.7¢ per supply kWh

climbed about 13 percent in the latest filing

Unitil logo

Unitil

16.2¢ per supply kWh

latest published schedule, new one pending

Panels you own

11 to 15¢ lifetime, our estimate

locked in on install day, no six month reset

Rates from DPU basic service filings, averages from EIA. Full sourcing and the complete side by side live on the Massachusetts page.

Why trust our numbers

We install solar. We also tell you when solar is a bad idea.

Most solar sites are lead brokers with a blog attached. We are a solar installer with a partner network, and we put that in writing on every page. Then we show our math so you can check it.

  • Every rate and incentive links to the government source it came from
  • Installer grades come from public records, and grades are never sold
  • The 2026 federal credit change is reflected in every number we publish
  • Your info goes only where you say it can go. No list selling