How much does solar battery storage cost in the UK?
A Solar battery storage costs £2,500 to £9,000 in the UK, typically around £5,000 installed. What moves the price most is usable capacity in kWh, so a simpler job sits near the bottom of that range and a larger or higher-spec one near the top. Prices reviewed June 2026.
A home battery stores solar or cheap off-peak electricity so you can use it later, priced by usable capacity in kWh. Most installs land between £2,500 and £9,000 fitted, with a typical 10kWh battery around £5,000.
Solar battery storage cost calculator
Use the calculator to price your Solar battery storage in 2026. Adjust the options and area for a UK cost range. Nothing is sent anywhere.
Solar battery storage cost breakdown
Typical Solar battery storage costs, by option:
| Battery capacity | Typical UK cost |
|---|---|
| Around 5 kWh (small home or top-up) | £2,500 to £4,000 |
| Around 10 kWh (typical) | £4,500 to £6,500 |
| 13.5 kWh or more (large home or backup) | £7,000 to £9,000 |
What's included in the price?
Typical Solar battery storage prices include:
- The battery unit and its wall or floor mounting
- A battery inverter, or a hybrid inverter if you are replacing the solar one
- Wiring, isolators and the connection to your consumer unit
- Fitting and commissioning by an MCS certified installer
- A monitoring app, system setup and grid (DNO) notification
What changes the price?
The things that move Solar battery storage prices most:
Usable capacity in kWh, which is the main price driver
Whether you already have solar or a compatible inverter
Battery brand and chemistry, as Tesla, Fox and SolaX price differently
An AC-coupled retrofit versus a full hybrid inverter setup
Whether you want backup power during a cut, which adds cost
How the price is built up
The figure on your quote is built up from the battery unit, the inverter or battery management hardware, the wiring and consumer-unit work, and half a day to a day of installer labour, plus commissioning and the notification to your grid operator. Usable capacity is the main driver, so a 5kWh battery near the £2,500 end holds far less than a 13.5kWh unit closer to £9,000. A straight AC-coupled retrofit to working solar is usually cheaper than swapping in a hybrid inverter, and whole-home backup adds hardware and cost. Battery storage fitted on its own currently carries 0% VAT until 31 March 2027, so the prices here already reflect that relief. Most of the cost is the battery itself, and the inverter where one is needed. Labour and electrical work are a smaller share, usually a day or less on site, which is why retrofitting a battery to an existing solar system costs far less than a full panels-and-storage install.
Ways to keep the cost down
- Size the battery to your evening and overnight use rather than buying the biggest on offer. Capacity you never cycle just sits there and slows the payback.
- Get three MCS certified quotes for the same kWh, since installed prices for the same battery vary widely between firms.
- If you are on a time-of-use tariff, a battery can charge on cheap off-peak power even without solar, which often improves the sums more than solar alone.
- Ask whether the quote is AC-coupled or needs a new hybrid inverter, as swapping the inverter adds cost that a simple retrofit avoids.
Does where you live change the cost?
In London, a Solar battery storage typically costs around £6,500 installed, about 30% above the UK average of £5,000. In the North, Scotland and Wales the guide figure is nearer £4,600.
| Region | From | Typical | Up to |
|---|---|---|---|
| Midlands / East (UK average) | £2,500 | £5,000 | £9,000 |
| London | £3,300 | £6,500 | £11,500 |
| South East / South West | £2,900 | £5,800 | £10,500 |
| North / Scotland / Wales | £2,300 | £4,600 | £8,300 |
Guide prices installed, scaled with the same regional multipliers as the calculator. Not quotes.
Solar battery storage cost in major UK cities
| City | From | Typical | Up to |
|---|---|---|---|
| Belfast | £2,100 | £4,300 | £7,700 |
| Birmingham | £2,500 | £4,900 | £8,800 |
| Bristol | £2,800 | £5,500 | £9,900 |
| Cardiff | £2,400 | £4,700 | £8,500 |
| Edinburgh | £2,500 | £4,900 | £8,800 |
| Glasgow | £2,300 | £4,500 | £8,100 |
| Leeds | £2,300 | £4,700 | £8,400 |
| Liverpool | £2,300 | £4,600 | £8,300 |
| London | £3,300 | £6,500 | £11,500 |
| Manchester | £2,400 | £4,800 | £8,600 |
| Newcastle | £2,300 | £4,500 | £8,100 |
| Sheffield | £2,300 | £4,600 | £8,300 |
City guide estimates, scaled by local labour costs. Indicative averages for Solar battery storage, not quotes.
Mostly indoor electrical work, so less location-sensitive than roofing or wet trades, though labour rates run higher in London and the South East.
Common questions
How much does solar battery storage cost in the UK?
A home battery typically costs between £2,500 and £9,000 installed, with a mid-sized 10kWh battery around £5,000 fitted. Capacity is the main driver: a small 5kWh unit for covering an evening usually lands near £2,500 to £4,000, while a 13.5kWh battery sized for a larger home or whole-home backup runs £7,000 to £9,000. Retrofitting to an existing solar system costs less than buying panels and storage together, since the roof work and much of the wiring are already done.
What size solar battery do I need?
Most homes are well served by a battery of around 5kWh to 10kWh, sized to cover evening and overnight use rather than the whole day. A 5kWh battery suits a smaller household or a top-up alongside panels, a 10kWh battery fits a typical family home, and 13.5kWh or more makes sense if you have high usage, an EV or want backup during a power cut. Oversizing wastes money because capacity you never cycle just sits there, so it is worth checking your evening electricity use before deciding.
Is a solar battery worth it?
A battery lets you store daytime solar or cheap off-peak power and use it later instead of buying at the peak rate, which can meaningfully cut a bill. Whether it pays for itself depends on your tariff, how much you generate or import cheaply, and the price you pay for the battery. On solar alone, payback often runs 8 to 15 years, which can be as long as the warranty, so many people fit one for backup and energy independence as much as pure savings. On a time-of-use tariff the case is usually stronger, because you can charge every night on cheap units and use them across the day.
Can I add a battery to my existing solar panels?
Yes. A battery can be retrofitted to an existing solar system using an AC-coupled setup, which adds its own small inverter and sits alongside your current one, or by swapping to a hybrid inverter that handles panels and battery together. AC-coupling is usually the simpler retrofit and avoids touching the working solar side. A retrofit battery generally costs £2,500 to £7,000 depending on capacity, less than buying panels and storage from scratch because the array and much of the wiring already exist.
Can I install a solar battery myself?
It is not a sensible DIY job. Home batteries store a lot of energy at voltages that can be dangerous, and the connection to your consumer unit must be done by a qualified electrician. To keep the manufacturer warranty and to register the system with your grid operator you generally need an MCS certified installer, and without that certification you can lose access to grants and export tariffs. The labour is only a small part of the total, so fitting it yourself saves little and risks a lot.
How long do solar batteries last?
Most home batteries are warranted for around 10 years or a set number of full charge cycles, often several thousand, whichever comes first. In everyday use a battery cycles roughly once a day, so a typical unit lasts around 10 to 15 years before its usable capacity drops enough to think about replacement. Lithium batteries lose a little capacity each year rather than failing suddenly, and most still hold about 70 to 80 percent of their original capacity by the end of the warranty period.
These are independent guide prices based on typical UK jobs in 2026. Your actual cost depends on your property, spec, access and where you live. Always get at least three written quotes before committing.