If you already have solar panels, you are generating your own electricity during the day.
But many homeowners notice the same thing. A good portion of that energy is exported back to the grid, especially around midday when the house is using less power.
Adding battery storage changes that.
Instead of sending surplus electricity away, you store it and use it later. Usually in the evening, when demand is higher and grid electricity is more expensive.
Not every system is installed with a battery from the start.
Sometimes it is a budget decision. Sometimes homeowners want to see how solar performs first. And in many cases, battery technology has improved since the original installation.
Retrofitting a battery to an existing system is very common. In most cases, it can be done without replacing your panels.
During the day, your panels generate electricity as normal.
Your home uses what it needs first. Any surplus energy that would usually be exported is diverted into the battery instead.
Later, when the sun goes down, the battery releases that stored energy back into your home.
This means:
Most modern solar systems can have battery storage added. The key factor is the type of inverter you currently have.
There are two common approaches:
The right option depends on the age of your system, its size, and your energy usage patterns.
A simple assessment of your current setup will confirm what is possible.
Home batteries are compact and designed for wall mounting. They are usually installed in a garage, utility room, or on an external wall.
They do not require much space, but they do need suitable ventilation and a solid mounting surface.
Adding a battery increases upfront cost, so it is important to look at it carefully.
The main benefit is increased self-consumption. Instead of exporting excess energy at a lower rate and buying it back later at a higher one, you are using more of what you generate.
For homes with higher evening usage, battery storage often makes clear sense. For others, the numbers may need closer review.
It is always worth looking at real usage data before making a decision.
Many homeowners choose battery storage for the sense of control it brings.
You are less exposed to rising electricity prices. You rely less on the grid. And you make fuller use of the system already on your roof.
It is not about adding complexity. It is about making your existing solar work harder for you.
If you are thinking about adding battery storage to your current system, we can review your setup and give you straightforward advice on what would work best for your home.
When it comes to solar energy, panels are only a part of the picture. How those panels are mounted on your home or business makes a big difference to the look, performance, and value of your system. At Sheerwater Solar, we offer both in-roof and on-roof mounting systems. Whether you prioritise...
Reaching out to Sheerwater Solar is straightforward and hassle-free. Whether you’re interested in solar panels for your home or business in Woking, we’re here to guide you every step of the way. You can contact us directly by calling 01932 627 555 or by sending an email to info@sheerwatersolar.co.uk.
Alternatively, fill in our online form for a swift response.
What happens next?
In most cases, we’ll need to conduct an on-site survey at your property to assess the feasibility and provide you with a tailored quote. This visit allows us to understand your specific needs and explore the potential for renewable energy solutions. Following the survey, we’ll discuss the best options for integrating solar energy into your property, including detailed costs and the installation process.
We’re excited to assist you on your journey to renewable energy and look forward to hearing from you.