Install a Solar Battery Storage System

Store more of your own clean energy, cut your bills, and rely less on the grid — with exclusive savings through our group-buying scheme.

Previously known as Solar Together.

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How Solar Battery Storage Works

A home battery stores the excess electricity your solar panels generate during the day. You can then use that stored energy in the evenings, on cloudy days, or whenever your home needs extra power.

It’s one of the simplest ways to get more value from your solar — and reduce how much electricity you buy from the grid.

Benefits of Solar Battery Storage

A modern solar battery doesn’t just store energy — it helps you use it more intelligently, unlocking extra savings throughout the day.

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Lower Energy Bills
Capture excess solar energy and use it later to power your home, cutting your reliance on peak-time grid electricity.
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Energy Independence
Rely less on the grid and more on the energy you generate, protecting yourself from rising energy prices.
Climate Change
Reduced Carbon Footprint
Storing your solar energy means less reliance on fossil-fuel power, helping your household cut CO₂ emissions year after year.
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Use Smart Tariffs
Charge your battery using cheaper overnight tariffs and use that low-cost power during the day.
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Power Your EV
If you have an EV, a home battery can support smarter, cheaper charging with stored solar energy or low-tariff electricity.

Types of Batteries for Solar Energy Storage​

Choosing the right battery helps you get the most from your solar system.

  • Lithium-ion batteries – The most common choice for UK homes. Long-lasting, compact, and efficient.

  • Lead-acid batteries – Affordable, but bulkier and less efficient.

Switch Together only works with high-quality lithium-ion batteries, tested for safety, reliability and maximum efficiency.

What Makes a Complete Solar Battery System?

A modern home battery works as part of an integrated energy storage system, with components such as:

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Battery Cell Unit
Stores electricity for later use.
Energy Management
Battery Management System (BMS)
Monitors production, usage, and battery levels, and automatically optimises performance.
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Inverter
Converts stored electricity into usable power for your home — or back to the grid.

How Much Does Solar Battery Storage Cost?

A typical UK home battery system costs around £6,819¹, depending on battery size, brand and setup.

With Switch Together’s group-buying scheme, you can unlock exclusive pricing and reduce installation costs by joining other households in your area.

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

See Battery Storage Prices
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How to Save on Battery Storage Installation

Enjoy a greener home with help from trusted installers. With support from Switch Together, it's easier and more affordable than ever.

By coordinating interest from many households, we secure competitive rates from vetted installers — making renewable energy upgrades more accessible and affordable.

What is Group buying?
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Solar Battery Storage Installation

Whether you’re installing a battery alongside solar panels or retrofitting an existing system, Switch Together makes it simple, affordable, and backed by trusted UK installers. You get a high-quality installation and peace of mind from start to finish.

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MCS Accredited

All installers are MCS-accredited and members of a recognised Consumer Code

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Rigorous Qualification

Backed by quality standards, warranties and protections

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Switch Together Approved

Approved through Switch Together’s rigorous qualification process

Retrofitting Your Existing Solar Panels with a Battery

Already have solar panels? Add a battery to store your excess energy and make your home even smarter. 

How retrofit works:

  • Your panels charge the battery with any surplus solar generation

  • You use more of your own clean energy instead of exporting it

  • You cut bills further — with no need to replace your existing solar setup

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Get a Complete Solar Battery System.

Switch Together makes it simple — from your first click to full installation.

Get Started
Green Energy Contracts
1. Register Online

Tell us about your home, energy usage, and whether you already have solar panels.

Personal Offer
2. Receive Your Personal Offer

See your recommended battery size, projected energy savings, and details of your installer.

Roof Survey
3. Home Survey

An accredited installer assesses your property for optimal battery placement and performance.

Installation
4. Custom System Design

Your installer will design a setup that maximises efficiency — whether it’s a new solar system or a retrofit.

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5. Installation & Support

Trusted installers fit your system safely and provide full warranties, aftercare and monitoring.

What Other Homeowners Think

Hear from households that installed solar battery storage with Switch Together.

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Ellis, Liverpool
"As a wheelchair user, I rely on charging my wheelchair overnight, and this battery system gives me that freedom."
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Robert, Wiltshire
"Using solar and our battery setup, we can see exactly how much energy we have in excess and when to use it. It helps us save money and make the most of what we produce."
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Patricia, Wiltshire
"Since having the solar panels and the battery storage, my bills have gone down by at least 50%. I'm extremely happy about that."

Thinking About Home Battery Storage?

Upgrade to cleaner, smarter energy with Switch Together.

 

Register to receive your free personal offer.

Get started here

Frequently Asked Questions About Solar Battery Storage

How Much Can a Home Battery Save on My Energy Bills?

Most households save an extra £300 a year from added battery storage, and some save even more when combining solar with off-peak charging.
You save by:

  • Using more of your own solar instead of buying from the grid

  • Charging the battery overnight on cheaper tariffs

  • Reducing peak-time electricity costs

In your offer, we’ll show your estimated annual savings based on your real usage.

Can I Add a Battery to My Existing Solar Panels?

Yes — most homes can add a battery to an existing solar system.
It works by connecting the battery to your existing inverter or adding a small additional unit if needed.

We’ll check your current setup during your assessment and recommend the best option.

What Size Battery do I Need?

It depends on your home and how you use energy.
Most households choose a battery between 5–10 kWh. You may need:

  • 5–7 kWh if you’re a smaller household or have modest energy use

  • 8–12 kWh if you use most energy in the evenings or have an EV

  • 12 kWh+ if you want maximum bill savings or future-proofing

Your personalised offer will recommend the ideal size for your home.

How Long Does a Solar Battery Last?

Most modern home batteries last 10–15 years before their capacity starts to reduce.
All systems we offer come with a 10-year manufacturer warranty as standard.

With normal daily use, you can expect reliable performance for well over a decade.

Learn More About Battery Storage

Read our expert guides on solar battery storage before you make the switch. Get the latest information so you can make informed choices about your system.

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Benefits of Solar Battery Storage

Your solar panels work hard while you’re out, soaking up the sun and generating clean electricity....

Battery storage