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Last updated: 15 February 2024

Solar Battery Prices in the UK (2024)

Solar Battery Costs UK

As energy prices continue to fluctuate, UK homeowners are always looking for ways to reduce their energy bills. One of the ways to do this is to have a solar battery installed. This device allows you to store the electricity generated by your solar panels to use at a later time. 

This means that whenever you have to use more energy, such as in the winter months, you can comfortably fall back on the electricity in your solar battery storage to avoid overspending on your energy bills. 

If you want to transition to a cleaner energy source and think that solar power could be the way forward for you, keep reading to find out more about solar batteries. In this article, we address the following points: 

  • How much solar battery storage costs
  • What affects the cost of solar battery storage
  • How much you can save with a solar battery
  • Which solar battery grants are available
  • How to find the best solar battery prices

Have you decided you want to install a solar battery for your home, but are not sure where to find an expert to help you? Thankfully, you don’t have to look any further than our network of reputable installers. We have researched engineers across the UK to make it easy to find one in your area who can assist you with installing your new solar battery storage.

You will not have to worry about wasting hours on reading reviews and comparing installation services. Instead, all you need to do is fill in our simple form in 30 seconds to request quotes from up to 4 local engineers. Our service is not only extremely quick, it is also completely free! 

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Solar battery prices in the UK

Currently, the solar battery price in the UK ranges from around £2,500 to £12,500. The exact cost for your home will be determined by the solar battery capacity you need. To give you an indication of the cost of different solar batteries depending on their capacity, we have created an overview of their estimated prices below:

Solar battery prices
Battery capacity (kWh)Solar battery price
3£2,500 – £4,000
5£3,500 – £5,000
10£5,000 – £7,500
15£7,500 – £10,000
20£10,000 – £12,500

As you can see, the solar battery storage price varies per capacity. Because every housing situation is different, it requires individual calculations to determine the precise cost. You will need to consult a specialist to find out what solar battery capacity is the most suitable for your energy consumption requirements. 

Furthermore, you will also have to account for the installation costs involved in fitting a new solar battery storage for your home. These can be anywhere from £500 to £1,500, depending on which solar installer you choose to work, the complexity of the installation, and other factors such as the battery capacity. We’ll walk you through each factor in the next section and also give you a tip that can help you save time and money when looking for a solar installer.

What affects solar battery costs?

The main factors that will influence the total cost of your new solar battery are the type of solar battery you choose, the capacity of the solar battery, its lifecycle, and the costs involved in the installation process

Factors solar battery costs

At the same time, the cost of having a solar battery installed in your home can also change depending on whether you are purchasing it together with your solar panels. In this case, you might be spending less on your new solar battery installation.

To determine the exact costs for your situation, however, you will want to consult a specialist. You can also read our guide to learn more about the number of solar panels you may need, according to your household consumption habits: “How Many Solar Panels Do I Need?

Solar battery type

The chemistry of the battery is something you’ll need to consider, as it will impact the lifespan of your solar battery storage, which in turn affects your energy expenses. The solar battery types available to UK homeowners today are:

  • Lead acid solar batteries
  • Lithium-ion solar batteries
  • Nickel-cadmium solar batteries
  • Nickel-metal hydride solar batteries 

You can learn more about how these solar batteries work, how much they cost, and what you can expect to gain from them below.

Lead-acid solar batteries

lead-acid solar batteries

Lead-acid is currently the cheapest solar battery storage option. One of these solar batteries costs around £2,000 for a battery with a 4kWh storage capacity. They have the longest history and are reliable.

They do, however, have a shorter lifespan in general, as well as a lower depth of discharge, meaning you’ll need to replace the batteries more often than other types. The good news, though, is that they are recyclable, so it can be a fairly environmentally-friendly process.

Lithium-ion solar batteries

lithium-ion solar batteries

Lithium-ion solar batteries are the most mainstream solar batteries. They don’t need much maintenance to keep running and they have a longer life cycle of 4,000 cycles in comparison to the 1,800 of a lead acid solar battery. 

In terms of costs, they are more expensive than the lead acid batteries, as they cost around £4,000 for the same 4kWh storage capacity. You should also bear in mind that they need to be installed by a professional to reduce any possible hazards, as they have a higher fire risk than other solar batteries.

Nickel-cadmium solar batteries

nickel-cadmium solar batteries

These batteries are durable and can work at extreme temperatures, unlike some other variants. They are banned in some countries as the cadmium is toxic, so they might not be the best choice for everyone.

Nickel-cadmium solar batteries are also a more expensive option, as their estimated price is somewhere around £4,000 for a 4kWh capacity battery. 

Nickel-metal hydride solar batteries

nickel-metal hydride solar batteries

Boasting a long life and low discharge rate, nickel-metal hydride batteries are able to charge and discharge at temperatures below 0°C and above 60°C. This means that they are good options for homes subjected to harsh weather conditions.

In terms of price, the cost of these appliances ranges from £2,500 to £3,000 for a 4kWh battery capacity.

Solar battery capacity (kWh)

The solar battery capacity is how much energy is generated by your solar panels the unit can store for future use. Typically, the higher the capacity, the higher the price of the solar battery. You should also bear in mind the capacity of your solar panels, as well as the solar panel price in your calculations. 

As you can see in the table above, solar batteries with a lower capacity like 3kWh cost somewhere between £2,500 – £4,000, while those with a higher capacity of 20kWh cost around £10,000 – £12,500

Solar battery lifecycle

For solar battery storage systems, a cycle is a complete discharge of the battery, followed by a complete charge. Some manufacturers provide an unlimited cycle guarantee. However, most of them offer an estimated figure that can range from 1,800 to 10,000 cycles.

You should give careful consideration to the lifecycle of solar batteries before purchasing one, as it will affect how long you can enjoy your appliance before having to replace it.

While solar batteries with more lifecycles can generally be more expensive, opting for those could help you avoid overspending on switching out batteries that have reached the end of their lifespan. 

Solar battery installation cost

Alongside the costs of the solar battery itself, you also have to keep in mind that there are additional costs involved when it comes to installation. The exact cost for your home depends on factors such as the size of the solar battery system you need, the complexity of the installation, and the installer you choose to work with. 

As an estimate, the installation costs for a solar battery are around £500-£1,500. To find out whether the costs for your home will be on the higher or lower end of this price range, you should contact a specialist who can give you the most accurate total costs for your new solar battery. 

However, to find the best deal on installation costs, you should get information from more than one engineer. This allows you to compare figures and to choose the installer that best fits your budget. 

While this is an important step in having a new solar battery fitted in your home, it can be extremely difficult to find installers to reach out to. You could spend hours looking up installation companies and reading reviews and you still might not find what you’re looking for. 

Fortunately, you can now get the process of finding the best installation costs started in just 30 seconds! By filling in our short form, you can request quotes from up to 4 engineers in your area. You can then easily compare the quotes you receive to find the installer and price range that works best for you. 

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How much can I save with a solar battery?

With the right solar panels and solar battery storage system, you can save a year’s worth of electricity for your home! You will want to make sure that the system has a capacity that matches your energy consumption requirements.

The exact figures of your savings will depend on the storage capacity of your solar battery, the cost of electricity in the UK, as well as the energy consumption requirements of your home. 

At the same time, you will need to consider that the initial cost of having a solar battery installed in your home can be quite high. It might also take some time before you notice an impact on your energy savings. Nevertheless, in time, a solar battery will essentially pay for itself.

Alongside the financial benefits that come with solar batteries, there are also other advantages that you can enjoy with these appliances. However, as with all things, there are also some disadvantages you must take into account before deciding to purchase a solar battery storage system for your home. 

You can learn more about the pros and cons of solar batteries below: 

Are there solar battery grants available

Even though purchasing a solar battery can have quite an impact on your bank account, the good news is that you can lessen the financial blow by making use of the solar battery grants and solar panel grants available in the UK! 

Below you can learn more about the grants you can apply for and about the eligibility criteria you must meet.

The Smart Export Guarantee (SEG)

smart export guarantee

By applying for this grant, you can earn money by transferring parts of the electricity stored by your solar panel battery to the electricity grid. You should check whether your energy supplier allows energy to be exported from your storage system.

0% VAT


If you live in England, Wales, or Scotland, you could benefit from the VAT reduction, which means that you will be paying 0% VAT on solar panels. When installing your solar battery at the same time as your new solar panels, the 0% VAT is applicable to your entire energy system.

Home Energy Scotland Loan

Home Energy Scotland loan

This loan is only available to homeowners looking for solar panels in Scotland as it allows for savings on energy-efficient home improvements. For solar batteries, this means that you could get an interest-free loan of up to £5,000. You can also receive a loan of up to £6,000 for new, efficient solar panels. 

Before applying for any of these grants, you should check that you meet their eligibility requirements. To be eligible for a solar battery grant in the UK today, these are the criteria you must meet:

  • You must be on certain benefits and live on a certain type of property 
  • You must meet the property age requirements
  • You must meet the property condition requirements
  • You must live in a house with electric heating
  • You must work with an energy company that participates in these grants 
  • You might require a home inspection before receiving the grant

Get the best solar battery prices for your UK household

Now that you know a bit more about solar batteries and how they work, you might be ready to have one installed in your home. Naturally, before doing so, you will need to find out more about the total cost of solar panels and batteries in the UK.

Throughout this article, we have provided estimates for the different solar battery types based on their chemical composition and their storage capacity. However, the exact cost will vary depending on the manufacturer you choose. In addition, the total expenses for upgrading your energy system will also be influenced by the installation costs involved in the process. 

Making the exact calculations on your own is nearly impossible. You would have to spend hours comparing prices and installation companies to figure out how much you will spend. Fortunately, there is a much more efficient way to go about finding the best solar battery deal. 

With our help, you can request quotes for solar batteries and installation fees from up to 4 engineers near you in just 30 seconds. Once you receive the information, you can easily compare prices and decide which installer to work with. 

Simply click below, fill in our short form, and find the best deal for your new solar battery!

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Frequently asked questions

Sabria Schouten
Written by Sabria Schouten, Writer

Sabria Schouten is a content writer dedicated to helping readers make informed decisions when it comes to their energy consumption.

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