Domestic battery storage installation mounted on an exterior brick wall

Residential battery storage

Home battery storage, with or without solar

Store spare solar power, charge on a cheaper tariff or keep selected circuits running with a system designed for backup.

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How would you use your home battery?

Add storage to existing solar

Use more of the electricity your panels already generate. We’ll check your existing inverter and metering.

Install a battery without solar

Charge during cheaper tariff periods and use stored energy when electricity costs more.

Prepare for power cuts

Tell us what you need to keep running. We’ll assess the loads and specify compatible backup equipment.

Compare home battery systems

Tesla Powerwall 3

An integrated battery and inverter with optional expansion storage.

Sigenergy SigenStor

A modular system with single-phase and three-phase options.

SolarEdge Home Battery

An option for homes with a compatible SolarEdge inverter.

Fox ESS EVO 10

Fox ESS EVO 10 all-in-one home battery

10.24 kWh battery with a built-in 5 kW hybrid inverter.

Home battery installation

How we install your home battery

01

Home survey

We review your electricity use, tariff, existing solar and where the battery could go.

02

System design

We size the battery and inverter around your usage and discuss which circuits you’d like to keep running in a power cut.

03

Quote approval

You’ll receive a clear specification, a written quote and an estimate of potential savings.

04

Network application

We handle the electricity network operator’s application or notification, as required for your system.

05

Installation and handover

We install, test and commission your battery, then show you how to monitor it and set its charging schedule.

Need more information

Frequently asked questions

Can I install a home battery without solar panels?

Yes. A battery can charge from the grid. If you have a time-of-use tariff, you can charge during cheaper hours and use that energy when rates are higher.

Can I add a battery to my existing solar panels?

Often, yes. We’ll check your inverter, metering and electrical supply to see which batteries are suitable.

How big a battery do I need?

We’ll look at how much electricity you use and when you use it. Battery capacity in kWh tells you how much energy it stores. Inverter power in kW tells you how much it can supply at once.

Will my battery work in a power cut?

That depends on the system and how it’s installed. If you want backup, we’ll work out which circuits you need to keep running and specify the equipment for them.

How much could I save?

We estimate savings from your electricity use, tariff and any solar export payments you’d give up by storing energy instead.

Request a battery quote

About us

The green energy experts

Daniel Evans founded Big Green Electrical in 2017. Our team helps homeowners choose and install solar, battery storage and EV charging systems that suit how they use electricity.

Qualified
Our electricians hold City & Guilds qualifications. We’re NICEIC Approved Contractors.

Experienced
We install home battery systems with new or existing solar, as well as standalone storage.

Knowledgeable
We’ll help you compare batteries, tariffs and backup options for your home.

Outdoor lighting installation by Big Green Electrical

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