Grants and funding routes for office solar
Every applicable UK grant, capital allowance, and finance route for office solar in 2026. We map the optimal stack to your specific project in the free feasibility study.
Annual Investment Allowance (AIA)
- Value
- 100% first-year deduction up to £1m
- Eligibility
- All UK businesses (limited companies, partnerships, sole traders)
Full Expensing
- Value
- 100% (main pool) or 50% (special-rate pool) first-year deduction
- Eligibility
- Limited companies only
Public Sector Decarbonisation Scheme (Salix PSDS)
- Value
- Up to 100% capex grant
- Eligibility
- Central government, NHS, local authority, FE/HE, schools
Workplace Charging Scheme (OZEV WCS)
- Value
- £350/socket × up to 40 sockets (£14,000 max)
- Eligibility
- Any UK business with off-street parking
Smart Export Guarantee (SEG)
- Value
- 5-12p/kWh exported
- Eligibility
- All UK PV systems up to 5 MWp
Industrial Energy Transformation Fund (IETF)
- Value
- Up to 30% capex (max £6m)
- Eligibility
- Industrial sites in England
UK Infrastructure Bank
- Value
- £5m-£100m debt finance, below-market rates
- Eligibility
- Larger commercial projects (£5m+)
Recovery Loan Scheme (RLS)
- Value
- Up to £2m, 70% government guaranteed
- Eligibility
- UK SMEs (turnover <£45m)