Grants & Finance
Solar grants and finance in Wales
Welsh businesses can access up to £1 million in capital grants, alongside Development Bank loans, PPAs, and Annual Investment Allowance relief. This is a guide to all options available in 2026.
Grant and loan schemes for Welsh businesses
Unlike most of England, Wales has a separate grant programme through Welsh Government specifically for renewable energy capital expenditure. These are not loans -- they are non-repayable awards for qualifying projects.
Ynni Cymru Capital Grant
Welsh-trading businesses, social enterprises, and community groups installing qualifying renewable energy technology.
FLD can provide the technical specification required for your application at no additional charge.
Development Bank of Wales Green Business Loan
Welsh SMEs and mid-caps. Fixed rate, flexible terms. Complements Ynni Cymru grants.
FLD can provide the technical specification required for your application at no additional charge.
Salix Finance (Public Sector)
Schools, NHS Wales trusts, local authorities and other public bodies. Repaid from energy savings.
FLD can provide the technical specification required for your application at no additional charge.
Annual Investment Allowance and full expensing
Commercial solar installations qualify for 100% Annual Investment Allowance (AIA) in the year of installation under current UK tax rules. For a profitable Welsh business paying corporation tax at 25%, this means approximately 25p in tax relief for every £1 spent on a qualifying solar installation.
On a £200,000 system, that is £50,000 of first-year tax relief, reducing the effective net cost to £150,000 and cutting the payback period from 3.4 years to approximately 2.5 years post-tax.
Permanent full expensing (announced in the 2023 Autumn Statement) extended this relief indefinitely for qualifying plant and machinery, which includes solar PV assets. The current AIA limit is £1 million per year.
A Power Purchase Agreement lets your business install solar with no capital outlay. We fund the system and you buy the electricity it generates at a fixed, RPI-indexed unit rate that is lower than your grid tariff. Typical terms are 10 to 25 years, with a buy-out option at the end.
Purchase the system outright and claim 100% first-year Annual Investment Allowance relief under current rules. Post-tax payback is typically 2.5 to 4 years for commercial rooftop solar in South Wales.
Hire purchase or lease structures for businesses that want ownership without a one-off capital hit. We work with established UK asset-finance lenders.
Apply before you commit to procurement
Ynni Cymru requires that you receive an award letter before signing contracts or purchasing equipment. Retrospective applications are not accepted. If you proceed with installation before applying, you are no longer eligible.
The expression of interest takes 20 minutes to complete. FLD provides the technical specification pack at no charge. Submit the expression of interest at the same time as you request quotes.
Request a quote and grant supportFinance and grant guides
Commercial solar in the M4 corridor: Cwmbran, Newport and the Torfaen-Monmouthshire industrial guide
Commercial solar economics for the M4 corridor from Newport to Cwmbran -- Llantarnam Industrial Park 24-hour logistics, Newport M4 distribution parks, and payback examples across NP44 and NP20.
Commercial solar for Vale of Glamorgan businesses: Barry Docks, Cowbridge conservation area and the CF postcode guide
A commercial and domestic solar guide for the Vale of Glamorgan -- Vale of Glamorgan Business Park at Barry, Cowbridge conservation area domestic solar, and payback examples across CF62, CF63 and CF71.
Commercial solar in the Celtic Freeport: Fishguard, Milford Haven and the Pembrokeshire port solar case
How Celtic Freeport designation changes the commercial solar investment case for Fishguard Harbour, Milford Haven port estate and Pembrokeshire logistics -- enhanced capital allowances, Freeport outer boundary eligibility and payback examples for SA65 and SA73.
Solar in Dolgellau and Eryri: dark-stone townscape, in-roof integrated panels and National Park planning
A planning and design guide for solar installation in Dolgellau and the Eryri National Park. Why dark-frame black-panel in-roof integrated systems are the standard specification for LL40, when ENPA pre-application is needed, and payback for Mawddach valley guesthouses.
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