If you already have solar panels, you’re part of a growing community of Surrey homeowners choosing cleaner, smarter energy. But there’s a clever way to make your system work even harder – by using an immersion controller.
An immersion controller helps you get the most from every unit of energy your panels produce. Instead of letting excess electricity go back to the grid, it redirects that free power into heating your water. It’s simple, automatic, and one of the most effective ways to boost your energy savings.
Here’s how immersion controllers work, why they’re worth it, and what makes Sheerwater Solar’s solutions stand out.
An immersion controller is a smart energy management device that works alongside your solar panel system. When your panels produce more electricity than your home is using, that surplus energy would normally be exported to the grid. The immersion controller detects this extra power and diverts it to your immersion heater, so it warms your water instead.
The result is hot water powered by your own solar energy, with no extra cost.
It’s a win-win: you cut your reliance on the grid and make full use of the energy your panels are already generating. Over time, this can make a noticeable difference to your energy bills and your home’s carbon footprint.
On average, around 18% of a household’s electricity goes towards heating water. That’s a significant chunk of energy that can be supplied directly by your solar system.
By using surplus power for hot water, you:
Whether you’re in Woking, Guildford, Esher, or anywhere across Surrey, immersion controllers offer a simple upgrade that adds real everyday value.
At Sheerwater Solar, we install the MyEnergi Eddi, a smart solar diverter designed to optimise your self-generated energy. It’s one of the most advanced and reliable products of its kind, built specifically for homeowners who want to reduce waste and get the most out of their renewable energy.
Eddi monitors your home’s energy flow in real time. It supports both small trickle charges and larger boosts, meaning even on cloudy days, you can still capture and use what your panels produce.
Because it integrates seamlessly with your existing system, it works quietly in the background. You’ll simply enjoy lower bills, more hot water, and the satisfaction of knowing your solar power is being fully used.
For homes equipped with SolarEdge systems, the SolarEdge Home Hot Water Controller is another excellent way to make solar energy go further.
This smart controller diverts excess photovoltaic (PV) energy into your water heater, improving your self-consumption and reducing how much you draw from the grid. It connects directly to the SolarEdge Home ecosystem, giving you a single platform to monitor and manage your energy production, storage, and use.
Key benefits include:
Like the MyEnergi Eddi, the SolarEdge controller helps Surrey households make better use of their solar power, lowering costs and boosting efficiency.
Immersion controllers work beautifully with other parts of your renewable setup. Combined with battery storage, they give you full flexibility – storing energy for use at night and using surplus during the day for heating water. Add smart meters into the mix, and you can see exactly how your energy is being used, helping you adapt habits for even more savings.
These systems don’t just save money. They make your home more energy independent and resilient against rising energy costs. You get the reassurance that every bit of sunshine hitting your roof is working to your advantage.
At Sheerwater Solar, we provide professional installation and setup, ensuring your immersion controller integrates smoothly with your solar panels, inverter, and home energy system. Our team works across Surrey and surrounding areas, offering friendly, honest advice and expert workmanship.
Every ray of sunlight on your roof has value. With an immersion controller, you make sure none of it goes to waste.
By turning excess solar energy into free hot water, you can reduce bills, cut carbon emissions, and enjoy a warmer, more efficient home.
At Sheerwater Solar, we’re here to help you make the most of your solar investment, from installation to smart upgrades that enhance performance.
If you’d like to learn how an immersion controller could work in your home, get in touch with our team today.
At Sheerwater Solar, sustainability isn’t just something we talk about, it is what drives us every single day. Our mission is to help homeowners make the switch to clean, renewable energy, lowering bills while reducing reliance on fossil fuels. Every solar panel installed is more than a...
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.