Prices of solar modules in London

How much do solar panels cost in the UK?

The most common type of system is the 4kW solar system, which costs between £5,000 – £6,000. It can save the average household about £660 per year, provided that they have a decent number of sunlight hours and are installed on a south-facing roof. In 2025, the price of solar panels in the UK can vary depending on several factors.

How much does a 4KW Solar System cost in the UK?

A standard-sized 4kw solar panel system for a 2-3 bedroom house in the UK typically costs around £8,000. However, costs soon start to climb the bigger the house. The cost of solar panels varies depending on the type and size of the system you require. However, as a rough guide, here are some average costs to get you started:

How much does solar panel installation cost?

Let's look at how much solar panel installation costs. The cost of solar panels varies hugely depending on the type and size of the system you require. A 4kW photovoltaic (PV) system, suitable for a 2-3 bedroom house typically costs around £8,000 (incl. installation). Including an inverter and solar battery takes the average cost to around £12,000

What are the cheapest solar panels in the UK?

The cheapest solar panels in the UK are typically polycrystalline models, which cost around £4,000–£5,000 for a small 3kW system. While they’re less efficient than monocrystalline panels, they still offer a reliable and affordable way to cut energy bills.