How Much Do 50kW Commercial Solar Panels Cost in the UK?
Detailed cost breakdown for 50kW commercial solar systems. The most popular size for UK businesses explained.

50kW systems are the most popular size for medium-sized UK businesses. This guide breaks down exactly what you can expect to pay and earn.
50kW System Costs
A 50kW commercial solar installation typically costs 45,000-60,000 depending on location, roof type, and equipment choice.
What 50kW Includes
- Panels: 120-135 solar panels (depending on wattage)
- Inverters: 1-2 string inverters or micro-inverters
- Mounting: Roof-mounted system with all fixings
- Electrical: Full electrical installation and connection
- Monitoring: Real-time performance monitoring system
Expected Returns
A 50kW system generates approximately 42,000-48,000 kWh annually, worth 14,000-17,000 at current electricity prices. This means payback in 3-4 years.
Ideal For
50kW systems suit businesses consuming 40,000-60,000 kWh annually, including medium warehouses, manufacturing facilities, and large retail stores.
25-Year Value
Over 25 years, a 50kW system generates savings of 350,000-450,000, representing an ROI of 600-800%.