How much does a home battery cost?
The short answer
A typical 5 kWh home battery costs £2,500–£4,500 fitted. A 10 kWh battery is usually £4,500–£7,500.
Typical prices
| Job | Typical cost | Time |
|---|---|---|
| 5 kWh battery | £2,500–£4,500 | Half a day |
| 10 kWh battery | £4,500–£7,500 | 1 day |
| Hybrid inverter swap | £800–£1,500 | Half a day |
Typical UK prices for 2025–26, including VAT. Estimates only: your quotes will vary by home, location and the work involved.
What affects the price
- Battery size (kWh)
- Whether your inverter needs replacing
- Where it's fitted: garage, loft or outside
- Brand and warranty length
What's usually included
- Battery and any new inverter
- Fitting and wiring
- App set-up
- Notifying your network operator
Ways to bring the cost down
- Match the size to your evening use, not the biggest you can buy
- Pair it with a time-of-use tariff
- 0% VAT applies to batteries fitted at homes in Great Britain
See what yours would costCompare up to 3 quotes from MCS-certified installers near you.
Compare quotes
Questions people ask
Is a battery worth it with solar?
It depends on how much of your solar you use at home. Without a battery, much of the daytime power goes back to the grid. A battery lets you use it in the evening instead, which is usually worth more than the export rate.
Can I get a battery without solar panels?
Yes. You can charge it on a cheap overnight tariff and use that power at peak times.
How long do home batteries last?
Most come with a 10-year warranty and are rated for thousands of charge cycles. Check the warranty terms on each quote.