Quick answer
A typical home battery costs £3,000–£6,000 installed. The most common sizes are 5kWh to 15kWh. Prices have fallen significantly since 2020.
Home battery prices in the UK have dropped significantly in recent years. A typical 5kWh battery system costs around £3,000–£4,500 installed. A larger 10kWh system costs £4,500–£7,000. The most popular systems in the UK include the Tesla Powerwall 3 (13.5kWh, around £8,000–£10,000 installed), GivEnergy (various sizes, £3,500–£6,000), and Solis (£3,000–£5,000). All battery storage qualifies for 0% VAT in the UK. If combined with solar panels, the combined system typically qualifies for the Smart Export Guarantee (SEG) which pays you for electricity exported to the grid. Payback period is typically 8–15 years depending on usage and electricity tariff.
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