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Battery Storage

For the Home and Office

Specialist electrical services for your home and business

Home Battery Storage Systems

For many of our Solar PV customers, getting a home battery system is the obvious next step.

Battery storage is a great way of storing surplus solar power ensuring it can be used during high consumption times and prevents the power going, that way making your property even more self-sufficient.

Battery storage can also be used to charge up from the grid during low-cost periods, normally from midnight to 7am, like the old economy 7 tariff times.

This can then be discharged back into the property during the peak times when everyone is using all the electrical equipment within the home.

Some home batteries now come with the ability to ride through power cuts, so your supply of electricity is entirely secure.

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GivEnergy Battery Storage System

We can supply and install a range of batteries from GivEnergy, including the GIV-Bat-ECO 2.6, and the GIV-Bat 9.2 Unlimited. These batteries are:

  • Available wall mounted with rubber legs
  • Delivered with a ten-year warranty
  • Designed with active cell balancing
  • Designed with LifeP04 Cell Technology
  • Manufactured with at least 90% depth of discharge

Sonnen Battery Storage System

We are also approved partners with Sonnen battery that comes enclosed in a cabinet that allows for a stylish and sleek installation meaning it does not look out of place in an office or garage.

The system is robust and comes with a fantastic 10-year warranty to give you piece of mind that the system will stand the test of time. The expected working life of the system is over 20 years!

The Sonnen system comes in either a AC coupled or Hybrid version and in both single and three phase. There is also the option to add the Sonnen protect that will allow you to draw power from the system during a power cut.

The Sonnen system is built in Germany and comes with the expected German quality, we have been over to Germany for a tour around their factory and it was quite extraordinary!


What our customers say about us…

Steven Brame
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Wonderful company, sorted out all our problems, of which there were many, very friendly and skilled electricians. Used them twice having had works bodged by another, if you want a job done right, use this firm.
Janet Bridge
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The most efficient and professional service I have received in a very long time, Thank you so much Dan and Jim.
Ellie Minton
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We recently used The Big Green Electrical Company for our home studio conversion. Dan was reliable, professional and helpful from the very beginning, giving us advice on what would work best and we trusted his expertise and knowledge. We are extremely happy with the results and will most definitely be using Dan again for any future work!
Keith Hasemore
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Dan & Jim, very professional. Pleasant experience. Would not hesitate to request their services in the future.
Wendy Premm-Jones
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Dan and Jim did a brilliant job of fitting a new fuse box allowing them to also fit an EV charger. We have used Dan before and he is so professional, always turns up on time, provides accurate quotes with no hidden charges! Would thoroughly recommend The Big Green Electrical Company.
Andrew Coleman
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After a years project of transforming our garden, Dan came to install some garden lightening to complete the final piece of the jigsaw. What a transformation! We are so pleased with the outcome of Dan’s workmanship and also his manner. He was informative, pleasant, kind, hardworking and open to suggestions. We could not be more pleased with the outcome and would definitely highly recommend Dan and his company.
Cherry Trees
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Great work by Big Green Electrical to help transform one of the rooms at our East Clandon respite care home for children with complex disabilities. High quality work, fast, responsive and highly professional. Thank you.
Lifetime Shutters Ltd
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Very professional on estimating the job, good quality work and also good response on issues after the install. Well done The Big Green! We will recommend and use again.
Michael Sutton
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Absolutely fantastic , neat and tidy, really know their stuff….and really nice people to work with… you probably cannot find better people.

Our Other Services


Commercial Solar Panels

A commercial solar panel system can generate electricity from the sun’s rays, providing a renewable and sustainable source of power.

Domestic Solar Panels

Home solar panel installations won’t just save money on your electric bill every time you turn on a light or fire up your laptop. It will also boost the value of your home significantly.
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EV Chargers

We’ll recommend the best EV charger installation equipment for your home or office to help you enjoy a cleaner, more energy-efficient future.
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Commercial Electrician

Electrical safety and reliability are essential for owners and managers of commercial premises so it’s important to choose an NICEIC Approved contractor.
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Electrical Testing, Inspection & EICR

We inspect and test electricals to BS 7671 standards to ensure your residential and commercial properties are safe and fully compliant.
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Electrical Maintenance

Get your electrical problems resolved quickly and expertly. As we’re NICEIC Approved, you can relax, knowing our repair work is fully guaranteed.


Batteries enable you to capture surplus electricity and store it for later use. Usually, batteries are connected to an on-site energy generation system, such as solar panels. During the day, if your solar panels produce more electricity than your property needs, the extra electricity is automatically diverted to your battery. Once the battery is fully charged, any surplus electricity is automatically exported to the grid so you can be paid for it. During the night, when your solar panels are not producing electricity, your stored electricity is used to power household appliances.

Put simply, yes! Battery storage increases your energy bill savings because it means more of your electricity comes from your solar panels (for free) and less comes from the grid (which you have to pay for). On top of that, any electricity you do buy from the grid will be cheaper because you can draw it out during off-peak times (when it’s least expensive) and store it for later use. Battery storage does not affect Smart Export Guarantee (SEG) payments – you can still be paid for selling any surplus solar electricity you don’t use back to the grid. And that’s all before you’ve even considered the numerous other benefits – a reduced carbon footprint, improved energy security and increased independence to name just a few.

Our batteries are simple to charge and maintain. They require no fuel or cleaning and pretty much run themselves. There are certain things you can do to maximise the health of your battery. It should be stored somewhere cool and secure, but we will ensure the location is appropriate during battery installation. The way you charge your battery can also affect its performance – for example, you should avoid completely discharging it to 0%. But an integrated battery controller will manage this for you.

The Homeowner's Guide to Choosing a Solar Company

Get our free 10 page guide to discover the questions to ask and mistakes to avoid when choosing a company to install solar panels at your home.