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Solar Battery Price Guide in 2024: Installation Costs in the UK
- Solar batteries could help reduce your electricity bill by 70%. Through the Smart Export Guarantee, you could save up to £1,230 annually.
- A solar battery storage system for 2-3 bedroom houses costs £5,000 – £9,500 on average.
- 4 to 12kWh solar batteries tend to cost between £3,500 and £10,000.
Solar battery costs in the UK currently sit between £2,500 to £10,000. Various factors will influence the cost of your solar battery – from its storage capacity to the material it’s made from.
In this article, we’ll explain how these costs are made up, give you tips about what to look out for when shopping for a new solar battery, and let you know the best way you can save on installation costs.
We can even help connect you with the perfect solar installer for the job. If you’re looking to install a new solar panel system, including a new solar battery, you may find yourself spending hours searching the internet before you find suitable options to compare.
Rather than spend all this time and effort, let us at Household Quotes find up to 4 of the best installers in your area. You can then compare their free and tailored quotes until you find the best deal. All you have to do is fill in our 30-second form, and we’ll do the rest.
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How much do solar batteries cost in 2024?
Solar battery costs vary between £2,500 – £10,000, depending on the size of the battery. Typical domestic solar batteries range from 3 – 14kWh.
Larger homes with the highest energy demands will require a solar battery with more storage capacity than smaller homes. Batteries with the largest storage capacities come at higher prices.
Take a look at our price breakdown below.
| Solar battery size | Solar panel system size | Solar battery size | Solar battery cost |
|---|---|---|---|
| Small; 1-2 bedrooms | 2 – 3kW | 4 – 7kWh | £3,500 – £8,000 |
| Medium; 2-3 bedrooms | 4 – 5kW | 9 – 12kWh | £5,000 – £9,500 |
| Large; 4-5 bedrooms | 6kW | 13 – 14kWh | £10,000+ |
These prices are only estimates and are meant as a guide. For the most accurate prices, tailored to your home, you should consult a professional solar installer.
Between 2010 and 2024, global solar battery prices fell 85% as commercial production accelerated to meet increased demand. This growth was halted slightly by supply-demand shocks between 2020 and 2022.
However, following this period, solar panel battery costs in the UK are projected to continue declining, according to a report by the Mercator Research Institute.
Tesla and Powervault provide some of the best solar battery storage in the UK. Take a look at our dedicated brand pages to learn more about these companies and the solar batteries they have to offer:
Factors influencing the solar panel battery costs in the UK
As we mentioned above, one of the most important factors affecting new solar battery costs is the battery size. A battery with a larger storage capacity can store more energy for larger properties, resulting in a higher price.
The battery size required for your home will depend on the size of your solar array. Therefore, you can estimate the required solar battery size according to the size of your solar panel system and the amount of electricity your solar panel system can produce per day.
Take a look at these estimates below.
| Solar panel system | Required solar battery size | Solar battery cost | Solar panel cost | Total system cost |
|---|---|---|---|---|
| 2kW | 4 – 5kWh | £3,500 – £5,000 | £5,000 – £6,000 | £8,500 – £11,000 |
| 3kW | 6 – 7 kWh | £5,000 – £8,000 | £7,000 – £8,000 | £12,000 – £16,000 |
| 4kW | 9 – 10 kWh | £8,000 – £9,500 | £9,000 – £10,000 | £17,000 – £19,500 |
| 5kW | 11 – 12kWh | £9,000 – £10,000 | £11,000 – £12,000 | £21,000 – £22,000 |
| 6kW | 13 – 14kWh | £10,000+ | £12,000 – £13,000 | £22,000 – £23,000 |
You can estimate your daily energy needs by checking your average consumption, which is usually provided as part of your electricity bills.
Considering the upfront cost of solar panels, the additional solar battery costs may put you off. However, remember that if the battery is integrated along with the solar panels then the labour costs may be slightly lower, as all the electrical work and permitting for both the solar and battery systems can be completed in a single effort.
Let’s look at some other factors that help determine a solar battery’s cost in the UK.
Battery type
The type of battery you use can also impact the total price. In the UK, lithium-ion batteries and lead-acid batteries are the most commonly used types of domestic solar batteries.
Lithium-ion batteries are the most popular type of solar battery in the UK. This is because they are compact, long-lasting, and have a high usable capacity, often reaching depths of discharge rates of 80% or more.
Lead-acid batteries are comparatively cheaper than their lithium-ion counterparts. However, lithium-ion batteries are worth the additional cost considering that lead-acid batteries have a shorter lifespan and lower depth of discharge rate, typically only reaching around 50%.
Installation
By installing a solar battery alongside a new solar array, you will likely save more money than if you were to wait and install one down the line. That’s because the installation and labour costs will be combined with those of the solar panel system.
Installation rates can vary depending on the installer you choose. In this way, it’s possible to save money by choosing an installer that offers a good deal. However, it can be tricky to find an affordable option that you can rely on to do a good job.
This is where Household Quotes can help you. Our dedicated team is on hand to connect you with up to 4 local solar installers. With their tailored quotes, you are in the best position to find a good deal. Simply compare their offers and choose the one you’d like to work with.
Save yourself hours of stressful research, and get your free quotes from the best solar installers in your area with our quick and easy service. Click the button below to get started.
- Quotes from local installers
- Payment by finance available
- Save up to £1005 per year
Are there grants to lower solar battery costs?
While there aren’t any nationwide grants that specifically help with reducing the cost of new solar batteries, there are some government incentives and regional schemes that you can benefit from.
0% VAT
The UK government introduced a VAT cut on solar energy products as of April 2022. Solar panels and solar batteries can now be purchased with 0% VAT. VAT previously sat between 5-20% in the UK.
Solar batteries were only ever included in the scheme when installed alongside a solar panel system and did not apply to solar batteries installed retroactively. That was, until February 2024, when the VAT cut extended to any type of new solar battery.
This scheme will run till April 2027, after which time, the VAT rate will rise to 5%.
Home Energy Scotland
Homeowners in Scotland can also benefit from an interest-free loan as part of the Home Energy Scotland scheme.
Through the scheme, you can receive a grant of £5,000 for a new solar battery, and even a solar panel grant of £6,000. The repayment period ranges from 5-10 years.
Are there hidden costs of a solar battery storage?
The overall cost of solar battery storage greatly depends on your choice of installer and the local market conditions. In times of high demand for batteries, installers might increase the prices for the available units.
Additionally, there are maintenance and service costs associated with the solar and battery systems. Here is a breakdown of the average costs for different components:
| System component | Average costs |
|---|---|
| Solar battery | £2,500 – £10,000+ |
| Solar panels (inc. installation) | £5,000 – £15,000 |
| Labour costs (per day) | £600 – £1,000 |
| Maintenance costs: cleaning panels | £10 / panel |
| Maintenance costs: annual service | £100 – £200 |
How much can you save when you install solar batteries?
If you’re wondering “Is it worth it getting solar panels?“, then maybe a solar battery will help convince you of their benefits. That’s because incorporating a solar battery into your system can lead to a 70% reduction in your electricity bills, according to the Energy Savings Trust.
These otential savings from a solar battery can be gained from the electricity generated by your panels, the surplus electricity from your battery, and earnings from grid service tariffs such as the Smart Export Guarantee (SEG).
Through SEG, you may receive payment for any excess stored electricity that you feed back to the grid. The income you receive in return depends on the tariff provider, usually ranging from 1-20p/kWh.
The table below shows the potential savings you could make by integrating a solar battery into your solar panel system, through the SEG. These estimates are based on an example tariff rate of 5.5p/kWh.
| House size | Solar panel system | Total savings including SEG payment | Total savings without SEG |
|---|---|---|---|
| Small; 1-2 bedrooms | 2 – 3kW | £555 | £515 |
| Medium; 2-3 bedrooms | 3 – 4kW | £855 | £770 |
| Large; 3-4 bedrooms | 5 – 6kW | £1,230 | £1,175 |
For a more accurate assessment of the potential savings you can make, we strongly recommend consulting with a professional installer.
How to get the best solar battery prices in the UK
To ensure you’re getting the best solar battery prices possible, it’s best to compare offers from various solar installers and pick out the best deal. Incorporating a solar battery into a new solar panel system installation will also help keep costs down.
While you should certainly shop around for a good deal, you also want to make sure you’ve found the best installer for the job. Keeping this in mind can result in endless hours of searching, especially if this is your first time looking for local solar panel installers.
This is where Household Quotes can help you. We have a whole network of vetted solar professionals ready to offer you their tailored quotes. It’s simple, you fill in the form, then we’ll connect you with up to 4 installers based on your details. You can then freely compare their quotes and choose the one you’d like to work with.
Our quotes are completely free and you’re under no obligation to accept any of the quotes you receive. Click the button below to get started.
- Quotes from local installers
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- Save up to £1005 per year
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Ciaran is a content writer at Household Quotes. He has become an expert in energy saving and eco-conscious living which he uses to create informative content for Household Quotes readers.