What grants are available for business solar in the UK?
There is no single national grant for UK commercial solar in 2026, but businesses can access substantial support: 100% Full Expensing (25% corporation tax saving), the Salix public-sector loan scheme (interest-free for schools, NHS and councils), the Industrial Energy Transformation Fund (IETF) for manufacturers, and regional decarbonisation schemes from Growth Hubs and Combined Authorities.
Last updated 26 July 2026.
Key facts at a glance
| Full Expensing (limited companies) | 100% first-year deduction, 25% tax saving |
|---|---|
| Annual Investment Allowance (partnerships) | 100% up to £1 million/year |
| Salix loans (public sector) | Interest-free for schools, NHS, councils |
| IETF (manufacturers) | Grants for energy efficiency and decarbonisation |
| Regional Growth Hubs | SME decarbonisation grants (£1k–£50k typical) |
| Smart Export Guarantee (SEG) | Ongoing payment for exported electricity |
Why tax relief usually beats grants
For most limited companies, 100% Full Expensing delivers larger, faster, more predictable benefit than any regional grant — £50,000 back on a £200,000 system at 25% corporation tax. Grants usually cap out at 30–40% of a specific cost line and involve months of paperwork.
Where grants do move the needle
Public-sector estates (Salix), heavy industry (IETF), and SMEs in eligible Growth Hub regions. Rural businesses can sometimes access DEFRA's Farming Investment Fund for on-farm solar and battery.
Related reading
FAQ
Is there a UK solar grant for small businesses?
Not nationally, but many Local Enterprise Partnerships and Combined Authorities run periodic SME decarbonisation grants of £5,000–£50,000. Availability varies by region and quarter.
Can charities and schools get solar grants?
Yes — Salix offers interest-free loans to schools, NHS trusts and public-sector estates. Some charities can access National Lottery Community Fund awards for solar.
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