Residential Battery Storage
Use, store or sell your solar energy day or night.
Government-Approved & Certified Installers
5 year installation warranty
VAT Free
Battery storage for your home
Boost the effectiveness of your solar panel system and take advantage of extra energy savings for your home with a battery storage unit.
Battery storage gives you more control over how much energy you use and when by enabling you to store solar power for use during any time of the day or night.
After surveying and analysing your property, we’ll select and install the best technology for your home from one of our trusted, industry-leading partners: Tesla and Sigenergy.
Learn more about our services or book a free consultation with a no-obligation quote.
Benefits of battery storage
Sustainable energy
Store your renewable energy to help reduce your carbon emissions and dependence on expensive fossil fuel prices.
Reliable backup
Stay online when a power cut hits your area, reducing any damage to appliances you had turned on and waste from refrigerated food.
Cost-effective
Release your solar generated energy during peak times or sell your excess back to the grid.
Scalability
Expand your battery system where and when you need to with seamless integration to your existing system.
Installing battery storage solutions across the UK
- Local, independent experts
- Fully accredited (MCS, RECC, NICEIC)
- Trusted by public sector and commercial clients – now bringing that expertise to homes
- Transparent pricing. No hard sell. No gimmicks.
Our team of battery storage and energy specialists have experience supplying installations for Arundel, Chichester, Portsmouth, Exeter and their surrounding areas. If you’re further afield – no problem! We’re happy to travel and provide you the same excellent service for your property as we do closer for properties closer to home.
What our customers say
We’re proud to work with homeowners and businesses across the UK, helping them save energy and money with smart, sustainable solutions. Here’s what some of our happy customers have to say about their experience with Bright Spark.
Recent projects
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The Race to the Bottom in Solar: Why Quality Must Come First
After 15 years working in the energy and renewables sector,…
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Batteries, Not Solar Panels, Are at the Heart of Renewable Energy in 2025 and Beyond
For years, solar panels were the poster child of the…
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Why Sigenergy is Shaking Up the UK Home Battery Market – For the Better
In a residential battery market often dominated by hype, half-truths,…
Battery Storage Packages
Tesla Powerwall 3
From £7,995 (No VAT)
A powerful, standalone battery system for homes with or without solar panels.
What’s Included:
- Tesla Powerwall 3 (13.5 kWh)
- Tesla Gateway 2 for backup power during outages
- Real-time energy monitoring via the Tesla app
- Full installation, DNO application, and certification
Best for: Homes wanting reliable backup power and smart energy storage, whether or not solar is already installed.
SigEnergy SigenStor
From £4,995 (No VAT)
An affordable and flexible battery solution that works with or without solar.
What’s Included:
- Sigenergy modular battery (8 kWh)
- Smart energy tracking via the Sigenergy app
- Compatible with most existing solar systems
- Full installation, DNO application, and certification
Best for: Homeowners looking for an expandable battery system to reduce reliance on the grid.
Powering the future
Bright Spark has been designing and installing renewable energy systems for over 10 years and we love what we do. What started out as a family business has turned into a national enterprise with multiple offices and happy customers generating green energy all over the South of England! Learn more about us.
Since 2011, we’ve designed and installed a wide range of green energy products for residential properties in the local area – from a contemporary smart home in South West London to a minimal and unobtrusive solar array in rural West Sussex.
Thinking about adding a battery to your solar setup?
Battery storage is the perfect way to make the most of your solar energy—cutting your bills, reducing your reliance on the grid, and giving you backup power when you need it most. At Bright Spark Energy, we install high-performance systems from Tesla and Sigenergy that are built to last and tailored to your home.
Why should I install a battery with my solar panels?
Adding battery storage to your solar setup lets you use more of the energy you generate, reducing your bills and reliance on the grid. It also gives you access to backup power in an outage. With a battery, your solar power works for you—day and night.
Can I add a battery later if I already have solar panels?
Yes—our Tesla and Sigenergy battery systems can be retrofitted to most existing solar arrays. We’ll assess your current system and design a battery solution that integrates smoothly with your setup.
How long do the batteries last?
Our premium batteries are designed for long-term performance. After 10 years, they typically retain over 70–80% of their original capacity.
Will the battery work during a power cut?
Yes—if you opt for a system with backup functionality. Your battery will automatically kick in to power essential circuits like lighting, refrigeration and internet, helping you stay safe and connected even during outages.
What size battery do I need?
That depends on how much energy you use and how much you generate. We’ll work with you to find the ideal capacity, with flexible options that can scale up as your needs grow.
Can I sell excess energy back to the grid?
Yes! Through the UK Government’s Smart Export Guarantee (SEG) scheme, you can earn money by exporting unused solar energy back to the grid. We’ll help you set up your system to take full advantage of this opportunity.
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