How Much Could You Save With Solar?

Over 1.3 million UK homes already generate their own electricity. Enter your postcode to see local sun hours, estimated savings, and payback period.

1.3M+

UK Homes with Solar

£684

Avg Annual Savings

9.4 Years

Avg Payback

3,788 kWh

Avg Generation

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Top 10 Sunniest Areas for Solar in the UK

#	Postcode	Town	County	Sun Hours	Annual Savings
1	BA9	Wincanton	Somerset	1541hrs	£786/yr
2	BA8	Templecombe	Somerset	1540hrs	£785/yr
3	BA7	Castle Cary	Somerset	1539hrs	£784/yr
4	BA4	Shepton Mallet	Somerset	1536hrs	£783/yr
5	BA5	Wells	Somerset	1537hrs	£783/yr
6	BA6	Glastonbury	Somerset	1538hrs	£783/yr
7	BH19	Swanage	Dorset	1536hrs	£783/yr
8	TR19	Penzance	Cornwall	1536hrs	£783/yr
9	BA1	Bath	Somerset	1533hrs	£782/yr
10	BA2	Bath	Somerset	1534hrs	£782/yr

See all 50 best areas →

How Solar Saves You Money

Solar panels generate free electricity from sunlight. A typical 4kW system on a UK home produces around 3,788 kWh per year. You save money in two ways:

Self-consumption — roughly half the electricity you generate is used directly in your home, replacing power you would otherwise buy from the grid at around 24.5p/kWh. This is where the biggest savings come from.

Smart Export Guarantee (SEG) — the remaining electricity is exported to the grid, and your energy supplier pays you for it. Rates typically range from 4-15p/kWh depending on your supplier and tariff.

Combined, these two income streams mean the average UK household saves £684 per year, paying back the system cost in 9.4 years — then enjoying 15+ years of pure profit.