How does a commercial solar lease work?

A commercial solar lease lets your business put a rooftop or ground-mount PV system to work without paying for it up front. A funder buys the equipment, you pay a fixed rental over an agreed term, and you keep every pound of the energy you generate and consume. It is one of several ways to fund commercial solar, and for some businesses it is the right one. But a lease behaves very differently from owning the system through hire purchase or an equipment loan, and the differences sit mostly in the tax and the balance sheet rather than on the roof.

This guide explains how a commercial solar lease works in practice: who owns the panels, the split between a finance lease and an operating lease, how the rentals are treated for tax, and what happens at the end of the term.

Who owns the system under a lease

Under any lease, the funder (the lessor) owns the equipment. Your business (the lessee) has the right to use it and takes all the operational benefit: lower grid imports, lower bills, and the export income if you generate more than you use.

That ownership point is where a commercial solar lease diverges from the other routes. With hire purchase or an equipment loan, title passes to your business, so you own the asset and claim the tax reliefs yourself. With a lease, the funder holds title for the term. It is closer to a long-term rental of the kit than a purchase by instalments.

Crucially, a lease is not the same as a Power Purchase Agreement. Under a PPA a third party owns the system and sells you the electricity it produces — you pay per unit, not a fixed rental, and the funder keeps the tax allowances and the export income. Under a lease you pay for the equipment, not the power, so you keep the savings and the export revenue. That is a meaningful distinction for any business comparing routes.

Finance lease vs operating lease

There are two kinds of commercial solar lease, and the label matters.

Finance lease

A finance lease transfers substantially all the risks and rewards of the asset to you. The rentals are structured to repay most or all of the equipment’s value over the primary term, and at the end you typically continue to enjoy the asset for a nominal “peppercorn” secondary rental, or share in the proceeds if it is sold.

Under a finance lease the lessor usually claims the capital allowances on the equipment and passes the benefit back to you through lower rentals. Solar PV is special-rate (integral-feature) expenditure, so those allowances are the Annual Investment Allowance at 100% on up to £1m a year, with a 50% first-year allowance on spend above that. Because the lessor claims them, you do not — but a well-priced finance lease reflects that benefit in the rental.

Operating lease

An operating lease is a true rental. The funder keeps the residual value risk, the term is usually shorter than the asset’s working life, and you hand the equipment back at the end. You claim no capital allowances under an operating lease, but the rentals are a deductible business expense in full, which can suit organisations that cannot use allowances efficiently — for example public bodies or businesses that are not paying tax.

The trade-off is straightforward: a finance lease is closer to ownership and tends to suit a profitable trading company, while an operating lease keeps you fully off the hook for the asset and suits a body that values the deductible rental over the allowances it cannot use.

How the tax works on a solar lease

Three points cover most of what a finance director needs.

Capital allowances. Under a lease, the lessor generally claims the allowances, not you. That is the central difference from owning. If keeping the allowances inside your own business matters — and for a profitable company it usually does — hire purchase, an equipment loan or cash purchase keeps them with you, because under those routes the business owns the asset. Our guide to capital allowances sets out the AIA and 50% first-year allowance in full, including why solar does not qualify for 100% full expensing (that relief is for main-rate plant only).

Rentals are deductible. Whether finance or operating, the lease rentals are an allowable expense against profits, spread across the term. For a non-taxpaying organisation this is academic; for a profitable one it softens the cost.

VAT. A VAT-registered business can reclaim the VAT on commercial solar regardless of route. The timing differs: with hire purchase or a loan you pay the VAT on the equipment up front and reclaim it, whereas a lease spreads the VAT across the rentals, so you recover it gradually as you pay. That can ease cash flow at the outset.

What a solar lease costs

Lease rentals are priced on the system size, the term, your business covenant and the funder’s residual assumptions, not on a single advertised rate. The honest test is not the headline figure but whether the energy saving plus any export income comfortably exceeds the rental. On a well-sited commercial roof with strong daytime demand, it often does from day one, which is what makes financed solar feel as though it pays for itself.

Match the term to the saving rather than the cheapest monthly figure. A longer term lowers the rental but raises the total cost of credit; a shorter term costs more each month but less overall.

End of term: what your options are

What happens at the end depends on the lease type. On a finance lease you commonly move to a low secondary “peppercorn” rental and keep using the system for years, or the equipment is sold and you take an agreed share of the proceeds. On an operating lease you usually return the equipment, extend, or upgrade to newer kit.

One accounting change worth flagging: revised FRS 102 brings most leases onto the lessee’s balance sheet for accounting periods beginning on or after 1 January 2026, recognising a right-of-use asset and a lease liability (short-term and low-value leases are exempt). The off-balance-sheet advantage that operating leases once offered is largely gone, so the choice between routes should now turn on tax efficiency and cash flow rather than balance-sheet optics. Speak to your accountant about how this affects your covenants.

Is a lease the right route for you?

A lease suits a business that wants fixed, predictable rentals, prefers to spread the VAT, and either values the deductible rental or cannot use capital allowances efficiently itself. A business that is profitable and wants to keep the allowances and the export income should look hard at owning instead, through hire purchase or an equipment loan, where the asset and the reliefs stay with the business from day one.

As an independent asset-finance brokerage we are not tied to a single funder or product. We model the lease against ownership in pounds, show you where the allowances and export income land under each, and arrange the structure that genuinely fits your tax position. For a no-obligation comparison of leasing against owning your system, request a quote and we will run the figures for your project.