Solar, explained clearly.

Understand solar costs, incentives, financing, savings, and equipment before making a decision about your home.

Clear explanations • Practical numbers • Built for homeowners

Understand solar before you buy

Make sense of your solar options

Get the information you need before comparing quotes or signing a solar contract.

Learn how usage, rates, roof conditions, system size, and financing shape the numbers.

See how federal, state, and utility incentives can affect the cost of solar.

Understand the tradeoffs between cash, loans, leases, PPAs, equipment, and ownership.

Use the calculator to see how your electricity use and expected solar production could affect your costs.

Featured State Guide

See Massachusetts solar costs, incentives, net metering, financing, and what makes a home a good fit for solar.

Solar guides

Start with the topic you care about, then use a state guide for local rules and incentives.

How $/W, system size, batteries, roof adders, and financing affect a quote.

How federal tax rules, state programs, utility value, and ownership interact.

Understand imports, exports, bill credits, and the basic electricity flow.

Answer a few questions about your home to see what solar options may fit.