Solar panel installers · London
13 companies · updated daily
London currently has 13 Solar panel installers companies listed. Top-rated: The Solar Co.. Browse ratings, addresses and contact details below.
How much does Solar panel installers cost in London? (2026 price guide)
A typical 3.5kW residential solar panel system, around ten panels, costs £5,000-£7,000 fitted, a larger 4-5kW system usually runs £7,000-£10,000, and larger commercial-scale installations can cost £12,000-£25,000 or more depending on roof size and panel count.
Price depends on system size and panel efficiency, roof type and pitch, scaffolding requirements, inverter quality, and whether panels are integrated into the roof or mounted on top.
Get quotes from MCS-certified installers only, since MCS certification is usually required to qualify for export tariffs, and compare like-for-like panel wattage and warranty terms rather than headline price alone.