How operating lease works for commercial solar
You pay a fixed monthly rental to use the system and the lessor keeps ownership; at the end of the term the asset is returned or the lease extended. Rentals are treated as revenue expenses and deducted through the profit and loss account. This was the classic off-balance-sheet route, but under IFRS 16 most leases now sit on the balance sheet and FRS 102 treatment is tightening, so off-balance-sheet status should be confirmed with your accountant rather than assumed.
Operating lease: use the system, hand it back at the end
An operating lease is one of the more straightforward ways to put commercial solar on your roof without buying it. You pay a fixed monthly rental for the right to use the system, and the funder, the lessor, keeps legal ownership from day one to the end of the term. When the agreement finishes you return the asset rather than owning it outright. That single fact, that the kit is never yours, shapes everything about how this route fits, who it suits, and how it is treated for tax.
How it works in practice
The lessor buys and owns the solar array. You sign an agreement to use it for an agreed period, typically 5 to 15 years, in exchange for a fixed monthly rental. Because the payment is set at the start, your cost is predictable and easy to budget against, and there is no large capital outlay to find up front. The generation and the savings on your electricity bill start immediately, while the rental is spread across the term.
At the end of the lease the standard outcome is that the equipment goes back to the lessor. Some agreements allow you to extend for a secondary period, often at a reduced rental, or to arrange for the system to be removed. Because you do not own the asset, you also do not carry it on your books as a purchase in the traditional sense, although the accounting treatment has changed in recent years, which we cover below. This structure sits close to an asset finance arrangement, but the defining difference is that ownership never transfers to you, which is what separates it from hire purchase.
Who it suits, and who it does not
An operating lease tends to suit businesses that value certainty of cost and want to avoid tying up capital, and that are comfortable never owning the equipment. It can appeal where you would rather keep your cash for core operations, or where you expect to move premises within the term and do not want to be left holding a large fixed asset. It is also worth considering if your organisation has limited ability to use capital allowances, because in that case the tax advantages of owning outright are less valuable to you anyway.
It suits you less well if your priority is the lowest possible lifetime cost, or if you want to keep the system for its full 25 to 30 year working life and enjoy free power once it is paid off. Over the long run an operating lease usually costs more in total than owning, because you are paying the lessor for the use of their capital and taking none of the residual value. If ownership and the strongest tax position matter to you, compare this against a straight capital purchase before deciding.
The tax and accounting angle
Under an operating lease the capital allowances accrue to the lessor, not to you, because they own the asset. What you get instead is that your rental payments are treated as revenue expenses and are fully deductible against your taxable profits over the life of the lease. For some businesses that steady deduction is perfectly acceptable, but it is a genuinely different position from owning.
It helps to know what you would be giving up. Commercial solar PV is special rate plant, so if you bought it outright it would not qualify for 100% full expensing or the 40% first-year allowance, both of which are main-rate only. Owned solar does qualify for the Annual Investment Allowance, which gives 100% first-year relief up to £1m and covers most installations, and above that cap companies can claim the 50% special-rate first-year allowance, with the remaining balance written down at 6% a year. On a lease, none of that reaches you; it stays with the lessor.
On accounting treatment, an operating lease was historically the classic off-balance-sheet route. That is no longer a safe assumption. Under IFRS 16 most leases now go on the balance sheet as a right-of-use asset and a lease liability, and FRS 102 is tightening in the same direction. The off-balance-sheet benefit that once made this structure attractive has largely gone for many businesses, so confirm the treatment that applies to you before you rely on it.
VAT on commercial solar is charged at 20% and is reclaimable by VAT-registered businesses; the 0% domestic rate does not apply to commercial installations. Rooftop solar for self-consumption is 100% exempt from business rates in England from April 2022 to March 2035. Any power you export can earn income under the Smart Export Guarantee, which replaced the Feed-in Tariff and covers systems up to 5 MW. This is general information, not tax or accounting advice, and treatment depends on your circumstances, so confirm the detail with your accountant.
What to watch for
Read the end-of-term position carefully, including who pays to remove or make good the roof, and whether you have a right to extend. Check what happens if you relocate or want to exit early, as break costs can be significant. Because you never own the system, model the full lifetime cost against ownership rather than comparing monthly figures alone; the lowest monthly rental is not always the cheapest route once the whole term is added up. Our finance calculator and payback and ROI pages help you put real numbers around that comparison.
See how it compares on a costed quote
The right answer depends on your cash position, your tax profile, and how long you plan to keep the system. We are a comparison and quote service, not a lender or financial adviser, and we connect you with vetted MCS-certified installers and funders so you can weigh an operating lease against every other route on like-for-like numbers. Compare the routes side by side on our finance options compared page, then get costed figures for your building by requesting a quote.
Pros
- No or low capital cost
- Payments fully expensed through the P&L
- Potentially off balance sheet under FRS 102
- Predictable fixed cost
Trade-offs
- You never own the asset
- No capital allowances, the lessor keeps them
- No residual value to you
- Total lifetime cost usually higher than owning
Not sure this is the right route? Compare every funding route side by side, or read the deeper explainer on commercial solar finance options.