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Compare lease, asset finance and cash routes alongside PPA on the commercial solar finance hub.
Solar PPA vs operating lease — accounting treatment under IFRS 16, monthly cost, exit flexibility. Which suits your business?
| Solar PPA | Operating lease | |
|---|---|---|
| Payment structure | Per-kWh generated | Fixed monthly amount |
| Performance risk | Provider | You (lease pays whether system works or not) |
| IFRS 16 treatment | Typically off-balance-sheet (service contract) | On-balance-sheet right-of-use asset |
| Term | 15-25 years | 5-15 years typical |
| Exit | Buy-out at FMV | Return to financier or buy at residual |
| Tax | Operating expense; deductible | Lease accounting |
| Tariff (per-kWh equivalent) | 11-16 p/kWh | 13-20 p/kWh |
PPA shifts performance risk to the provider; operating lease keeps you in control of the asset but exposes you to under-performance.
Solar PPA typically wins when (a) you need zero upfront capital, (b) you want operations and performance risk transferred, (c) your business horizon doesn't extend to a 25-year capital commitment, or (d) you want speed to deploy.
Operating lease typically wins when (a) you have capital and want the lowest 25-year cost, (b) you want to retain ownership of the asset and its long-term value, (c) you can manage operations in-house, or (d) you're constrained by structural reasons (e.g., procurement rules for public bodies).
PPA shifts performance risk to the provider; operating lease keeps you in control of the asset but exposes you to under-performance. Run your specific numbers in our PPA calculator before deciding.
Sometimes. SEG income always layers on top of either route. AIA / Full Expensing combine only with cash or self-finance. PPA + grant rarely stack — most grants exclude PPA structures.
Our mechanics hub covers 10 deep-dives on PPA structure, pricing, escalators, term, end-of-contract, off-taker covenant, EPC, O&M and M&V.
Our calculator runs both scenarios with your actual kWh, tariff and site assumptions.
Open calculatorCompare lease, asset finance and cash routes alongside PPA on the commercial solar finance hub.
If you'd rather own the system, check live UK grant and tax-relief options on the grants directory.
Vetted MCS-accredited installer partners on the commercial solar installation hub.