Solar panels and homeowners insurance: what the policy form says before you install

Who insures which part, by ownership

The first question is who owns the equipment and where it sits, because the answer routes the loss to a different policy. The table sorts the three common cases against what the HO-3 text says, and what a seller or lessor's paperwork must add.

What the standard policy text actually says

Coverage A covers "the dwelling on the residence premises shown in the Declarations, including structures attached to the dwelling." Panels fixed to the roof are attached to the dwelling in an ordinary reading, which is why insurers generally treat them as part of the house and not as personal property. Coverage B covers "other structures on the residence premises set apart from the dwelling by clear space," including structures connected only by a fence, utility line or similar connection, and its limit "will not be more than 10% of the limit of liability that applies to Coverage A." Use of Coverage B does not reduce the Coverage A limit.

Both coverages insure against "direct physical loss to property described in Coverages A and B," subject to exclusions. That is open-perils language: a loss is covered unless the form or an endorsement excludes it. The exclusions include flood and surface water, power failure that takes place off the residence premises, and neglect, which the form defines as failing to use reasonable means to save and preserve property at and after a loss. A hailstorm that cracks panels is not on the exclusion list in the form read, but a particular insurer's windstorm or hail deductible, or a roof-surfacing endorsement, can change the result, so the declarations page decides.

The form also gives an "Ordinance or Law" additional coverage: up to 10 percent of the Coverage A limit for the increased costs of complying with an ordinance or law that regulates construction, repair or demolition of a covered building after a covered loss. That matters for solar because rebuilding after a fire can mean installing to the current code, and the guide to roof setbacks shows how much that code can change the layout.

The 80 percent test, and how a solar system can tip it

Buildings under Coverage A or B are settled at replacement cost, without deduction for depreciation, but only if the amount of insurance on the building is at least 80 percent of its full replacement cost immediately before the loss. If it is lower, the form pays the greater of the actual cash value of the damaged part or the proportion of the repair cost that the limit bears to 80 percent of replacement cost, never more than the limit. The test counts replacement cost with the foundation supports and underground pipes and wiring left out.

A solar system adds to the building's replacement cost. If the dwelling limit does not rise with it, the test can flip from pass to fail. The table uses a home with a replacement cost of $400,000 before the system and $423,600 after a $23,600 array at the benchmark comparison line ($2.95 per watt DC on 8 kW, the U.S. Department of Energy's Q1 2025 residential benchmark in 2024 dollars, checked October 30, 2026), and shows what a $20,000 hail loss to the roof pays at four dwelling limits. The proportion shown is the form's second figure, and the form pays the greater of it and actual cash value.

The third row is the one to notice. A household whose limit passed comfortably before solar fails the test after it, and every later partial loss to the building, a kitchen fire or a roof leak as much as a panel loss, is prorated. The shortfall in the table is small on one claim and grows with the size of the loss. The fix is not complicated, and it is the reason to tell the insurer before installing: ask for the dwelling limit to be reviewed against the new replacement cost, in writing.

The question the form leaves open: replacement cost or actual cash value for panels

The same loss-settlement condition lists property that is settled at actual cash value, meaning replacement cost less depreciation: personal property; "awnings, carpeting, household appliances, outdoor antennas and outdoor equipment, whether or not attached to buildings"; structures that are not buildings; and grave markers. Buildings are settled at replacement cost under the 80 percent rule. The form does not say which side a rooftop solar array lands on.

Most insurers will treat it as part of the building, and that is the natural reading of Coverage A. But the clause means a claims adjuster has language available to call an array "outdoor equipment," and the difference is large. The table shows actual cash value of a $23,600 system if depreciated in a straight line over 25 years, which is an assumption chosen only to show the size of the gap; an insurer's schedule can differ.

The remedy is a sentence in the policy, not a legal argument after a loss: ask the insurer to confirm in writing that a permanently installed rooftop array is part of the dwelling and is settled under condition D.2, or ask for an endorsement that says so. If the answer is that it is outdoor equipment, you have learned the real price of the coverage before buying the system, which is the point of asking.

A claim shows how the two bases play out. Suppose eight of a system's 20 panels crack in a hailstorm, and repair is priced at their pro-rata share of the $23,600 installed price, $9,440, with an assumed deductible of $2,500. At replacement cost the insurer eventually owes $6,940, though the form pays no more than actual cash value until the repair or replacement is complete, so the balance arrives only after the work is done (a small-loss exception applies under 5 percent of the limit and $2,500). At actual cash value on the 25-year schedule the same repair is worth $7,552 if the system is five years old, so the payment is $5,052, and $5,664 if it is ten years old, so the payment is $3,164. The deductible is the same in all three; depreciation moves the cheque by up to $3,776.

The form's loss-of-use coverages, additional living expense, fair rental value and civil authority, cover the cost of living elsewhere or the rent a tenant would have paid. None of them mentions lost electricity production. A system that is down for a month produces no covered payment under the base form; on the 9,600 kWh a year used in this site's examples, an average month is about 800 kWh, which at an assumed 20 cents per kWh is $160 of power the household buys instead; real rates are on your bill, and how rate plans work is covered at EnergyBS. The amount is small next to the repair, but it is an uninsured cost that a net-metering household should know about, and the true-up that follows a bad production year is explained in the true-up guide.

Ground mounts and carports share a 10 percent limit

A ground-mounted array is not attached to the dwelling, so it falls under Coverage B, and the 10 percent cap is shared with every other detached structure on the property. On a $400,000 dwelling limit the cap is $40,000. A $23,600 ground array leaves $16,400 for a garage, shed and fence, which may not be enough if the garage alone is worth more. Because the cap is a share of Coverage A, raising the dwelling limit raises it automatically, which is one more reason to review the limit after the install.

Coverage B excludes structures rented to anyone who is not a tenant of the dwelling, and structures from which any business is conducted. A homeowner who sells the output of a ground array to a utility is selling electricity under net metering, not renting a structure, and nothing in the form reads on that point, so a household with a commercial arrangement should say so when it asks. The siting trade-offs are in the ground mount guide.

The headroom check is one line of arithmetic, and it is worth doing on paper before the install date. Take 10 percent of the Coverage A limit, subtract the replacement cost of everything already insured as other structures, and compare the remainder with the array's installed price. With that $40,000 cap, a detached garage valued at $22,000 and a shed at $5,000 use $27,000 of it, leaving $13,000, which a $23,600 array exceeds by $10,600. The remedy is either a higher dwelling limit, since each extra $10,000 on Coverage A adds $1,000 to the cap, or an endorsement the insurer is willing to write for the array, and either is better arranged before a hailstorm than after.

A rooftop carport or pergola that holds panels sits in the grey area between the two coverages. The form covers structures attached to the dwelling under Coverage A, and structures set apart from the dwelling by clear space under Coverage B, a category that includes structures connected to the dwelling only by a fence, utility line or similar connection. A freestanding carport roofed in panels is therefore an other structure, and a pergola bolted to the house wall is a question for the adjuster. Ask the insurer to classify the structure by name and write the answer down.

Leased panels: what the lease has to say about property risk

When the panels belong to a company, the company insures them, and the questions move to the lease or power purchase agreement. Fannie Mae's underwriting rules for homes with leased panels give a useful floor, because a lender will not accept an agreement that falls below it. The agreement must say that damage resulting from installation, malfunction, manufacturing defect or removal is the responsibility of the equipment owner, who must repair the damage and return the improvements to their original or prior condition. It must say that the owner of the panels agrees not to be named loss payee, or named insured, on the property owner's insurance policy covering the house, or the lender must verify that the owner is not. And it must say what happens in a foreclosure: the lender can end the agreement and require removal, take over as beneficiary without a transfer fee, or sign a new agreement on terms no less favorable.

Those three clauses answer the insurance questions a homeowner worries about most. Who pays when a mounting point leaks, who is entitled to the claim check when a storm damages both roof and panels, and what a buyer's lender will accept. A lease that lacks them is not necessarily bad, but it is below the standard a mortgage lender looks for, and the buyer's side of that question is worked through in the leased-solar sale guide. For the contract choice itself see lease, buy or PPA.

What to ask the insurer, and what answer should come back

Ask before the contract is signed, ask in writing, and keep the reply with the installation papers; if a battery is part of the job, name its location too, since a garage or basement unit has its own code conditions, set out in the guide to home battery location rules. Each question below maps to a clause above, so a vague answer can be tested against the form.

After a loss: the form's duties and clocks, applied to a panel claim

The form's Section I conditions put deadlines on the policyholder, and a solar claim has a few features that make them easier to miss. The first duty is prompt notice to the insurer or agent. The fourth is to protect the property from further damage, making reasonable and necessary repairs and keeping an accurate record of repair expenses. The Reasonable Repairs additional coverage pays the reasonable cost of necessary measures taken solely to protect covered property from further damage, but it does not increase the limit. For a hailstorm that cracks panels and breaks roof surfacing, the temporary repair may be a tarp over both, and the receipt belongs in the file.

The sworn proof of loss is due within 60 days after the insurer asks for it, and it must include specifications of damaged buildings and detailed repair estimates and state all liens on the property. A solar installer's invoice, the permit set, the as-built layout and the serial numbers are the documents that support the estimate. If a solar loan is secured by a filing against the home, the lien belongs in the proof of loss, a point that connects to the guide to solar loans and refinancing.

Two clocks follow. The insurer may repair or replace the damaged property itself if it gives written notice within 30 days after receiving the proof of loss. A loss becomes payable 60 days after the proof of loss is received and an agreement is reached, a judgment is entered or an appraisal award is filed. And under the suit-against-us condition, an action must be started within two years after the date of loss, with full compliance with the policy's terms; some states shorten or lengthen that by law, so the declarations decide. If a mortgagee is named, any Coverage A or B loss is paid to the mortgagee and the owner as their interests appear, so a large panel claim check can need the lender's endorsement before it can be cashed.

The detach-and-reset work that follows a roof loss is its own cost line, and whether it is part of the covered repair is a matter for the adjuster's estimate. The sequencing problem it creates is the subject of the replace-the-roof-first guide.

What the law says about insurers and solar

Readers often ask whether an insurer is allowed to cancel a policy because panels were added. This guide did not find a statute in the states checked that bars refusing, cancelling or surcharging for solar. California Insurance Code section 676.9, the one citation that came up for this claim, concerns domestic violence victims and does not mention solar, on the public mirror of the code read on October 23, 2026. The honest summary is that an insurer's rights on this are set by its filed underwriting rules and state law on non-renewal generally, and the way to learn them is to ask the insurer.

That is also why the order matters. A homeowner who installs first and asks later can find the policy not renewed at the next anniversary, with few places to turn. A homeowner who asks first learns the position while the contract can still be cancelled, and the sequence of steps in the installation process guide shows where that question belongs.