UK businesses are installing solar at record rates — 257,397 systems in 2024, with commercial installations up 34% year-on-year. Whether you operate a warehouse, factory, hotel, restaurant, school, or office, commercial solar panels cost £800–£1,100 per kW installed and pay back in 3–5 years. With 0% VAT, 100% Annual Investment Allowance, and electricity prices at 24–30p/kWh, commercial solar delivers 15–25% annual returns — outperforming most business investments.
Warehouses: The best-case for commercial solar. Massive flat roofs, 70–90% self-consumption, 2.5–3.5 year payback. 100kW system: £80,000–£95,000, saving £25,000–£35,000/year.
Factories: High daytime energy consumption aligns perfectly with solar generation. 100–500kW arrays common. Payback 2.5–4 years. 100% AIA means the tax bill drops by £25,000+ on a £100,000 system.
Hotels: Year-round high energy demand (394 kWh/m² average). 50–100kW systems save £12,000–£25,000/year. Guest-facing sustainability credentials increasingly influence booking decisions.
Schools: Government funding covers 100% of costs via Salix Finance interest-free loans. 30–100kW systems save £3,000–£12,000/year. DBS-checked installation teams work during holidays only.
Restaurants & Pubs: Commercial kitchen energy consumption makes solar highly effective. 15–30kW systems from £13,500. Terrace solar canopies extend outdoor dining season.
Farms: Large barn roofs, high energy use for milking/grain drying/irrigation. Agricultural grants (FETF) provide 25–50% additional funding on top of 0% VAT and AIA.
0% VAT on all commercial solar installations, extended through 2027. Saves £20,000 on a £100,000 system. 100% AIA (Annual Investment Allowance) — deduct the full cost against taxable profits in year one. At 25% corporation tax, a £100,000 system reduces your tax bill by £25,000. Business rates exemption for rooftop solar under 50kW. SEG export payments of 4.1–15p/kWh for surplus electricity. Combined incentives reduce the effective cost by 35–45%.
Commercial solar costs £800–£1,100 per kW installed. A small business (10–30kW) pays £9,000–£33,000. A medium business (50–100kW) pays £42,500–£100,000. Large commercial (250kW–1MW) pays £200,000–£850,000. After 0% VAT and AIA tax relief, effective costs drop by 35–45%. Use our business solar calculator for an instant estimate.
Yes. While there is no single direct grant, UK businesses benefit from 0% VAT (20% saving), 100% Annual Investment Allowance (up to 25% tax relief), business rates exemption, and SEG income. Public sector organisations can access the Public Sector Decarbonisation Scheme for capital grants. See our full business solar grants guide.
UK commercial solar pays back in 3–5 years. Warehouses and factories achieve 2.5–3.5 years due to high daytime consumption. After payback, businesses enjoy 20+ years of near-free electricity. View detailed analysis at our commercial solar costs guide.
Yes. Options include capital purchase, hire purchase (3–7 year terms), operating lease, and Power Purchase Agreements (PPAs) requiring zero upfront cost. Many businesses achieve cash-flow positive solar from month one with hire purchase — monthly repayments are less than monthly energy savings. See our finance guide for all options.
UK Commercial Solar Network
Commercial Solar · Hotels · Warehouses · Factories · Carports · Schools · Finance · Grants · Costs