Looking to cut your energy bills and reduce your carbon footprint?
We offer a full range of renewable energy solutions tailored for homes and businesses—whether you're after a more efficient heating system, exploring electric options, or ready to future-proof your property.
Our experienced renewable energy engineer will guide you through the best options to suit your space, needs, and budget—helping you save energy, spend less, and do your part for a greener Guernsey.
Solar Panels On-Roof System
On-roof solar panels are a smart, cost-effective way to generate your own electricity and reduce long-term energy costs.
J.E.R. supply and install high-quality solar panel systems. We select the right panels based on your budget, roof design, and the performance you want from your system.
Our on-roof systems:
-
Are mounted approximately 50mm above the roof surface for ventilation and efficiency
-
Begin generating electricity as soon as daylight hits the panels
-
Are designed to integrate neatly with your existing roof
-
Deliver reliable performance with minimal visual impact
We carefully assess roof orientation, structure, and shading to ensure your system is designed for maximum output and long-term reliability.
The result?
Clean, renewable energy generated on your roof, lower electricity bills, and a future-proof investment in your home
Solar Panels In-Roof System
In-roof solar panels are the perfect solution if you want renewable energy without compromising the look of your home.
J.E.R. install premium Viridian Solar in-roof systems, where the panels are fully integrated into the roof structure rather than mounted on top. During installation, roof tiles are carefully removed and replaced with the solar system, creating a flush, seamless finish that looks like part of the roof itself.
In-roof solar systems offer:
-
A sleek, modern appearance with no panels sitting proud of the roof
-
Excellent integration for new builds and re-roofing projects
-
Clean roof lines with minimal visual impact
-
Reliable performance using trusted, high-quality technology
Once installed, the panels sit neatly in line with your roof, delivering a subtle, high-end finish while generating clean electricity from daylight.
The result?
A visually stunning solar installation that blends perfectly with your home while reducing energy costs and future-proofing your property.
Solar Thermal Panels
Solar thermal systems harness the power of free sunlight to heat your hot water, offering a highly efficient and cost-effective renewable solution for your home.
Unlike solar PV, which generates electricity, solar thermal technology directly heats water — making system design and installation critical to achieving optimum performance and long-term reliability.
At J.E.R., we carefully design solar thermal systems to ensure:
-
Maximum efficiency from available sunlight
-
Safe integration with existing hot water systems
-
Correct control, temperature regulation, and protection
-
Seamless compatibility with boilers or heat pumps
Solar thermal panels continue to work even in cloudy conditions and require very little ongoing maintenance. When sunlight alone isn’t sufficient, a backup boiler or heat pump automatically provides additional heat to maintain hot water supply.
With a well-designed, quality system, solar thermal installations can last 20–25 years, delivering consistent performance and long-term savings.
The result?
A reliable, low-maintenance renewable system that reduces energy costs while providing dependable hot water all year round.
Intelligent, Reliable and Built for Modern Homes
The SolarEdge Home Battery is a smart, high-performance energy storage system designed to work seamlessly with your SolarEdge solar PV system. It allows you to store the electricity you generate during the day and use it when you need it most – in the evening, at night, or during peak tariff periods.
Instead of exporting excess solar energy back to the grid for minimal return, you can store it and significantly increase your self-consumption — reducing your reliance on your energy supplier and protecting yourself from rising electricity prices.
With a SolarEdge battery system, you can typically cover 60–80% of your annual electricity usage with clean, self-generated solar energy (depending on system size and usage patterns).
How Battery Storage Works
-
Solar panels generate electricity during daylight hours.
-
Your home uses what it needs instantly.
-
Excess energy charges the SolarEdge battery.
-
When the sun goes down, the battery automatically powers your home.
-
Only when the battery is empty does your property draw from the grid.
The system works automatically in the background — intelligently managing your energy to maximise savings.
Future-Proof Your Home
Battery storage is no longer just an add-on — it’s becoming a key part of modern energy systems. As electricity prices continue to fluctuate, having your own stored energy gives you long-term protection and control.
If you're already investing in solar, adding a SolarEdge battery ensures you maximise the return on that investment and move closer to true energy independence.
Key Benefits of a SolarEdge Battery
✔ Greater Energy Independence
Generate, store and use your own electricity instead of relying on external suppliers.
✔ Lower Energy Bills
Store free solar energy and reduce expensive peak-time grid consumption.
✔ Smart Energy Management
SolarEdge’s integrated monitoring platform lets you see exactly how much energy you generate, store and use — all in real time via app or desktop.
✔ Seamless System Integration
Designed specifically to work with SolarEdge inverters for maximum efficiency and performance — no mismatched components.
✔ Backup Power Option
With the addition of backup interface equipment, your system can provide power to essential circuits during a grid outage.
✔ Compact & Modern Design
Wall-mounted, space-efficient and ideal for garages, utility rooms or plant areas.
✔ High Safety Standards
Built with advanced lithium-ion technology and multiple layers of protection for safe and reliable operation.
Grant Air Source Heat Pumps
At J.E.R., we proudly install Grant Air Source Heat Pumps, including the highly efficient Grant Aerona³ range. Designed specifically for the UK and Guernsey climate, Grant heat pumps deliver reliable, energy-efficient heating and hot water all year round.
Grant systems are known for their quiet operation, high performance, and sleek design, making them suitable for both residential and light commercial properties. With excellent flow temperatures and smart controls, they integrate seamlessly with underfloor heating, radiators, and modern hot water cylinders.
Our in-house team manages everything from system design and heat loss calculations to installation and commissioning. You benefit from a fully accredited installation, manufacturer-backed warranties, and ongoing support — giving you complete peace of mind.
If you’re looking for a trusted, efficient, and future-proof heating solution, a Grant Air Source Heat Pump installed by J.E.R. delivers comfort, savings, and sustainability in one complete package.
Electric Vehicle Charging
At J.E.R., we supply and install ICS Electric Vehicle Charging solutions for homes and businesses looking to future-proof their properties.
ICS chargers are designed with reliability, safety, and smart functionality in mind. Whether you need a single domestic charge point or multiple units for a commercial site, ICS systems provide fast, efficient charging with intelligent load management to protect your electrical supply.
Perfect for residential driveways, commercial premises, and industrial estates, ICS EV chargers offer:
-
Smart charging capability
-
Durable, weather-resistant design
-
Tethered or untethered options
-
Integration with existing electrical infrastructure
Our qualified electricians handle everything in-house — from initial site assessment and supply capacity checks to installation, testing, and certification. You get a compliant, professionally installed system that meets current regulations and delivers dependable performance.
As electric vehicles become the norm, installing an ICS charging point is a practical investment that adds value to your property while supporting the transition to cleaner transport.
