Rent Roof for Solar Panels: How a Business Leases Its Roof to a Solar Developer

Search for “rent roof for solar panels” and most of what comes back is the story of the 2010s home schemes. For a business with a large roof, such as a warehouse, factory, farm building or retail unit, the arrangement works differently. A solar developer takes a lease of the roof, pays for the system, owns and maintains it, and runs it for the term. In return your business gets a rent, cheaper electricity, or both. This guide explains how the deal is put together, who it suits, the lease terms and consents that matter, how tax and business rates fall, and how renting your roof compares with owning the panels. It is general information, not legal or tax advice.

How it works when you rent your roof for solar panels

Three parties usually meet on the roof. Your business is the host: the freeholder of the building, or a tenant whose lease lets it deal with the roof. The developer pays for the system and owns it, and may hold the project in its own company with outside funders behind it. An installer builds the system under contract to the developer, which then keeps it running for the term. The Department for Education’s description of the model on school roofs is a fair plain-English summary: a private sector provider “finances, installs, and maintains solar panels at no upfront cost”, and the school agrees to buy the electricity at a pre-agreed rate, usually lower than standard grid tariffs.

The paperwork normally comes in two parts.

• A lease of the roof. The developer takes a lease of the roof, or of the airspace just above it, with the rights it needs: access for installation and maintenance, routes for cables through your building, space for inverters and switchgear, and a connection into your electrical installation. A briefing note written by the Department for Education on school roofs takes the view that a provider with exclusive possession of the roof holds a tenancy, so “the appropriate document to use is a lease”.
• An agreement for the power, if you buy it. Where your business will use the electricity, the developer also signs an on-site power purchase agreement (PPA) with you, under which you pay an agreed rate for each unit. The Department for Education’s briefing assumes the same pairing on school sites: the landowner grants “a lease of its roof space to the provider” and enters into “a linked power purchase agreement or similar”. East Sussex County Council, for example, says it is required to sign a 25-year lease of a school roof with the provider, and the school signs a PPA alongside it.

Why a lease rather than a simple permission? A developer and its funders want a property right that survives a sale of your building and can be registered, and a lease gives them that. It matters for tax too: as explained below, a lease gives the developer an interest in your land, which is what lets it claim the capital allowances on the panels. Whether it is called roof rental solar, a rooftop solar lease or a deal to lease roof space for solar, it comes down to these two documents.

What the host gets back: rent, cheaper power or both

There is no public price list for roof space, because what a developer can afford to pay depends on what it can earn from your roof. An offer is built from one or more of three elements.

Where a rent is paid, how it is set is a matter for negotiation. It might be a fixed annual sum, an amount per kilowatt-peak installed, a share of the developer’s revenue, or a nominal sum where your return comes from cheaper electricity, and it may be fixed, stepped or linked to an inflation index. This guide found no official or industry benchmark for UK roof rents, so the practical test is comparison: ask several developers to bid for the same roof on the same terms, and ask each to show the system size, the annual generation, and the split between power you buy and power exported that its offer assumes.

The price of the power matters at least as much as the rent. When the Department for Education reviewed several school solar deals, its concerns included tariffs that rose every year with RPI, where “Increases are compounded year on year”, no protection if grid prices fell below the solar tariff, and the principle that schools should pay for “only the electricity consumed”, not for everything generated. The same questions apply to any business host. Compare the PPA price path with your own supply contract, not with a headline grid price.

Under the Smart Export Guarantee, generators are paid by their chosen supplier for the electricity they export; the scheme covers solar installations up to 5MW, MCS certification or an equivalent is required only up to 50kW, and each supplier sets its own rate and contract length. On a rented roof the developer owns the system, so expect it to keep any export income and to price that into your offer.

Expect the developer to look hard at your business as well as your roof. Where its income depends on you buying the power, your credit becomes a key risk for it. The government’s Solar Roadmap notes that it “can be challenging to secure finance for behind-the-meter solar installations if the end-user does not have a strong credit rating”, and that as a result commercial rooftop solar “tends to be restricted to major corporates”. A rent-only deal, where the power is sold elsewhere, leans less on your accounts and more on the grid connection. The checks are similar to the ones described in what lenders check before funding business solar.

Is your roof a good fit?

Large, simple roofs are the obvious candidates. The Solar Roadmap cites estimates that the largest 20% of UK warehouses alone offer 75 million square metres of roof, enough for around 15GW of solar. Whatever the building, a developer will test the same five things.

Roof condition and remaining life

The equipment is built to last: the Energy Saving Trust says panels “should last 25 years or more”, with inverters replaced after around 12 years. If the roof covering will need replacing before the lease ends, the panels must come off and go back on, so re-roof first or agree now who pays for that. The Department for Education will not approve school PPAs “where the roof condition is poor”, and its briefing on school deals raised concerns about the quality of roof surveys and asked whether existing roof guarantees had been considered. Ask your roofing contractor or manufacturer whether fixing panels will affect any guarantee you hold.

Structure

The roof has to carry the panels, their fixings and the wind loads on them. Expect the developer to commission a structural assessment, and ask for a copy: it is your building that carries the risk if the assessment is wrong.

Grid connection

The Energy Networks Association’s rule of thumb is that generation under 3.68kW per phase falls under Engineering Recommendation G98 and anything larger under G99, so a system big enough to interest a developer will be a G99 connection, with the application made to the local network operator. If the network cannot take the full export, an export limitation scheme under G100 can cap it. That shrinks a rent-only deal but matters less if you use most of the power on site. Where the system connects through your supply, your business may be the network operator’s customer, and the ENA notes that compliance falls on the customer, who is “quite often, but not always, the owner of the generation”. The lease should say who applies, who pays for any network works and who is responsible for compliance.

Tenure

You can only lease what you hold. A freeholder can grant a lease of the roof. A tenant needs a lease that includes the roof, enough unexpired term to outlast the solar lease, and its landlord’s consent (see below). If the building is mortgaged, the lender has a say too.

Daytime demand

A PPA-based offer is built around a host that will use most of the power in daylight for the whole term, such as a manufacturer, a cold store or a farm with daytime loads. A building with little daytime demand is more likely to be offered rent only. There are sector notes for warehouse and logistics buildings and farm buildings.

The lease terms that decide the deal

The lease will bind your building for a long time, so the detail matters more than the headline. The full heads of terms are set out in how long a commercial solar roof lease lasts and what it covers; the essentials are below.

Length of the term

No law sets the term. It is negotiated around how long the developer needs to recover its capital from the power and any rent, the working life of the panels, and the life of your roof. When the Department for Education reviewed several school deals, it called “A 20 to 25-year agreement” a long-term arrangement in which the school “is effectively locked into a long-term deal” while technology moves on. Those are public-sector examples, not a market rate: match the term to your plans for the building, and ask for break rights or an option to extend rather than a longer fixed term.

Registration at HM Land Registry

A lease granted out of a registered title for a term of more than seven years must be completed by registration, and until it is registered it “does not operate at law” (Land Registration Act 2002, section 27). A lease of more than seven years granted out of unregistered land triggers first registration, which must be applied for within two months. Once the lease is registered, the registrar must also enter a notice of it on your title (section 38), and an interest protected by a notice binds anyone who later buys the building. A lease of seven years or less is not registered but still binds a buyer as an overriding interest. Since 19 June 2006, a lease out of a registered title that must be registered has had to contain HM Land Registry’s prescribed clauses, and a roof lease needs a careful plan: the Registry says it “increasingly receives applications to register airspace, roof-space, tunnels and so on”, and that a plan is invariably required.

Security of tenure

If Part II of the Landlord and Tenant Act 1954 applies to the developer’s lease, the lease does not end at expiry unless it is terminated under the Act, and the tenant can apply to the court for a new tenancy. The parties can agree before the grant to exclude those provisions, but the agreement is void unless the statutory notice procedure is followed. The Department for Education expects school roof leases to be excluded from the security of tenure provisions. A business host has the same reason to ask for exclusion: it wants its roof back when the term ends.

Roof repairs and access

The Solar Roadmap notes that most commercial leases place repairing obligations on tenants, and identifies those “complex commercial lease agreements” as something that can hold back rooftop solar. In a roof lease you are the landlord, but the roof under the panels still needs maintaining, and the lease must say how. Agree how much notice you must give, who removes and refits the panels for repairs, who pays, whether you owe compensation for lost generation, and when and on what conditions the developer may come on site.

Insurance and indemnities

The lease should require the developer to insure its equipment and carry liability cover for its work on your roof, and your buildings insurer needs to know about the installation before it goes in. The developer should be responsible for damage it causes, and the lease should say who carries the risk if a fault in the system damages the building or interrupts your business.

Exit, default and the end of the term

Read the termination clauses as carefully as the rent. The Department for Education found schools “offered limited termination options”, where ending a deal meant the school “must buy the equipment or make a compensation payment”. At the end of the term its view is that the host should decide: if it does not want to keep the system, “the provider should remove it, meet the cost of doing so and make good any damage caused during removal”. Ask what happens if the developer sells the project or fails. Ofgem’s experience of home schemes is that installations were sometimes “sold between companies, especially when companies go out of business”, and the change was not always communicated to the homeowner.

Selling or refinancing your building

A registered roof lease passes with the building, so a buyer becomes the developer’s landlord. To shed your own landlord obligations, the Landlord and Tenant (Covenants) Act 1995 lets you apply for release by serving notice on the tenant before the sale or within four weeks of it. A PPA is a separate contract with your business, so check before signing whether it can be transferred to a buyer and what ending it early would cost. Expect the developer to want the right to assign the lease to its funders or to a buyer of the project; where the lease allows that only with your consent, the Landlord and Tenant Act 1927 implies that your consent is not to be unreasonably withheld.

Consents to line up before you sign

• Your mortgage lender. A borrower’s statutory power to grant leases of mortgaged land applies only so far as the mortgage deed does not exclude it (Law of Property Act 1925, section 99), so check your facility and charge documents and get the lender’s written consent before you sign.
• Your landlord, if you are a tenant. Check that your lease includes the roof, because in a building let in parts the landlord may keep it. If your lease allows underletting only with consent, the 1927 Act implies that consent is not to be unreasonably withheld, but you still need it, and the solar lease must end before your own lease does. If your landlord would rather deal with the developer directly, see whether a tenant can install solar panels and how a green lease can share the benefits.
• Planning. In England, solar panels on the roof of a building other than a home or a block of flats are usually permitted development under Class J of Part 14 of the General Permitted Development Order 2015. On a pitched roof the panels must not protrude more than 0.2 metres beyond the roof slope; on a flat roof their highest part must not be more than 1 metre above the highest part of the roof; and they must not be within 1 metre of the roof’s edge. The right does not cover listed buildings, buildings within a listed building’s curtilage or scheduled monuments. Systems above 50kW, beyond the legal definition of microgeneration, need a prior approval application to the council on design and external appearance, in particular glare, and work cannot start until the council responds or 56 days pass without a decision. The 1 megawatt cap that used to apply was removed from 21 December 2023, and panels installed under Class J must be removed as soon as reasonably practicable when no longer needed. A planning condition or an article 4 direction can take the right away, and Wales, Scotland and Northern Ireland have their own rules.
• Your insurer and the network operator. Tell your buildings insurer before work starts, and make sure the G99 application has gone to the network operator before anything is connected.

Tax and business rates when someone else owns the panels

The developer claims the capital allowances

HMRC normally regards solar panels as fixtures, and for fixtures the Capital Allowances Act 2001 decides who counts as the owner for tax. A person who incurs capital expenditure on plant for its qualifying activity, and has an interest in the land when the plant becomes a fixture, is treated as the owner (section 176). A lease counts as an interest in land (section 175); on HMRC’s reading, a licence counts only if it is exclusive. So a developer that pays for the panels and holds a lease of your roof can claim the allowances. Your business incurs no expenditure on the equipment, so it has nothing to claim: allowances are available only to a person who “incurs qualifying expenditure” (section 11).

That is value you hand over. Had you bought the system yourself, the panels would be special rate expenditure, and the Annual Investment Allowance, set at £1 million, could cover the cost up to that limit in the year of purchase. There is more on capital allowances for solar panels, and on who claims when panels are leased or supplied under a PPA.

The rent is taxable, and VAT may apply

Rent for your roof is income from land: HMRC’s property income guidance says a taxpayer should bring in “all rents and similar receipts from the exploitation of land or property in the UK”. Leasing land and buildings is normally exempt from VAT, but if you have opted to tax the building, supplies of your interest in it will normally be standard-rated, so the rent would carry VAT. Ask your accountant how the rent fits your tax position.

Business rates on the system

The Valuation Office Agency’s rating manual deals with this case directly. Where generating plant over 10kW produces power that is wholly or mainly for export, it “will normally constitute a separate hereditament”, and the VOA’s example is an energy company installing panels on a factory roof where “the factory owner receives rent and/or cheap electricity”. In the VOA’s flowchart, “grid” includes “a 3rd party host to whom the electricity is sold”, so power a developer sells to you counts as export. By contrast, the exception that runs until 1 April 2035 removes renewable plant from the rateable value where the power is consumed within the hereditament, which fits a system you own and use yourself. Expect a developer-owned system to be assessed separately, confirm the position with a rating surveyor, and make sure the lease puts any rates on the system with the developer. The owner-occupier position is covered under the business rates exemption for rooftop solar.

Accounting

FRS 102’s lease section was rewritten with effect from 1 January 2026, and a contract can in substance convey the right to control the use of an identified asset “even if the contract doesn’t have the legal form of a lease”. If you also buy the power, ask your accountant whether the PPA contains a lease of the panels. On your side, as landlord of the roof, the Financial Reporting Council says lessor accounting will in many cases not differ significantly from before. The operating lease guide covers the 2026 changes for lessees.

Why the home rent-a-roof schemes went wrong, and what is different for a business

The home schemes were built on the Feed-in Tariffs (FIT) scheme, introduced on 1 April 2010. Ofgem describes the usual rent-a-roof arrangement: a company installed panels on a house, the homeowner received the electricity generated, and the company, as owner, received the FIT generation and export payments, which ran for between 10 and 25 years depending on the installation. The homeowner signed an agreement such as a lease, renting the roof to the company.

The trouble came later. The lease sat on the title for as long as it ran, so every buyer of the house, and every buyer’s mortgage lender, had to accept a company’s rights over the roof for the rest of the term. Where a mortgage deed excluded the borrower’s statutory power to grant leases, the lender’s consent was needed in the first place, and a buyer’s lender that would not accept the lease terms could hold up a sale or a remortgage. The household’s only return was the electricity it used. Ofgem also notes that installations were sometimes sold between companies, especially when companies went out of business, without the homeowner being told. The FIT scheme closed to new applicants from 1 April 2019, so no new home scheme can be funded that way.

A commercial deal starts from a different place. The host is a business with its own solicitor, the value it receives is explicit (a rent, a unit price or both), and the developer’s funders need a properly drafted, registered lease. Commercial buildings are bought, sold and refinanced with leases in place, so a buyer’s solicitor and lender will expect to review a roof lease rather than be surprised by one. The core risks are the same, though: a long commitment on your title, a counterparty that may change or fail, and a roof that must be maintained under someone else’s equipment. Those are the points to negotiate.

Renting your roof compared with owning, a PPA or an operating lease

Renting the roof is one of several ways to get solar onto a building without paying for it up front. The fair comparison is the value of each route over the whole term, not the monthly figure.

Owning gives you the whole saving and the tax relief, but needs capital or borrowing capacity and leaves you with the operating risk; see buying outright, a business or green loan or hire purchase. Renting the roof hands the asset, the tax relief and the export income to the developer in exchange for no capital outlay, no operating risk and a rent or a discount. The finance options compared page lines the routes up side by side, and the no upfront cost guide explains how offers labelled “fully funded” resolve into one of them.

Questions to ask a developer before you sign

Put these to every developer in writing, and compare the answers side by side.

• Assumptions. The system size, annual generation and on-site use the offer assumes, and what happens to the rent or price if the network operator limits export.
• Price path. Whether the rent is fixed, stepped or indexed, how any PPA price changes each year, whether there is a cap, and what protection the host has if grid prices fall.
• Metering. Whether the host pays only for electricity it uses or for everything generated, and whether there is a minimum purchase.
• Term. The length, any break or extension rights, and whether the lease will be excluded from the Landlord and Tenant Act 1954.
• Roof. Who has surveyed the roof and structure, whether fixing panels affects the roof guarantee, and who pays to remove and refit the panels when the roof needs work.
• Cover. The developer’s insurance, the indemnities it will give, and the notice it will give before coming on site.
• Grid. Who makes the G99 application, who pays for any network works and who is responsible for compliance.
• Rates. Who pays any business rates assessed on the system.
• Exit. What it would cost to end the agreement early, or to buy the system.
• End of term. Whether the host can choose between removal at the developer’s cost with the roof made good, and taking the system over, and which warranties would transfer.
• Change of control. Whether the developer can assign the lease or sell the project without consent, and what happens to the host if the developer fails.
• Paperwork. Who registers the lease at HM Land Registry, and who pays the legal and registration costs.

If owning the system is a realistic alternative, a costed figure for the same roof gives you something to measure every offer against: request a costed quote, then set it against the rent and the power price on the table.