Top Solar Battery Storage Systems

Solar batteries allow you to reduce your energy bill by up to 35%.

A home solar battery system will cost around around £1,500 - £6,000. A 4kW solar panel and battery will cost around £10,000 - £12,000.

Compare prices of solar panels and battery systems using the form above.


What's in this Guide to Solar Batteries?

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How does Solar Battery Storage Work?

what is solar battery storage

A solar battery storage system allows you to store the electricity generated by your solar panels so that you can use it another time. This way, you don’t waste any of the valuable electricity you produce when you don’t need it.

If you already have solar panels, or are planning to get them, installing a solar battery storage system can therefore help you to maximize the amount of solar electricity that you use.

Solar panels can only produce electricity when there is sunlight. This creates a problem when it is dark or cloudy and you need energy to power your home. In these circumstances, you will often need to buy electricity from your energy provider as your solar panels won’t be producing electricity for you to use.

With a solar battery storage system however, you can avoid this problem. By storing any unused electricity generated by your solar panels, you can have a constant source of free electricity powering your home. This means that you won’t need to buy as much electricity from your energy provider.

This will not only improve the efficiency of your solar panels, but will help to further cut the amount you spend on your energy bills. Solar battery storage systems can therefore save you a lot of money in the long-term.

93% of homeowners we surveyed think that solar batteries are a good investment*

*Based on a survey we conducted in January 2018 of 310 UK homeowners with a solar battery storage system.


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What are the Best Solar Batteries?

Despite being a relatively new product, the solar battery storage industry is growing rapidly with more and more companies manufacturing solar batteries each year.

Solar batteries range in size from a microwave up to a small fridge. Smaller batteries can be mounted onto your wall, whilst larger batteries are often floor-standing.

Obviously the larger the solar battery, the more unused electricity can be stored. The storage capacity of solar batteries typically ranges from 1kWh to 14kWh.

Most homeowners will only need one solar battery. For those looking to maximize their storage capacity however, some companies also produce ‘stackable’ solar storage systems which comprise of several batteries.

Some of the best solar battery manufacturers include E.On, Moixa, Powervault, Samsung, Solarcentury and Tesla. The table below compares the key features of some of the best solar batteries* available in the UK:

Battery Name

Size

Mounting

Storage Capacity

Warranty

E.On Storage
45cm x 43cm x 10cm
Wall-mounted
2.4kWh, 9.8kWh
10 years
Moixa Battery
50cm x 30cm x 24cm
Wall-mounted
2kWh, 3kWh
10 years
Powervault Lithium-ion G200
50cm x 58cm x 82cm
Floor-standing
2kWh, 4kWh, 6kWh
10 years
Samsung Energy Storage System
100cm x 27cm x 68cm
Floor-standing
3.6kWh
5 years
Solarcentury Solar Battery Storage
45cm x 40cm x 12cm
Wall-mounted
3.3kWh
10 years
Tesla Powerwall
76cm x 115cm x 16cm
Floor-standing
14kWh
10 years

*all these solar batteries are designed to work with the grid


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How Much does a Solar Battery Cost?

The cost of solar battery storage systems typically range from just over £1,500 up to £6,000. From a survey that we conducted in January 2018 on 310 UK homeowners with a solar battery, 86% paid less than £4,000 for their solar battery. Obviously the bigger the storage capacity of a solar battery, the more it will cost.

Some installers also offer combined solar panel and battery storage deals. For example, a 4kW solar panel system with a 4kW solar battery typically costs between £10,000 and £12,000.

The table below shows you the typical price of the best solar batteries available in the UK:

Battery Name

Typical Price

E.On Storage
£4,500
Moixa Battery
£2,950+
Powervault Lithium-ion G200
£2,550 - £4,550
Samsung Energy Storage System
£5,600
Solarcentury Solar Battery Storage
£3,100 - £5,000
Tesla Powerwall
£6,000


We recommend that you compare quotes from at least three suppliers to find the best price. Fill out the form at the top of this page and we can put you in touch with the best solar battery storage companies in the UK.


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How much do solar panels cost?



Pros and Cons of Solar Battery Storage Systems

Pros

Enable you to use more of the solar electricity you generate

Are very low maintenance

Reduce your spend on energy bills by up to 35%

Can be installed into homes that already have solar panels

Large storage capacity


Cons

Expensive upfront cost

Can require a large amount of free space in your home to be installed

Likely to need replacing during the lifetime of your solar panels


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Installing Battery Storage for Solar Panels

When installing a solar battery, it is very important that you fit a battery with the correct voltage capabilities. A wrong sized battery can be very dangerous. It is therefore recommended that you always seek professional help when choosing and installing a solar battery storage system.

There are two different types of solar batteries: DC battery systems and AC battery systems. DC batteries are connected directly to your solar panels, before the electricity meter. This means you will not need an additional inverter installed.

DC batteries tend to be installed at the same time as solar panels. They can be retrofitted to existing solar panels, although the installation process is a lot more complex.

AC batteries are not connected directly to your solar panels - instead, they are connected to your solar panels via the electricity meter. This means you will need an additional inverter installed which converts DC electricity into AC electricity that you can use to power the appliances in your home (and then back to DC to be stored in your battery).

If you are installing a solar battery to existing solar panels, you will most likely be offered an AC battery storage system as they are easy to retrofit.

Make sure your solar battery installer is signed up to the Renewable Energy Consumer Code (RECC). This ensures that they work to a high standard, and protects you should you need to make a complaint about your installer.


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