What is Commercial Solar?
Solar panel systems installed on business premises — offices, warehouses, farms — typically 10–200 kWp.
Quick Answer
UK businesses can claim Enhanced Capital Allowances (ECA) — writing off 100% of the solar investment against tax in year one. The Smart Export Guarantee also applies to commercial installations up to 5MW. Commercial electricity rates in the UK (20–30p/kWh) make solar highly attractive for businesses with daytime consumption patterns.
Fact-checked by John Rooney, Solar Energy Editor. Editorial policy
Commercial Solar Explained
Commercial solar refers to solar PV installations on business, industrial, or agricultural properties. These systems are typically larger than residential (10–200 kWp) and are mounted on flat commercial roofs, warehouses, or car parks. Commercial solar offers businesses significant electricity cost savings, reduced carbon footprint, and potential revenue from excess generation. The economics are often more attractive than residential due to higher daytime electricity consumption and larger system sizes.
How Does Commercial Solar Work in the UK?
UK businesses can claim Enhanced Capital Allowances (ECA) — writing off 100% of the solar investment against tax in year one. The Smart Export Guarantee also applies to commercial installations up to 5MW. Commercial electricity rates in the UK (20–30p/kWh) make solar highly attractive for businesses with daytime consumption patterns.
Frequently Asked Questions
Is solar worth it for my business in the UK?
Usually yes. Businesses consume most electricity during daylight hours (matching solar output), can claim ECA tax relief, and often have large, unshaded flat roofs ideal for solar.
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John Rooney is the founder of Solar Info and has been covering the UK solar energy market since 2023. He fact-checks all content against official MCS and Ofgem data and maintains relationships with MCS-certified installers across the UK.