What could solar and battery storage deliver financially in the UK?

For many UK homes, solar and battery storage builds savings over time. Across more than 15 million rooftops, the report estimates average annual bill savings of £946 against an average upfront cost of £7,844.50.

The national average

• Upfront cost: £7,844.50
• Annual bill saving: £946
• Payback: 7.9 years
• 10-year return: £1,555
• 20-year return: £10,832

Where the savings come from

Solar reduces the electricity you buy from the grid. A battery stores what you do not need straight away for later. Eligible households are also paid for exports through the Smart Export Guarantee.

Local examples

• Torbay: £1,069 a year, 7.04 year payback
• Belfast: £942, 7.84 years
• Cardiff: £942, 7.86 years
• Fermanagh and Omagh: £883, 8.36 years
• Glasgow City: £867, 8.53 years

Will every home match?

No. Two homes with the same system can differ with roof size, slope and orientation, panel count, regional consumption, battery size, self-consumption and cost. A personal assessment is the best guide.

All figures are modelled estimates for typical UK rooftops, not guarantees for any individual home. Rules, funding and eligibility can change, so check current government and supplier guidance before deciding.

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