Why do prices vary so much?

Panel brand (LONGi vs SunPower = 20-40% difference), inverter choice, installation complexity (scaffolding access, roof type), and installer margin. Get 3+ quotes to find the market price for your installation.

Are these prices before or after VAT?

These are FINAL prices at 0% VAT (current rate for residential solar). If VAT reverts to 5-20% after March 2027: add £275-£1,600 to these prices. Install now to lock in 0% VAT.

Many installers offer 0% finance over 3-5 years, or low-interest finance over 5-10 years. Monthly payments: typically £80-£150/month. Your solar savings (£50-£90/month) offset most of the payment.

Will prices drop further?

Unlikely to drop significantly — manufacturing costs are near their floor. Prices may decrease 1-3% per year. But waiting costs £50-£90/month in missed savings. The maths favours installing now.

Solar Panel Costs 2026

By Home Solar Guide Team|Updated 20 March 2026|money

Independently written | Plain-English guide

Solar costs 2026 — 2026 prices: 3kW from £4,000. 4kW from £5,500. All at 0% VAT.

What would this actually cost at your home?

Installed prices vary widely by roof, access and region. Get an installed price for your property from MCS-certified installers.

Get an Installed Price

Free, no obligation. Takes about 2 minutes.

What would this actually cost at your home?

Installed prices vary widely by roof, access and region. Get an installed price for your property from MCS-certified installers.

Get an Installed Price

How much do solar panels cost in 2026?

UK solar panel costs 2026 (fully installed, including 0% VAT): 2kW (5 panels): £3,000-£4,000. 3kW (8 panels): £4,000-£5,500. 4kW (10 panels): £5,500-£7,000. 5kW (12 panels): £6,500-£8,000. 6kW (15 panels): £7,500-£9,000. 8kW (20 panels): £9,000-£11,500. 10kW (25 panels): £10,000-£14,000. ADD BATTERY: +£4,000-£6,000 for 5-10kWh. COST PER kW: £1,200-£1,800 (decreases with larger systems). COST INCLUDES: panels, inverter, mounting, wiring, scaffolding, DNO notification, MCS certification. DOES NOT INCLUDE: battery (optional), EV charger (optional), roof repairs (if needed). These prices are 90% cheaper than 2010 and have stabilised since 2023.