plugwatts

SMALL SOLAR. INFORMED DECISIONS.

Understand small solar.
Find your next step.

See how plug-in solar works, compare what it could be worth, and find options that fit your home.

See how plug-in solar works

Free to use · No email required · Starting with Maryland

Small solar panels mounted around balconies in Wesenberg, Germany
YOUR BEFORE-YOU-BUY FIELD GUIDE

Start with the home.
Then consider the hardware.

Independent decision support. Clear sources. Conditional answers. No kit sales.

START WHERE YOU ARE

Curious, comparing,
or ready to begin?

Choose the guide that matches your question. Our installation guidance begins with Maryland.

01

I’m new to small solar

See the parts, the energy flow, and what a small system can do.

02

Is it worth it for me?

Compare costs, useful energy, and the assumptions behind savings.

03

I’m preparing to install

Work through Maryland’s requirements and your utility’s next steps.

Renting? Compare solar options for your space and budget.

Comparing a kit? Use the buyer’s guide to compare configurations, costs and unresolved questions.

Balcony solar in Germany; this photograph does not verify a Maryland-compliant system. Photo: Robbie Morrison / Wikimedia Commons, CC BY 4.0. Resized.