What does it cost to remove and reinstall solar panels for a new roof? A build from the DOE model's labour lines

Pricing the job from the benchmark model's labour lines

No federal agency publishes a price for removing and reinstalling an existing array. What the Department of Energy does publish, through the National Laboratory of the Rockies (formerly NREL), is the cost model behind its Q1 2025 benchmark of $2.95 per watt DC for a new 8 kW residential system. That model, the 2025Q1 PV System Cost Benchmark Model dated November 13, 2025, prices every task an installer performs: how many hours of racking and module work each square metre of panels takes, how many hours of wiring and commissioning each kilowatt of inverter capacity takes, and fixed amounts for site management, inspection support and permits. A reinstall repeats most of the installation fieldwork, and a removal is that work run in reverse. So the model's fieldwork lines are the closest attributable starting point anyone has.

The model's representative system is 20 modules of 400 watts, wired as two strings of 10, at a module efficiency of 0.204 kW per square metre, which makes about 39.2 square metres of panels. Its inverter load ratio of 1.14 gives about 7.02 kW of AC capacity. Labour figures include burden, meaning payroll taxes and benefits on top of wages, and are in 2024 dollars. The model states plainly that electrical service upgrades and roof repair are excluded from its fieldwork, which suits this exercise: the roofer's bill is a separate document.

Read the $1,955 as the model's cost of putting an array onto a prepared roof once. It does not include taking the array off, which the model never needed to price, and it does not include new flashing for the new roof covering, which a reinstall almost always needs because the old attachments were sealed to shingles that are about to go in a dumpster. Both are added in the next step, with each assumption printed.

A low case and a high case, with every assumption printed

Two inputs decide most of the spread. The first is how long removal takes compared with installation. Unbolting clamps and disconnecting connectors is quicker than laying out rails, but the crew still has to de-energise the system, label strings, carry every module down safely and stack it somewhere it will not be cracked or stepped on. We have no published figure for that ratio, so the low case assumes removal costs half the model's structural and electrical labour and the high case assumes it costs the same as installing. The second input is the permit. Some jurisdictions fold a same-layout reinstall into the reroof permit; others require a separate solar or electrical permit. The model's permit line, $2,152 for preparation plus the jurisdictional fee on a new system, is used as the high case and zero extra as the low case, which brackets the two treatments the permit section below documents: a reinstall folded into the reroof permit, or a separate solar or electrical permit. The model's figure is for a new-system application, and we found no published cost for a reinstall permit as such.

Several real costs sit outside both columns. Storage and handling risk is not in the model. Neither is a module broken in transit, a trip charge for the second visit weeks later, extra time on a steep or two-storey roof, a battery or gateway that must be disconnected and recommissioned, or any change to the equipment. The model also assumes an efficient installer working on its own design; a crew reinstalling another company's array, with unfamiliar racking and no original drawings, may not match the model's hours, while a crew that knows the racking on a simple roof can beat them. Treat the range as a modelled reference point, not a floor or a ceiling: real quotes can land on either side of it, depending on which of the lines listed here the installer includes and how the roof and crew compare with the model's assumptions.

What the build is good for is reading a quote. If a written figure lands near $0.50 to $0.95 per watt of the array, it is pricing the job the model describes. If it lands far above, ask which lines account for the gap: a separate permit, new rails, replacement modules, a steep-roof charge. If it lands far below, that can simply reflect an easy roof, lower local labour rates or a crew already on site for other work; check that the written scope still names the two items most easily left out, new flashing and the commissioning test that proves the array is producing again. We still print no national market price for this work, and nothing here changes the roof sequencing guide's position on that; a modelled build with its inputs shown is a different thing from a survey of what homeowners paid.

Who arranges the work and who pays: five ownership cases

The same physical job lands on very different desks depending on who owns the panels. Before calling anyone, find the contract and read the clauses on roof work, removal, maintenance and alterations. The Federal Trade Commission's homeowner guidance (April 2022) tells buyers comparing bids to ask what happens if the roof needs repair after installation, which is a sign of how often the answer is left vague. It also states that an owner is responsible for maintaining the panels and equipment unless the contract says otherwise, and that a leasing company will probably be responsible for maintenance.

Leases and PPAs: notice first, then their crew

A third-party owner has its own equipment on your roof, so it normally controls who touches it. The City of Gilroy, California puts that division into its permit paperwork. Its residential re-roofing policy (revised March 14, 2025) requires the homeowner to sign a clearance form stating whether the system is leased or owned. For leased systems, the form makes it the homeowner's responsibility to notify the leasing company and arrange the temporary removal, and says the leasing company must reinstall the modules in their original location. That is one city's rule, but it describes the usual order everywhere: tell the owner of the equipment before you book a roofer, get their removal fee and their schedule in writing, and make the roofing start date depend on their crew's date, not the other way round. The FTC guidance adds that at the end of a lease the company must remove the system and put the roof back in its original condition, which is a different event from a mid-contract removal; your lease should treat the two separately.

Check one more clause in a PPA. Your payments are for energy produced, so weeks with no production may mean smaller bills, but some contracts carry a minimum or a guaranteed-output term that is suspended or adjusted during customer-caused outages. The comparison of leases, purchases and PPAs explains how these contracts allocate production risk in the first place.

Owned systems whose installer is gone

When the original company has closed, the workmanship warranty usually closed with it, and the new contractor will be reluctant to warrant attachments it did not design. That makes the original permit set worth chasing: Santa Cruz County, California requires the original approved plans at the final electrical inspection and, where no copy exists, new plans matching the installation as originally approved. The guide to a solar company that has gone out of business covers how to find the manufacturer warranties and records that survive the installer.

Permits: four local rules that show how far practice ranges

There is no national rule on whether reinstalling the same array on a new roof is new solar work. It is decided by the local building department, and the four published policies below, read on October 30, 2026, show the range. Most share two ideas: the reinstall must match the originally approved layout, and any change to the system turns the job into new work with its own review.

Three practical points follow. Ask your building department for its reroof-with-solar handout before anyone quotes, because it decides whether the permit line in the cost build is zero or a real fee; Herriman, for example, lists its reroof permit fee at $119.18. Make sure the person removing the panels holds the licence your jurisdiction names, since a roofer doing it where that is not allowed can leave you with a failed final inspection. And keep the original permit drawings in hand, because several departments inspect the reinstall against them.

Tell the utility before the array comes down

The interconnection agreement you signed with the utility describes a specific system. Removing and putting back the same equipment does not normally change that description, but utilities ask to be told about work on the system, and some require approval for changes. Wisconsin Public Service's page for existing customer-owned systems is a clear example: it asks owners to notify it before any modification, says its approval may be required depending on the type and scale of the change, and states that if capacity changes, an updated interconnection agreement must be signed and approved before the change is made. It lists adding panels and upgrading an inverter as modifications that follow its interconnection procedures.

So a like-for-like reinstall is usually a notice, while a reinstall with extra panels or a new inverter can become an application. That distinction matters most for owners on an older export rule. A modification can be the event that moves a system from a grandfathered net metering arrangement to a current tariff, which the guide to keeping grandfathered net metering works through utility by utility. Call or write to the utility's distributed generation team, describe the work as removal and reinstallation of the existing approved system with no changes, and keep their reply with the permit file.

Choosing the month: what the weeks without production cost

From the moment the array is disconnected until it passes recommissioning, it produces nothing. Roofing schedules slip for weather, material delivery and the inspector's calendar, and the solar crew's return is a second appointment. The cost of that gap depends heavily on the season, because a rooftop array's output in its best month can be well over one and a half times its output in its worst.

To show the size of the effect we ran the NREL PVWatts calculator (version 8 API, run October 30, 2026) for an 8 kW system in Denver, Colorado: standard modules, fixed roof mount, 20 degree tilt, facing due south, 14 percent losses. It returned 12,760 kWh a year, ranging from 768 kWh in December to 1,277 kWh in June. Divided by the days in each month, that is about 24.8 kWh a day in December and 42.6 kWh a day in June.

The dollar column uses the U.S. Energy Information Administration's 2025 average residential price of 17.23 cents per kWh as a round illustration. Your figure depends on how your utility credits solar. Under retail net metering a lost kilowatt-hour is worth roughly the retail rate; under a net billing tariff the exported share is worth much less, so the loss is smaller. Rate questions themselves are covered in depth on EnergyBS's guide to utility rate plans.

In this example the difference between a June and a December removal is about $64 over three weeks, small next to the job's price. Season still matters for two other reasons. Winter roofing is slower in cold climates because shingles need warmth to seal, which can stretch the gap. And a summer leak that forces an emergency removal in the sunniest quarter is the costly version, so an owner who knows the roof is near its end gains by booking the work for a low month on purpose rather than waiting for it to fail. A roof-specific PVWatts run for your address, with your tilt and direction, will give your own monthly shape in a few minutes.

One household's numbers, start to finish

A household in Denver owns an 8 kW, 20-module array outright and needs a new roof after nine years. Its building department requires a separate electrical permit for the reinstall. Using the high-case build, the modelled proxy is about $7,415, roughly $371 per module. Booking the work for December instead of June, with a 21-day gap, cuts the modelled lost production from about 894 kWh to about 521 kWh; at the illustrative 17.23 cents per kWh, that is about $90 instead of $154.

Now suppose the installer's written quote is $9,800. Against the high case, the gap is about $2,385. That does not make the quote wrong, but it is the amount the installer should be able to explain line by line, for example a steep-roof charge, replacement rails, or storage off site. The roof itself is priced separately by the roofer. No federal tax credit appears anywhere in this arithmetic.

When a storm is the reason: the insurance side

If hail or wind damaged the roof, the replacement may be an insurance claim, and the removal and reinstall of the array is part of what it costs to repair the roof. Whether a policy pays it, and how much, turns on the policy's terms. The Maryland Insurance Administration's consumer advisory on roof replacement, which does not discuss solar, sets out the rules that decide most roof claims. Homeowners policies typically cover sudden and accidental losses from named perils such as wind, hail and the weight of ice or snow; wear, tear and deterioration are generally not paid; and if a covered peril damages a roof that already needed maintenance, the policy may not cover all of the claim. If only part of the roof is damaged, the policy may pay to repair only that part.

Two further points in the same advisory shape the cheque. Under replacement cost coverage, most policies hold back the depreciation until the repair is complete, so the full amount arrives only after the roof and, in practice, the array are back. Under actual cash value coverage the payment is the depreciated cost, which on an old roof can be far less. Some policies also carry a separate wind, hail or hurricane deductible written as a percentage of the dwelling limit; the advisory's own example shows a 2 percent hurricane deductible on a $100,000 dwelling limit becoming a $2,000 deductible. When you file, ask the adjuster in writing whether the estimate includes removing and reinstalling the solar array, and send the installer's written figure so it can be included. The guide to solar and homeowners insurance reads the standard policy form's dwelling and loss-settlement wording in detail.

Changes worth making while the panels are off, and the ones that make it a new project

The array is never easier to reach than when it is stacked in the driveway, so owners naturally ask what else to do. Sort the ideas by whether they change the approved system.

Work that leaves the approved design alone is usually simple to add: new flashing at every attachment, sealed to the new covering; replacement of damaged connectors or wire management found during removal; a cleaning of the module surfaces; and, where birds or squirrels have nested under the array, a mesh barrier around the array edge, which the crew can fit far more easily during the reinstall than later (the nest rules and the labour for that mesh are worked through in the guide to birds nesting under solar panels). Ask whether any of these change the permit; most departments treat them as part of a like-for-like reinstall, but confirm before assuming.

Work that changes the system turns the reinstall into new work. Gilroy's policy names a new layout, upgraded modules or inverter, and a service panel upgrade as modifications needing plans and a separate permit. Wisconsin Public Service names adding panels and upgrading an inverter as modifications that follow its interconnection procedures. That does not make them bad ideas. If the inverter is near the end of its expected life, doing its replacement while the crew is already on site can save a second visit, and the inverter replacement guide explains how to judge its remaining years. If you want more capacity, adding panels to an existing system sets out the inverter, busbar and utility checks. Just price and permit those jobs as what they are, and check the effect on your export arrangement before you approve them. If upgraded modules mean the old ones leave the property, where old solar panels can legally go depends on your state, and the removal contract should name the receiver.

One more change can arrive uninvited. Wheaton's policy anticipates that an original configuration may no longer meet the currently adopted code and requires the Building Official's written approval to reinstall it as it was. Ask your department directly whether a reinstall of your array, at its age, will be held to current electrical code, because that answer can add equipment the cost build above does not include.

The order of work, from first call to switch-on

1. Find the solar contract, warranties, original permit drawings and interconnection approval, and note how the system is owned.
2. If it is leased or under a PPA, notify the system owner in writing and get its removal and reinstall fee and earliest dates.
3. Ask the building department for its reroof-with-solar requirements: which permits, who may do the solar work, and what triggers a separate review.
4. Get a written removal and reinstall quote that names the new flashing, the permit, storage, recommissioning and the warranty on the work, and compare it with the model build above.
5. Notify the utility's distributed generation team that the existing approved system will be removed and reinstalled with no changes.
6. Book the roofer around the solar crew's dates, preferably in a low-production month, and agree who flashes the attachments.
7. Photograph the array, labels and wiring before removal, and confirm where the modules will be stored and whose insurance covers them there.
8. After the roof inspection, the solar crew reinstalls, recommissions and arranges the final inspection; ask for the commissioning readings.
9. Watch the monitoring for the next two weeks and compare daily output with the same weeks a year earlier.

Before the first shingle comes off

• Contract, warranties, original permit set and interconnection approval located.
• System owner notified in writing if leased or under a PPA.
• Local reroof-with-solar requirements in hand, including who may do the solar work.
• Written removal and reinstall quote with flashing, permit, storage, recommissioning and warranty lines.
• Utility notified that the approved system will be reinstalled unchanged.
• Any equipment change priced, permitted and checked against your export arrangement first.
• Insurance claim, if any, includes the array removal and reinstall line.