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Case study
David's Solar Battery Install
Installation day
David from Ryall, Dorset, already had a 12-panel solar system and a heat pump installed but was still relying on the grid when the sun wasn’t shining. To take control of his energy use and reduce costs, he contacted Evoflo to design a system that would let him store both solar energy and low-cost overnight electricity. We installed a 16kWh SigEnergy Sigstor battery, integrating it with his third-party inverter to create a seamless, smart energy ecosystem.
Installed in October 2024, the setup now enables David to run his home almost entirely from stored solar and off-peak energy at just 7p/kWh — even through the winter. The savings have been substantial, particularly in colder months when the heat pump would otherwise draw high-cost daytime electricity. Since installation, David has extended his green journey with Evoflo by adding an EV charger, further reducing his carbon footprint. He’s become a true advocate for battery-first energy thinking.
How it works
- Conduct initial consultation and site assessment
- Develop installation plan and confirm schedule
- Complete on-site installation (usually 1-2 days)
- Provide system walkthrough and knowledge transfer
- Ongoing aftercare and support
Customer testimonial
Evoflo helped me run my entire home from solar and cheap overnight energy. I now charge my car, run the dishwasher, and heat my home for a fraction of the cost, especially in winter. The workmanship and advice were first-rate. I’ve halved my energy bills.
David from Ryall, Dorset
Your guide to solar battery storage
What is Solar Battery Storage?
Solar battery storage is an innovative solution that allows homeowners to store excess energy generated by solar panels for later use. Instead of exporting unused solar energy to the grid, you can store it in a battery. This enables you to power your home during the evening or on cloudy days, reducing reliance on the grid and lowering your energy costs.
If you’ve ever asked, “can I use a battery with solar?”, the answer is yes! By using a battery with solar power, you can unlock greater flexibility and long-term savings while making your energy usage more sustainable.
Benefits of Solar Battery Storage
Adding a solar battery to your energy system offers a range of advantages:
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Energy Independence: Store excess solar energy for personal use during peak times or at night.
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Increased Savings: Reduce your reliance on costly grid electricity and maximise the use of your solar panels.
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Optimised Energy Use: Using a battery with solar ensures that no energy goes to waste.
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Sustainable Living: Solar energy storage helps reduce your carbon footprint and promote a greener future.
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Enhanced Efficiency: The best batteries for solar storage are designed to work seamlessly with renewable systems.
Solar storage batteries empower homeowners to take control of their energy usage, offering financial and environmental benefits.
Compatibility with Solar Energy Systems
Most modern solar systems are compatible with solar storage batteries. Here’s what you need to know:
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Solar Panels: Batteries for solar storage integrate seamlessly, enabling you to store excess energy for later use.
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Inverter Requirements: Some systems may require a hybrid inverter or additional upgrades for compatibility.
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Best Battery for Solar Systems: Our expert team can help you select the best solar battery to match your requirements.
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Solar Energy Storage Options: Whether retrofitting or starting from scratch, we offer tailored solutions for your needs.
Not sure if your system is compatible? Contact us for advice on how to integrate solar energy storage with your existing system.
How Solar Battery Storage Works
Understanding how solar storage batteries work is simple:
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Energy Generation: Solar panels generate electricity from sunlight.
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Battery for Solar Storage: Excess energy is stored in your battery instead of being exported to the grid.
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Energy Usage: Use stored energy when solar panels aren’t generating power, such as at night.
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Grid Backup: Any surplus energy that exceeds your storage capacity can still be exported to the grid.
By using a battery with solar panels, you ensure energy availability when it’s needed most, saving money and reducing your carbon footprint.
Tried, tested, and trusted locally
Let's hear from our customers who’ve switched to smarter energy with Evoflo and haven’t looked back.
Fantastic experience
“Fantastic experience with Evoflo—brilliant concept, faultless install, and top-tier customer service. Extremely knowledgeable and diligent. Already seeing big savings and recommending them to friends and family.”
Andy
North Dorset
First class
“Evoflo installed Sigenergy batteries, inverter, gateway and solar panels. The system is first class—modular, intuitive, and expertly installed. Two months on, my energy costs are down 75%. Highly recommend Evoflo and Sigenergy.”
Andrew
Blandford, Dorset
Tidy and professional
“Evoflo installed a battery system so we can use cheap off-peak renewable energy all day. Our electricity bill is down by two-thirds. The team was lovely, tidy, and professional—we’ll definitely have them back for future sustainability work!”
Anjay
Maiden Newton, Dorset
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Trusted partners
We partner with top names like British Gas, Octopus, and GivEnergy to deliver reliable battery and energy solutions.
FAQs
Can I store both solar energy and off-peak electricity in a battery system?
Yes - combining solar panels with a home battery lets you store free daytime energy, while also charging at night on low-cost off-peak tariffs. This ensures round-the-clock energy at the lowest possible cost.
Is a battery system worth it if I already have solar?
Absolutely. Even with solar, you're still using grid electricity when the sun isn't shining. A battery allows you to store excess solar for evening use and supplement with cheap night-time energy when needed.
Will a battery system help reduce winter energy costs?
Yes - especially when paired with off-peak charging. During winter, you can charge the battery overnight at rates as low as 7p/kWh, then use that stored energy during the day to power heating, appliances, and more - dramatically cutting your bills.