The most widely installed solar panel system is a 3.5-kilowatt peak (kWp) setup, which usually consists of 12 solar panels (at 350 W each) and costs between £5,000 and £10,000. Installing solar panels could lead to annual savings of up to £465 on energy bills, based on the current Energy Price Guarantee, as per the Energy Saving Trust.
The average cost of a 350-watt solar panel in the UK is between £150-£300. The most common solar installation is a 3.5 kilowatt-peak (kWp) system. According to the Energy Saving Trust, the average 3.5kW solar panel system would typically require around 10 solar panels (at 350 W each) and cost around £7,000.
A 3.5 kWp solar panel system would typically require around 10 solar panels (at 350 W each) and cost between £5,000 and £10,000. *kWp stands for ‘kilowatt peak’. This is the amount of power that a solar panel or array will produce per hour in prime conditions.
Labour is added as a separate component to solar panel costs (UK). The labour pricing structure is calculated based on the number of installers needed times the number of days required to finish the job. For example, average labour costs range from £300 to £500 per person, per day. Complex or challenging roof layouts may increase labour costs.
On average a new solar battery will cost between £3,000 and £9,000 depending on the size, type and brand of the battery. For example, one of the most popular solar battery brands is GivEnergy that offers there batteries at around £5,000 for a battery that will provide capacity for the average three-bedroom house.
This shows that, so far in 2023 (up to the end of September), the typical price per kW of installed solar PV in domestic properties was £2,193. Back in 2021, the average cost was just £1,661 per kW. So, solar panel costs have risen significantly, reflecting general construction sector inflation.