What to expect, checked 3 November 2026: a car park canopy is very rarely paid for by a grant. In England there is no national capital grant for one: the Public Sector Decarbonisation Scheme closed to new applications in November 2024 and the Industrial Energy Transformation Fund is closed. Scotland’s SME Loan is not taking solar PV, Wales’s Ynni Cymru grant closed on 21 May 2026, and Power NI’s NISEP-funded grant for business solar PV (20%, capped at £30,000) has closed for applications for 2026/27; Power NI expects the next round to open in April 2027, subject to funding approval. Build the case on capital allowances and your own funds, finance or a PPA, and treat any grant as a bonus. The routes that genuinely exist are below, with what has closed.
1. Capital allowances: the Annual Investment Allowance first
What it is: the Annual Investment Allowance (AIA) lets a business deduct qualifying plant and machinery from taxable profits in the period it is bought. Solar PV is special-rate plant (Capital Allowances Act 2001, section 104A), so it is covered first by the £1m AIA, then by the 50% special-rate first-year allowance, then by 6% writing-down allowances. It is not full expensing.
Effective benefit: at the 25% main rate of corporation tax, claiming the AIA on a £200,000 canopy reduces the tax bill by about £50,000 in year one for a profitable company. It is a tax relief, not a grant, and it only has value against taxable profits.
Important notes:
- Unincorporated businesses claim capital allowances against income tax at their own rates, so the value per pound differs.
- The relief falls in the period the expenditure is incurred and the asset is brought into use, so commissioning dates matter at a year end.
- Under hire purchase the business is treated as the owner for capital allowances (section 67), so the relief stays with it. Our guide to whether solar carports qualify for capital allowances covers the canopy steel as well as the panels.
2. Smart Export Guarantee (SEG)
What it is: larger licensed electricity suppliers must offer an export tariff to eligible generators up to 5 MW. SEG applies in Great Britain only: a canopy in Northern Ireland is paid for export on its supplier’s own terms.
Rate: set by each supplier and above zero by law; rates change often, so compare current offers rather than relying on a figure in a guide.
Value: for a 200 kWp canopy using 85% of its power on site, roughly 30,000 kWh a year is exported. At 12p a unit that is about £3,600 a year: modest next to the value of the power used on site.
3. Local and devolved routes
English combined authorities and councils: some have run business decarbonisation grants in the past, but none is a national canopy scheme, budgets open and close quickly, and none could be confirmed as open on its own page when this guide was checked. Ask your combined authority or council directly, and do not put a grant percentage into a business case until you have it in writing.
Wales: the Development Bank of Wales Green Business Loan Scheme names solar PV among its eligible measures, with loans of £1,000 to £1.5m over up to 15 years (Senedd written answer WQ96151). It is a loan, not a grant. Ynni Cymru, the Welsh Government capital grant, closed on 21 May 2026, and solar with a battery on its own was never eligible for it.
Scotland: Business Energy Scotland’s SME Loan is not accepting new applications for solar PV. Charities and non-profits whose building has or is installing low-carbon heating can look at the CARES Let’s Do Net Zero Community Buildings Fund, up to £80,000 at 80%.
Northern Ireland: Power NI’s NISEP-funded grant for business solar PV (20%, capped at £30,000) has closed for applications for 2026/27; Power NI expects the next round to open in April 2027, subject to funding approval. Invest NI’s Energy Efficiency Capital Grant is paused.
The nation-by-nation detail is on our grants and funding page.
4. Salix (public sector only)
England: there is no general interest-free Salix loan for English public bodies. Salix administered PSDS for DESNZ, which is not a loan facility.
Scotland and Wales: public sector lending exists in Scotland (the Scottish Public Sector Energy Efficiency Loan Scheme, zero interest, and the Scotland Recycling Fund) and in Wales (the Wales Funding Programme, a fixed 2.45%; only its Invest to Save strand is interest-free). Confirm with Salix that a canopy structure is covered before relying on either.
5. PSDS (Public Sector Decarbonisation Scheme)
PSDS: closed to new applications in November 2024 and no further window has been announced. It was heat-led: solar was fundable as a supporting measure alongside replacing fossil-fuel heating, not as a standalone canopy grant. See the PSDS funding position.
Applications: none are being accepted.
6. Power purchase agreement (no capital outlay)
Not a grant: a provider funds, installs and owns the canopy array, and the site buys the electricity it uses at a rate agreed in the contract, commonly over 15 to 25 years. There is no capital outlay, but the site does not own the asset and cannot claim the capital allowances on it.
When it makes sense: a site with high daytime demand and no capital budget, or a public body that cannot borrow. Exiting early usually carries a cost, so read the termination terms closely. We do not arrange PPAs.
Putting the routes together
For most UK businesses the realistic order is:
- Capital allowances on the canopy, whether it is bought outright or on hire purchase.
- Own funds, a loan, hire purchase or a lease for the capital. Rates depend on the lender, your accounts and the project, so compare written quotations.
- A PPA where capital is not available at all.
- SEG registration once commissioned, in Great Britain.
- A grant, only if one is genuinely open for your nation, sector and site, and only once it is confirmed in writing.
On this site’s 50-space worked example (85 kWp, £76,500 to £119,000 installed, 80% of the power used on site at 24p a unit and 20% exported at 12p), the canopy pays back in about 4.8 to 7.4 years before tax relief at a mid-England yield, with no grant in the sums. The inputs and the regional versions are on the solar canopy cost page.
If you are comparing structures at this stage, our solar panel canopy guide carries the spec tables. If the site is Welsh, the consent route is entirely different: there is no canopy permitted development right at all, as our page on solar canopies in Wales explains.
Sources, checked 3 November 2026: Capital Allowances Act 2001, s104A and s67; Ofgem, Smart Export Guarantee; GOV.UK, Industrial Energy Transformation Fund (closed); Development Bank of Wales, Green Business Loan Scheme; Senedd WQ96151; gov.wales, Ynni Cymru 2026/27; Business Energy Scotland, SME Loan; Local Energy Scotland, CARES Community Buildings Fund; Utility Regulator, NISEP schemes 2026-27; Invest NI, Energy Efficiency Capital Grant; Salix, Welsh loans.