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Solar storage

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Solar Battery Storage UK

Solar battery storage allows you to store excess energy generated by your solar panels and use it when you need it most. Our solar battery solutions help maximise the value of your solar PV system by allowing stored electricity to be used during evenings, overnight or when solar generation is lower.

If you’re researching how battery storage works, the different battery technologies available and whether battery storage is right for your home, read our Complete Guide to Solar Battery Storage.

We supply solar storage solutions for homes, businesses and off-grid applications, including lithium batteries, battery systems, inverters and essential components. Whether you are adding storage to an existing solar installation or creating a complete renewable energy system, we can help you choose suitable equipment.

Why Choose Solar Battery Storage

Adding battery storage to a solar PV system provides several benefits:

  • Store unused solar energy for later use
  • Increase your energy independence
  • Reduce reliance on electricity from the grid
  • Provide backup power during interruptions
  • Improve the overall efficiency of your solar installation

Solar batteries allow you to make greater use of the electricity your panels generate instead of exporting unused energy.

How Solar Battery Storage Works

A solar battery storage system works by storing electricity generated by your solar panels during daylight hours.

The process is:

  • Solar panels generate electricity from sunlight
  • The inverter manages power flow between your solar system and battery
  • Excess energy is stored in the battery
  • Stored electricity is used when required

This allows you to use more renewable energy throughout the day and night.

Choosing the Right Solar Battery

The correct battery depends on your energy requirements, solar system size and intended use.

Important factors include:

  • Battery capacity (kWh)
  • Daily electricity usage
  • Solar panel output
  • Backup power requirements
  • Compatibility with your inverter

Our range includes battery storage solutions suitable for residential, commercial and off-grid solar installations.

Lithium vs Lead Acid

Feature Lithium (LiFePO₄) Lead Acid
Lifespan Excellent Moderate
Efficiency High Lower
Maintenance Very Low Higher
Weight Lightweight Heavy
Cycle Life Thousands of cycles Fewer cycles
Best For Homes, hybrid & off-grid Budget off-grid systems

Solar Batteries for Different Applications

Solar battery storage is suitable for:

  • Homes with existing solar panels
  • New solar PV installations
  • Off-grid solar systems
  • Garden offices and workshops
  • Farms and commercial buildings
  • Backup power applications

Battery storage can help create a more reliable and flexible renewable energy system.

What size battery do I need

The correct battery size depends on your household electricity usage, the size of your solar PV system and when you typically use electricity. Choosing the right capacity helps maximise self-consumption while avoiding unnecessary cost.

Can I use battery storage with my existing solar inverter

It depends on the type of inverter already installed. Many existing solar PV systems can be upgraded using an AC-coupled battery storage solution, while others may benefit from replacing the inverter with a hybrid inverter. We can help you choose compatible equipment for your installation.

Can I add battery storage later

Yes. Many existing solar PV systems can be upgraded with battery storage. Depending on your current installation, this may involve an AC-coupled battery system, a DC-coupled solution or a hybrid inverter.

Are lithium batteries better than lead acid

Lithium batteries offer higher efficiency, longer service life, faster charging and require very little maintenance. Lead acid batteries can still be suitable for some off-grid applications where lower upfront cost is the main consideration.

Can batteries charge from off-peak electricity

Yes. Many modern battery storage systems can charge using lower-cost off-peak electricity tariffs, allowing stored electricity to be used during more expensive peak periods.

How long do solar batteries last

Most modern lithium battery systems are designed to last for many years. Typical manufacturer warranties are up to 15 years, although lifespan depends on usage, charging cycles and operating conditions.

Types of Solar Battery Storage

Several battery technologies are available, each offering different advantages depending on your energy requirements, budget and intended application. Choosing the correct battery type helps maximise system performance and long-term reliability.

Lithium-Ion Batteries

High efficiency, compact design and long service life make lithium-ion batteries the preferred choice for most residential solar installations.

LiFePO₄ Batteries

Lithium Iron Phosphate batteries offer excellent safety, long cycle life and outstanding reliability, making them ideal for frequent daily charging and discharging.

Home Battery Storage Systems

Complete battery storage systems designed to integrate with domestic solar PV installations.

Off-Grid Battery Storage

Suitable for cabins, workshops, agricultural buildings and properties without a mains electricity connection.

Can battery storage work without solar panels

Yes. Some battery storage systems can be charged directly from the electricity grid, particularly when using off-peak tariffs. Many homeowners install battery storage first and add solar panels later, while others use batteries to store cheaper overnight electricity for use during the day.

Complete Solar Battery Storage Solutions

Alongside solar batteries, we supply the supporting equipment needed to complete your battery storage system with compatible:

Our battery storage range has been selected to provide reliable, efficient energy storage for domestic, commercial and off-grid applications. We also supply compatible inverters, battery management equipment and accessories to help you build a complete renewable energy system.

Whether you need additional storage capacity or a complete solar energy solution, Solar PV Systems can provide expert support and suitable products.

Benefits of Battery Storage

Solar battery storage offers several long-term advantages for homeowners and businesses looking to maximise the value of their renewable energy system. By storing surplus electricity for use later, battery systems improve energy efficiency while reducing dependence on grid electricity.

  • Increase self-consumption of solar energy.
  • Reduce electricity bills.
  • Improve energy independence.
  • Support smart tariff optimisation.
  • Provide backup power capability (where supported).
  • Reduce household carbon emissions.

Build Your Solar Energy Storage System

Solar PV Systems supplies reliable solar battery storage equipment across the UK. From individual batteries to complete renewable energy systems, our team can help you select the right solution for your solar installation.

Related Solar Guides

Learn more about renewable energy by exploring our expert guides covering solar PV systems, battery storage, off-grid solar, mounting systems and solar hot water technologies.

Why Buy Battery Storage from Solar PV Systems

With over 20 years of experience supplying renewable energy equipment throughout the UK, Solar PV Systems offers a carefully selected range of battery storage products, hybrid inverters and solar accessories from trusted manufacturers.

Whether you’re upgrading an existing solar PV system, adding battery storage to an existing installation or designing a complete renewable energy system, our experienced team can help you choose compatible batteries, inverters and accessories to suit your project.

From individual battery components to complete energy storage solutions, we supply reliable products backed by expert technical advice to help you maximise the performance of your solar PV system.