Solar Battery Storage Price

Understanding the solar battery storage price for your home is one of the key steps in deciding whether adding a battery is right for you. On this page, we explain average solar battery storage prices in the UK, what affects the final cost, and how you can secure better value for your home.

Whether you’re adding a battery to an existing solar PV system or installing both together, knowing what influences the battery storage price helps you plan with confidence.

What’s the Average Solar Battery Storage Price in the UK?

In 2025, the average price of a fully installed residential solar battery storage system in the UK was £6,819¹.

That figure typically includes:

  • Battery unit

  • Inverter (if required or upgraded)

  • Installation and labour

  • System configuration and certification

The exact solar battery storage price for your home will depend on how much energy you want to store, whether you already have solar panels, and how you use electricity throughout the day.

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¹Average installation price data is based on domestic battery storage installations recorded in the MCS Dashboard between January and December 2025 in the UK.

Making Solar Battery Storage More Affordable for You

With Switch Together, homeowners can access group-buying rates on solar battery storage, helping make prices clearer, fairer, and more affordable.

By installing battery storage as part of a group-buying scheme:

  • Installers offer more competitive pricing

  • Costs are transparent, with no unexpected extras

  • Our vetted installers help you choose the correct battery storage capacity

Once you factor in group savings and any available incentives, the upfront solar battery storage price can be significantly lower than buying independently.

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Solar Battery Storage Price per kWh

When comparing solar battery storage prices, looking at the price per kWh can be one of the clearest ways to understand value.

In 2025, MCS data shows that the average installation cost for home battery storage in the UK was £1,413 per kWh  for a typical residential system¹.

Typical Solar Battery Storage Prices by Capacity (UK Market)
Battery capacity Average installation cost
5 kWh £7,065
8 kWh £11,304
10 kWh £14,130
12 kWh £16,956

Prices are based on the 2025 MCS average installation cost of £1,413 per kWh. Actual solar battery storage prices may vary depending on property type, existing solar setup, inverter requirements, and installation complexity.

Why Do Solar Battery Storage Prices Vary?

No two homes use energy in the same way. Several factors influence the price of solar battery storage for your property.

Key factors that affect battery storage prices

Battery size (kWh)
Larger batteries store more energy but come at a higher upfront cost. For example, a 10kWh battery storage price will be higher than a smaller 5kWh system, while a 20kWh battery storage price reflects even greater capacity.

Household energy use
Homes with higher evening and overnight electricity use benefit most from larger battery systems.

Existing solar panels
Adding battery storage to an existing solar PV system may require inverter upgrades, which can affect the total price.

Battery technology and brand
Different battery chemistries and manufacturers vary in cost, lifespan, and performance.

Installation complexity
Location, wiring routes, and electrical upgrades all influence labour costs.

Installer quality and accreditation
MCS-certified installers may not always be the cheapest, but they provide long-term reliability, warranties, and compliance.

Get Accurate Solar Battery Storage Prices for Your Home

When homeowners search for solar battery storage prices, what they really want to know is simple: how much will it cost me?

As a rough guide:

  • Smaller households often need lower-capacity batteries

  • Larger households benefit from systems such as 10kWh battery storage or more

  • Homes installing solar panels and battery storage together can optimise system size and cost

That’s why online averages can only go so far. The most accurate solar power storage battery price comes from a tailored assessment that considers your energy use, existing system, and future plans.

Switch Together guides you every step of the way — from assessing suitability to securing competitive solar battery storage prices through trusted installers.

HPUK Install photo 8 Oliver James Creative

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