What businesses should know before installing

Commercial solar PV is one of the most practical upgrades many Cornwall businesses can make. Why? Because solar generation often lines up with working hours, meaning more power can be used on site without needing storage.

Whether you run a warehouse, office, hospitality site or farm, commercial solar can reduce overheads and support sustainability goals, but only when it is designed properly.

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Highlights

Commercial solar PV can reduce daytime electricity costs by using power on site first.
Roof type, usable space, access and shading matter more than people realise.
DNO applications and export limits may affect system design.
Monitoring is essential for protecting long-term performance.

Why commercial solar works well

Businesses often benefit because:

electricity use is higher in daytime
site loads align naturally with solar generation
systems can be scaled based on roof space and demand

Roof types, flat roofs and industrial sites

Many Cornwall commercial installs involve:

flat roofs
large roof spans
rooflights and plant equipment
exposed coastal conditions

This is why survey-first design matters. Layout needs to protect drainage routes, access paths, and long-term maintenance.

DNO and export limits

Commercial systems often require DNO review and permissions, particularly where export could be significant. Export limits don’t mean solar isn’t worth it, they just shape how the system is designed.

DNO approval guide