Rooftop solar in United Kingdom typically costs about £1,360 per kW installed, and household electricity is around £0.255 per kWh. The average sunshine is about 2.7 peak sun hours a day.
As a rough example, a 5 kW home system would cost about £7,820, make around 3,696 kWh a year, and save about £942 a year. That is a payback of roughly 8.3 years.
Rooftop solar
For homes and businesses. Size, cost, savings and payback.
Open rooftop calculatorSolar plant
For larger projects. Project returns and break-even price.
Open plant calculatorThese are typical estimates, not quotes. Replace them with real quotes before you decide anything.