Finance Options
Solar Canopy Finance UK
You do not need capital to fund a solar canopy. PPA, asset finance and the Annual Investment Allowance can reduce or eliminate the upfront cost — and in many cases generate positive cash flow from month one.
Four routes to solar canopy finance
The right structure depends on whether you want to own the asset, preserve capital, or maximise tax efficiency. Most organisations use a combination.
Power Purchase Agreement (PPA)
Zero upfront costUnder a PPA, a third-party funder owns and operates the solar canopy on your site. You buy the electricity it generates at an agreed rate set in the contract. Term: commonly 15-25 years. At term end, you can purchase the system at market value, renew the PPA, or have the system removed. Cash flow is positive from month one: your electricity bill falls immediately with no capital outlay. PPA structures are off-balance-sheet under IFRS 16 for many organisations, though this depends on your accountant's treatment.
- No upfront capital
- Immediate bill savings
- No O&M responsibility
- Off-balance-sheet option
- − Lower long-term returns vs outright purchase
- − Contract commitment (15-25 yr)
- − You do not own the asset
Asset Finance / Commercial Loan
Own the assetAsset finance (hire purchase, finance lease, or unsecured commercial loan) allows you to spread the capital cost over 5-10 years. Monthly repayments are typically lower than the monthly electricity saving, creating positive cash flow throughout the loan term. You own the system outright at the end of a hire purchase or loan. Rates depend on the lender, your accounts and the project, so compare written quotations rather than a published average; we do not quote rates. Under hire purchase the business is treated as the owner for capital allowances (Capital Allowances Act 2001, section 67). AIA tax relief (see below) can make the after-tax cost of the first year substantially lower than the headline capital figure.
- You own the asset
- Cash-flow positive from month one
- AIA tax relief applies
- System equity builds over time
- − Higher long-term cost than outright
- − Loan on balance sheet
- − Credit approval required
Annual Investment Allowance (AIA)
Tax reliefA solar canopy purchased outright (or via hire purchase) qualifies for 100% first-year Annual Investment Allowance up to the £1 million AIA limit. This deducts the full capital cost from taxable profits in the year of installation. At the 25% corporation tax rate, a £500,000 solar canopy reduces your tax bill by £125,000 in year one — reducing the effective net cost to £375,000. Combined with a 5-year payback based on electricity savings, the after-tax payback can be under 3 years for profitable organisations. Ask the installer for the documentation your accountant needs for the AIA claim.
- Reduces effective capital cost by up to 25%
- Available in year of installation
- No cap on system size (up to £1M AIA)
- Combines with asset finance
- − Requires taxable profit to offset against
- − One-time relief (not annual)
- − Must be classified as plant & machinery
Grant funding: what is still open
Public sector / schoolsThe public grant landscape is much thinner than most canopy proposals suggest. The Public Sector Decarbonisation Scheme closed to new applications in November 2024 and no successor has been announced, and it was heat-led in any case — solar was fundable alongside replacing fossil-fuel heating, not as a standalone canopy grant. Nor is there a general interest-free Salix loan for English public bodies: Salix administered PSDS for DESNZ, which is a different thing. Scotland has SEELS and Wales has the Wales Funding Programme, which Salix lists as open but which lends at a fixed 2.45% (only its Invest to Save strand is interest-free). What is genuinely available to an English organisation is the business rates exception on generation plant to 31 March 2035, the Workplace Charging Scheme at GBP500 per socket to 31 March 2027, capital allowances for taxable businesses, and PPA or lease structures that move the capital elsewhere.
- Non-repayable where a scheme is still open
- Stackable with other finance
- − PSDS closed in November 2024 and there is no English Salix loan
- − Competitive and never certain
- − Application timelines add to programme
Finance structure comparison
| Structure | Upfront cost | You own asset? | 25yr total return | Best for |
|---|---|---|---|---|
| Outright purchase | Full capital | Yes (immediately) | Highest | Organisations with capital + high tax rate |
| Asset finance | Zero (monthly payments) | Yes (at end) | High | Preserving capital while building equity |
| PPA | Zero | No | Medium | No capital, immediate savings, no O&M |
Example: 200 kWp solar canopy financial model
A 200 kWp system on an 80-space car park. Based on UK average irradiance, 75% self-consumption, 25p/kWh avoided, 4p/kWh SEG export, and corporation tax at 25%.
Outright purchase
- Capital outlay
- £240,000
- AIA relief
- −£60,000 (yr 1 tax)
- Net cost
- £180,000
- Year 1 cash flow
- £47,500
- Payback
- 3.8 years
- IRR
- 28%
Asset finance (illustrative 7%, 7yr)
- Capital outlay
- £0 upfront
- AIA relief
- N/A
- Net cost
- £41,800/yr payments
- Year 1 cash flow
- +£5,700 (saving − payment)
- Payback
- 0 (positive from yr 1)
- IRR
- 22%
PPA (20p/kWh vs 25p grid)
- Capital outlay
- £0
- AIA relief
- N/A
- Net cost
- 0
- Year 1 cash flow
- +£9,500 immediate saving
- Payback
- Immediate
- IRR
- N/A (no cost)
Illustrative only: the figures for your site depend on its own costs, tariff and tax position.
Finance FAQs
A power purchase agreement (PPA) is a no-upfront-cost finance structure where a third-party provider owns the solar canopy and sells you the electricity it generates at an agreed rate, usually set below your current grid tariff. You pay nothing to install the canopy and benefit from lower electricity costs throughout the PPA term (typically 15-25 years). At term end, you can purchase the system, renew the PPA, or have it removed.
Not from the route most proposals cite. PSDS closed to new applications in November 2024 and no further window has been announced. There is no general interest-free Salix loan for English public bodies either. What remains: the business rates exception on generation plant to 31 March 2035, the Workplace Charging Scheme at GBP500 per socket where the canopy carries charging, capital allowances for taxable businesses, and a PPA or lease where capital is the constraint.
Yes. A solar canopy purchased outright qualifies for 100% first-year Annual Investment Allowance (AIA) up to the current £1 million AIA limit. This means the full capital cost can be deducted from taxable profits in the year of installation, reducing the after-tax cost of the system by up to 25% (at the 25% corporation tax rate). Ask the installer for the documentation your accountant needs for the AIA claim.
In principle a capital grant sits badly with a PPA, because the grant pays for an asset the third party would then own — but with PSDS closed to new applications since November 2024 the question rarely arises for a canopy. Capital allowances combine with any purchase structure, and the Workplace Charging Scheme contribution attaches to the chargepoints rather than the canopy, so it survives most funding structures. Check each specific scheme's own rules rather than assuming.
Under outright purchase or hire purchase (finance lease), the asset appears on your balance sheet as plant and machinery. Under an operating lease or PPA, the treatment depends on the specific contract terms and your accountant's judgement — IFRS 16 has tightened the criteria for off-balance-sheet treatment. Ask the provider for the contract documentation so your accountant can assess it. For most SMEs on FRS 102, PPA structures are treated as operating expenses.
Get an instant estimate for your site
The instant estimate on this page gives an indicative size, cost range and payback to compare outright purchase, asset finance and a PPA against. We reply by email.
Get an instant estimateInstant canopy estimate
Size and price your car park canopy in 30 seconds
Enter the number of parking spaces and your postcode and the page works out an indicative system size, capital cost range, annual generation and payback from the figures published on this site. It is an estimate, not a quote. Add your email afterwards if you want us to look at it with you; we reply by email.