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Tilt & Silicon Survey
Rows of dark solar panels at blue hour, with a technician in a high-visibility jacket walking between them

Is a home ready for solar, or is community solar the better fit?

A home inspector's view of the roof, the panels and the wiring, written for buyers, sellers and homeowners who have a report in hand. The readiness check starts from the questions an inspector would ask anyway.

Run the readiness check

Start with the roof you already have

Most people who look into solar begin with the sun. The question that usually decides the outcome is the building under the panels. Does the roof have the age and the covering to carry an array for the years it is meant to run? Does the electrical panel have room for another source of power? Would the wiring behind it pass a careful look? These are the questions a home inspection is built to answer, and they come before any question about panel brands or payback.

This site is written by a home inspection practice. We walk roofs, panels and wiring for buyers, sellers and homeowners. We write up what we find in plain terms, with the reasons set next to each finding. Solar comes up in that work, and the readers who ask about it want a straight answer before they talk to anyone who sells panels. Our aim here is to give them the checks that let them judge a proposal for themselves. We do not sell panels, and nothing on this site is a quote.

Two decisions come in order. First, is the home ready for rooftop solar at all? Second, if it is not, or if the home is rented or heavily shaded, does a shared community solar subscription fit better? Commercial buildings raise the same questions with bigger roofs and longer contracts. A reader with a commercial roof can compare options first on the company's page about commercial solar energy. The sections below take each question in turn, so the reader can stop at the point where the answer is already clear.

What a solar decision covers, item by item

Rooftop solar on a home

A rooftop array is the usual answer when the roof faces the sun, is in sound condition and the electrical panel has room for the added load. The first check is the roof itself: its age, its covering, the shading across the day and the fixings that hold the frame. The wiring and the panel come next, because a roof that passes can still fail at the meter. Ask for the inspection before the design, not after it. A written list of what was checked is worth more than a verbal promise about it.

Community solar subscriptions

A subscription takes a share of a shared array and credits its output to a bill. It suits renters, shaded roofs and homes that cannot carry panels at all. Read the terms before signing, because the length of the contract and the fees decide what a household actually pays. Ask what happens to the subscription if you sell the house or move out of it. Keep a copy of every term you were shown, since the sales conversation is the least reliable record of what was agreed.

Commercial solar on a building

A commercial roof is larger and the contracts run longer. The questions shift from whether the structure can take the load to who owns the array, who maintains it and what the building owner agrees to for the life of the arrangement. Insurance and roof warranties need to be read together with the array contract, not on their own. A roof that is close to the end of its covering life should be assessed or replaced before panels go on it. Those steps cost less when they come first.

Incentives and paperwork

Federal, state and utility incentives change, and they are the part of any quote most likely to be out of date. Check your state's current program yourself before relying on any figure, including one printed in a sales document. Ask which incentive a quote assumes and when that incentive was last confirmed. A quote that cannot answer those two questions is one to set aside until it can. The paperwork for each incentive should be on file before the installation date.

How a panel array is fixed to a roof

A short clip shows an installer fixing solar panels to a farm shed roof. It is worth watching for the fixings and for the way the frame sits on the covering. Those are the same points an inspector looks at afterwards, when a roof has been disturbed by new work. The clip is an example of the work and does not stand in for a check of any particular roof. Watch the fixings, the flashing around them and the gap between the frame and the surface beneath it.

Pages that answer the next question

The scale of what this site covers

The page count comes from this site's own navigation. Nothing else on this page is a measured figure, and no savings or cost figure is printed anywhere on the site.

Rooftop or shared: how the two answers differ

Rooftop solar gives the owner the array and its output. It also asks the roof to carry the array for as long as the system runs. A community solar subscription asks less of the building and more of the contract. The terms decide what a household pays, how the credits are applied and what happens when the household moves. Set the two side by side before deciding, and take the time to read both sets of terms in full.

Where a roof cannot take panels, a community solar subscription is one route to check before deciding. Subscriptions are often sold on the promise of a lower bill, so the fine print is the part to read most closely. Ask for the terms in writing and check them against the bill you already pay. Compare the credit against the fees line by line, not against the headline figure. A reader who keeps the written terms can judge the offer long after the sales call has ended.

Wind turbines standing on a grassy hill at sunset
A report that says nothing about the roof and the wiring has not answered the solar question yet, so we check both before anyone talks about panels.
Tilt & Silicon Survey

Other places to check a claim

Nothing on this site replaces a proposal read line by line. Nor does it replace the company's own account of its work, which a reader should ask for in writing. Three places are worth the time before any decision is made. Field Notes and Outcomes set out what an inspector sees and what a reader can end up with after an inspection and a solar decision. The list below points at each place in turn, so a reader can choose the one that matches the question in hand.

Ask the question before the proposal arrives

A proposal is easier to judge once the roof, the panel and the wiring have been looked at. Checking them is the part this site does. The sale is a separate step, handled by whoever quotes the work. Keep the two apart in your mind when a salesperson moves quickly toward a signature. A reader who is still unsure can take the report to a second look before deciding anything at all.

A reader who wants a solar energy company to look at can start with Renewables Worldwide, which Google lists as a solar energy company. Its Google listing shows the rating and the reviews for anyone to check. Check the reviews, ask the company which of the work above it does, and ask for the terms in writing. The listing is a starting point for those questions, not an answer to them. A reader who gets clear answers has learned more than any page on this site could tell them.

See what Renewables Worldwide offers

When the inspection report points at the roof and the solar question comes next

A report that flags an older roof often leads to the solar question before any re-roofing is settled. Google lists Renewables Worldwide, Inc. as a solar energy company in Andover, Massachusetts. The listing shows a rating of 5.0 from 2 reviews and gives the phone number as (800) 480-4751. This site points readers to them because that listing can be checked line by line. Two reviews is a small sample, so read them yourself before you decide.

Renewables Worldwide, Inc. on Google

Tell us which page of the report worries you, and what you want to know about the roof, the panel or the bill. The Ask A Question page is the only route to the owner, so start there. Say which page of the report it is and what it says, because that is what we can answer from.

Ask a solar readiness question