Key facts
Current grant positionNo universal UK-wide commercial solar grant exists for every SME. Funding is normally local, sector-specific, time-limited or tax-led.
Where to check firstUse GOV.UK Find a grant, your council, combined authority, growth hub and local UKSPF or REPF business support pages.
Tax cautionHMRC treats solar panels as special-rate plant. Ask an accountant about AIA, 50% first-year allowance or special-rate pools rather than assuming full expensing.
Export paymentsThe Smart Export Guarantee can pay eligible solar PV generators in Great Britain with total installed capacity up to 5MW.
VAT caveatThe 0% energy-saving materials relief is for residential accommodation and qualifying charitable buildings, not ordinary commercial premises.
Which business solar funding routes are realistic?
Start with local funding, not a national promise. Many live commercial solar grants are run by councils, combined authorities, growth hubs or rural business programmes. They often have limited budgets, match-funding rules, evidence requirements and hard project-completion dates.
| Route | Who it fits | What to check before applying |
|---|---|---|
| Local business grant | SMEs, high-street premises, local employers, rural businesses | Postcode, trading history, match funding, carbon-saving evidence, quote deadline |
| Rural or farm diversification grant | Rural SMEs and farms adding non-farming income or reducing operating costs | REPF area, eligible spend, whether farming production is excluded, completion date |
| Public sector route | Schools, councils, NHS, emergency services and eligible public bodies | Salix/PSDS fit, heat decarbonisation plan, estate owner approval, project governance |
| SEG export tariff | Sites exporting surplus solar electricity | Export meter, certification, supplier tariff, contract terms, export limit |
| Tax and rates treatment | Companies buying the system outright | Solar special-rate treatment, AIA position, business rates treatment, accountant advice |
How to avoid wasting time
- Collect 12 months of electricity bills, half-hourly data if available, MPAN, roof photos and any lease or landlord consent before requesting quotes.
- Ask for a solar-only quote and a solar-plus-battery option so grant bodies can see the bill-saving and carbon case separately.
- Check DNO/export constraints early. Export limits can change the system size, battery logic and payback.
- Do not start work before a grant agreement if the funding rules say pre-committed spend is ineligible.
Sources checked
- GOV.UK - Find government grants
- GOV.UK - business green funding
- Ofgem - Smart Export Guarantee
- GOV.UK - VAT Notice 708/6
- HMRC - solar panels capital allowances
- GOV.UK - full expensing and first-year allowances
- GOV.UK - green business rates measures
- GOV.UK - Rural England Prosperity Fund example
- Salix - Public Sector Decarbonisation Scheme
- GOV.UK - Public Sector Low Carbon Skills Fund
- Planning Data - non-domestic solar permitted development
Great British Energy is an independent guide and is not affiliated with the government-owned Great British Energy at gbe.gov.uk. Funding rules change; verify against official sources before committing spend.