Battery Storage
Battery Storage Installation in Cornwall
Expertly designed by electricians. Installed with care.
At NS Eco, we combine years of electrical experience with specialist renewable energy knowledge to design and install battery storage systems that are tailored to your home.
Whether you already have solar panels, want to maximise your renewable energy investment, or are looking to take advantage of cheaper electricity tariffs with battery storage alone, we can help you find the right solution.
Every system is carefully designed by Nick and installed by our experienced electricians, giving you confidence that your investment is in safe hands.

Take control of your energy with battery storage
Nick’s Advice
We don’t believe there’s one battery that’s right for every home. A retired couple who are home all day use electricity very differently from a family charging an electric car overnight. That’s why every system we install is designed around how you actually use energy, rather than simply recommending the biggest battery available.

Electricity is rarely used at the exact moment it is generated. For example, solar panels often produce their highest levels of energy during the day, when many people are out of the house, while electricity usage usually increases in the evening when we return home, cook, use appliances and charge vehicles.
Battery storage helps bridge this gap by allowing you to store energy when it is available and use it when you need it most.
For homeowners with solar panels, this means you can make better use of the electricity your system generates rather than sending surplus energy back to the grid. For homeowners without solar, a battery can allow you to take advantage of cheaper electricity tariffs by charging when prices are lower and using that stored energy later.
At NS Eco, we believe battery storage should be designed around your lifestyle, your home and your future plans. We don’t believe in simply fitting the biggest battery available — we take the time to understand how you use energy and recommend a solution that genuinely suits your needs.
Tesla Powerwall

Perfect for homeowners wanting premium performance, seamless monitoring and excellent backup capability.
Fox ESS

A flexible and cost effective solution that suits many homes and can easily grow as your energy needs change.
SolaX

Modular battery systems are perfect if you’re planning on expanding your energy storage system in the future.

Battery storage with solar panels
If you already have solar panels, adding battery storage can help you get even more value from your existing system.
Without a battery, any electricity your solar panels generate but don’t immediately use is usually exported back to the grid. A battery allows you to store that surplus energy and use it later, such as in the evening when your solar panels are no longer generating.
This can help you:
- Increase your use of your own solar energy
- Reduce your reliance on electricity from the grid
- Make better use of your solar investment
- Take greater control of your energy costs
We regularly install battery storage alongside existing solar PV systems and can assess your current setup to recommend the most suitable solution.
Whether your solar system was installed by NS Eco or another installer, we can discuss the options available for adding battery storage to your home.
Battery storage without solar panels
Battery storage is no longer only for homes with solar panels.
Many homeowners are now choosing batteries as a way to take more control of their electricity costs, even if they don’t currently generate their own energy.
With the right electricity tariff, a battery can be charged when electricity prices are lower, such as overnight, and then used during the day when electricity costs are higher.
This can be particularly beneficial for homes with:
- Higher electricity usage
- Electric vehicles
- Heat pumps
- People working from home
- A desire for greater energy independence
If you are considering solar in the future, we can also help you choose a system that can grow with your home’s changing energy needs.

Battery backup when you need it most
For some homeowners, battery storage is not only about saving money — it’s about having greater security and peace of mind.
With the correct system design, battery storage can provide backup power during a power cut, helping to keep important parts of your home running when you need them most.
However, not every battery system provides backup power as standard. It requires careful planning, suitable equipment and correct installation to ensure it works safely and effectively.
At NS Eco, we can discuss your requirements and design a solution that matches what you want from your system, whether that is powering essential circuits during an outage or creating a more complete backup solution.
FAQs
For many homeowners, yes. Battery storage allows you to make better use of the electricity you generate from solar panels or take advantage of cheaper off-peak electricity tariffs by storing energy to use later. Whether a battery is worthwhile depends on your energy usage, your electricity tariff and what you want to achieve. We’ll always take the time to understand your home before recommending a solution, so you can make an informed decision.
Absolutely. Battery storage isn’t just for homes with solar panels. Many homeowners choose to install a battery so they can charge it overnight using cheaper electricity tariffs and use that stored energy throughout the day. If you’re considering solar in the future, we can also advise on a system that’s ready to grow with your home.
In many cases, yes. Adding battery storage to an existing solar PV system is a great way to store more of the electricity you generate instead of exporting it back to the grid. We’ll assess your current setup and recommend the best way to integrate a battery with your existing system.
There isn’t one battery that’s right for every home. The best system depends on your energy usage, your budget, whether you already have solar panels, if you own an electric vehicle and whether backup power is important to you. We install trusted systems from Tesla, Fox ESS and SolarEdge, Myenergi, Sigenergy SigenStor, Huawei and more. We’ll recommend the option that’s right for your home rather than simply the most expensive one.
Most modern home battery systems are designed to last for many years and typically come with warranties of around 10 years, depending on the manufacturer. With the right system and correct installation, your battery should provide reliable performance for years to come. We’ll explain the expected lifespan and warranty of any system we recommend.
Some battery systems can, but not all batteries provide backup power as standard. If keeping essential circuits running during a power cut is important to you, we can design a system with backup functionality. During your survey, we’ll explain the available options and help you choose the right setup for your home.
In most cases, no. Domestic battery storage systems usually don’t require planning permission. However, every property is different, so if there are any additional requirements or restrictions, we’ll discuss them with you before installation.
Yes. If your installation requires approval from your local Distribution Network Operator (DNO), we’ll take care of the application on your behalf. We manage the process from start to finish, making the installation as straightforward as possible for you.
Most home battery systems are surprisingly compact and can often be installed in a garage, utility room or other suitable location. During your survey, we’ll recommend the best position based on safety, accessibility, and the layout of your property, while keeping the installation as neat and unobtrusive as possible and ensuring compliance with regulations.
Most domestic battery storage installations are completed within a single day, although larger or more complex systems may take a little longer.
Yes. The battery systems we install include easy-to-use monitoring apps, allowing you to see how much energy you’re generating, storing and using in real time. For many systems, Nick can also access them remotely (with your permission) to help diagnose issues and provide support if it’s ever needed.
Yes. Battery storage works throughout the year, including during winter. Although solar panels typically generate less electricity during the shorter days, a battery can still help you store off-peak electricity overnight or make the most of the energy your solar system does generate. It’s about using your energy more efficiently, whatever the season.
Choosing the right battery isn’t simply about buying the biggest one available. The ideal size depends on your household’s electricity usage, whether you already have solar panels, if you charge an electric vehicle and what you want the battery to achieve. Every system we install is designed around your home, Nick will recommend a battery that’s the right fit for your needs, without oversizing or undersizing the system.