Technical FAQs 4

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 solar panel cost?

The cost of a solar panel system depends on several factors: System size: Measured in kilowatt-peak (kWp), larger systems cost more but generate more power. Panel type: Premium monocrystalline panels (£1,000–£1,500/kW) are pricier than polycrystalline (£900/kW) or thin-film (£400–£800/kW).

How much does a 400 watt solar panel cost?

A single 400-watt solar panel costs £150–£350, depending on brand and efficiency. This price excludes installation, inverters, or mounting systems. For context, a 4.0 kWp system requires 10 such panels, plus labour and materials, bringing the total to £7,000–£12,000.

How much do monocrystalline solar panels cost?

The exact cost of monocrystalline solar panels will vary depending on the manufacturer and the size of the solar panels. As a rule of thumb, monocrystalline solar panels have their highest price point at about £1 – £1.50 per Watt. Polycrystalline solar panels, on the other hand, have a lower efficiency rating than monocrystalline panels.

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