Solar Lifetime Cost UK

By Home Solar Guide Team||money
Independently written | Plain-English guide
Lifetime cost
Total cost vs total benefit over 25 years — the result is overwhelmingly positive.

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.

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Lifetime
Benefits
One replacement
25 years

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

What is the total lifetime cost of solar?

25-year solar lifetime cost (4kW system): Installation: £6,750. Inverter replacement (yr 12): £1,000. Cleaning (8 cleans): £800. TOTAL COST: £8,550. 25-year benefits: Bill savings: £12,540-£20,500. SEG income: £1,960-£5,000. TOTAL BENEFIT: £14,500-£25,500. NET PROFIT: £5,950-£16,950. ROI: 70-198%. With battery + smart tariff: costs increase to £16,250 but benefits increase to £27,000+. Net profit: £10,750+.

Frequently Asked Questions

Related: Home Heating Systems

Solar panels are most powerful when combined with an efficient heating system. Heat pumps use solar-generated electricity to heat your home at 300-400% efficiency — making them the ideal partner for solar.

heat pump running costs in the UK

Heat pumps use electricity at 300-400% efficiency, making them ideal partners for solar.

heat pump installation process

Heat pump installation typically takes 2-3 days and is best planned alongside solar.

From our sister site Home Heat Pump Guide

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.