Finance route · Updated May 2026

Operating lease for commercial solar in 2026

An operating lease is the off-balance-sheet finance route for commercial solar — fixed monthly payments, lease cost treated as revenue expense, no capex on your books. Here's when it makes sense, when it doesn't, and how it compares to PPA and asset finance.

What is a commercial solar operating lease?

Operating lease is a generic finance product — most commonly used for vehicles, IT equipment and plant. The solar version works the same way. A specialist solar finance company purchases your solar PV system and leases it to you for 5-10 years at a fixed monthly rent. You're responsible for using the electricity (whether self-consumed or exported); the financier is responsible for the asset.

The differentiator vs a PPA is that under an operating lease you keep all the energy savings. Under a PPA, the savings are split — you save on grid imports but pay a per-kWh rate to the PPA provider. Operating leases preserve all the upside if energy prices rise or your usage grows — but you carry the risk of underperformance more than you would under a PPA.

When operating leases make sense

• You want to preserve capex headroom for higher-IRR business uses
• You don't have the tax position to benefit from AIA or Full Expensing (e.g. loss-making or recently incorporated)
• You want full upside on energy price inflation (operating lease pays fixed; you save more if grid rates rise)
• The system is moderate-sized (50-300 kWp) — too small for a competitive PPA, too big for hire purchase
• Your CFO prefers operating expenses to capital expenditure in management accounts

Typical UK 2026 terms

Term	Typical range
Lease length	5-10 years (typical 7)
Implicit interest rate	6.5-9.5% (2026)
Monthly payment	1.3-2.0% of system cost per month
Maintenance responsibility	Variable — confirm in lease
End-of-term purchase price	5-15% of original cost (or peppercorn renewal)

Operating lease vs asset finance / hire purchase

Hire purchase and asset finance treat you as the buyer — you can claim AIA / Full Expensing on day one. Operating lease treats the financier as the buyer — they claim the capital allowances, and you claim the lease payment as a revenue expense. For tax-paying limited companies, asset finance + Full Expensing usually delivers a better post-tax outcome than operating lease, because the year-one tax saving on a £100k system is £25,000 — equivalent to 6-9 months of operating lease payments.

For loss-making businesses, recently-incorporated companies, or businesses without sufficient profits to absorb the tax relief, operating lease can be the better choice — it spreads the cost as a regular operating expense regardless of profitability.

FAQs

Operating lease FAQs

What is a commercial solar operating lease?

An operating lease is a finance arrangement where a financier purchases and owns the solar system, leasing it to you for a fixed monthly payment over typically 5-10 years. You don't own the asset; the asset isn't on your balance sheet; the lease payment is treated as a revenue (operating) expense rather than a capital expenditure.

How does operating lease compare to a PPA?

An operating lease has you paying a fixed monthly amount regardless of how much electricity the system generates. A PPA has you paying per-kWh of generation. Operating leases are typically shorter (5-10 years) than PPAs (15-25 years). Operating leases give you full benefit of self-consumption savings; PPAs share the savings with the provider.

Is the lease payment tax-deductible?

Yes — operating lease payments are typically fully tax-deductible as revenue (operating) expenses. The financier (who owns the asset) claims capital allowances on the equipment. You cannot claim AIA or Full Expensing on a leased asset.

What happens at the end of the lease?

Typical end-of-term options: (1) return the system to the financier; (2) purchase the system at fair market value (typically 5-15% of original cost); (3) renew the lease at a peppercorn rate. Most operating leases include an option to purchase, though it's not contractually guaranteed under IFRS 16 / FRS 102.

How does it affect my balance sheet?

Under IFRS 16 (large companies) and FRS 102 Section 20 (most UK SMEs), operating leases with terms over 12 months may need to be capitalised — recognising a 'right-of-use' asset and corresponding lease liability. The historical 'fully off-balance-sheet' treatment no longer applies to most large or medium-sized companies. Discuss with your auditor before structuring.