Commercial Solar Panels Across Scotland

Yes. The UK government introduced 0% VAT on the supply and installation of solar panels and battery storage, effective from April 2022 until at least March 2027. This applies to commercial as well as residential installations. For a 50kWp system at £32,000, this represents a saving of £6,400 compared to the standard 20% VAT rate. This relief applies to the full installation including panels, inverters, mounting, and labour.

The typical payback period for a commercial solar installation in Scotland is 4 to 6 years, depending on system size, electricity consumption profile, and energy prices. With 0% VAT and current electricity rates of 25 to 30p per kWh, payback periods are shorter than ever. After payback, the system generates essentially free electricity for another 20+ years. Businesses with high daytime consumption see the fastest returns.

In many cases, rooftop commercial solar installations fall under permitted development rights and do not require planning permission. However, ground-mounted systems, installations on listed buildings, and projects in conservation areas will typically require planning consent. Systems over 50kW may also have additional planning considerations. We handle all planning applications as part of our service and advise on the requirements during the initial survey.

A G99 application is required for any solar PV system over 16A per phase (approximately 3.68kWp on single-phase). All commercial systems therefore require G99 approval from the local Distribution Network Operator (DNO) before commissioning. The G99 process involves submitting system design details to the DNO for assessment and approval. This can take 8 to 12 weeks. We manage the entire G99 application process on your behalf as standard.

Yes, and commercial battery storage is increasingly popular. Batteries allow you to store excess solar generation for use during peak rate periods, reducing your reliance on expensive grid electricity. They can also provide backup power and enable participation in grid flexibility services for additional revenue. We design and install battery storage systems from leading commercial brands. Battery storage also qualifies for 0% VAT until March 2027.

Absolutely. Flat roofs are very common on commercial buildings and are well-suited to solar installations. We use ballasted mounting systems that do not penetrate the roof membrane, preserving your waterproof guarantee. Panels are typically tilted at 10 to 15 degrees on flat roofs, which provides good generation while minimising wind loading. Flat roofs also offer flexibility in panel orientation, allowing us to optimise the layout for your building.

Commercial solar systems require minimal maintenance. We recommend an annual inspection and performance review, plus periodic panel cleaning (typically every 12 to 24 months depending on the environment). Inverters should be checked annually for error codes and firmware updates. We offer commercial maintenance contracts that include annual inspection, performance reporting, cleaning, and priority callout for any faults. This helps maximise generation and lifespan.

Yes. Commercial solar PV installations qualify for the Annual Investment Allowance (AIA), which allows businesses to deduct the full cost of the installation from taxable profits in the year of purchase, up to the AIA limit (currently £1,000,000). This means a 50kWp system at £32,000 could reduce your corporation tax bill by £8,000 (at 25% rate). We recommend consulting your accountant for advice specific to your business.