Solar Panel costs
The cost of solar panels in the UK has been declining in recent years, and it is now more affordable than ever to install solar panels on your home.
The average cost of a solar panel system in the UK in 2025 is around £4,542, adding a battery to the system is not that much more expensive £7,695 for 5kwh battery which should keep the average house running through the night. This includes the cost of the panels themselves, the inverter, the mounting system, and the installation.
The cost of solar panels will vary depending on a number of factors, including the size of the system, the type of panels, and the location of your home.
For example, a larger system will cost more than a smaller system, and panels that are made with higher-quality materials will cost more than panels that are made with lower-quality materials.
The location of your home will also affect the cost of solar panels, as homes in sunnier areas will generate more electricity than homes in less sunny areas.
Here is a breakdown of the average cost of solar panels in the UK in 2025:
- Solar panels: £80-£300 per panel
- Inverter: £1,000-£1,900
- Mounting system: £500-£1,000
- Installation: £2,000-£3,000
- Battery 5kwh £2,050- £4,000
The total cost of a solar panel system will vary depending on the size of the system, but a typical 4kW system will cost around £4450 to install.
Smart Export Guarantee
There are a number of government incentives available to help homeowners offset the cost of solar panels.
These incentives include the Smart Export Guarantee (SEG).
The SEG is a government scheme that pays homeowners for the excess electricity that their solar panels generate and export to the grid prices are paid on a per KWH of electricity from 5p-32p depending on the time of day.
The government incentives can significantly reduce the cost of solar panels, and they can make solar panels a very affordable option for homeowners.
