At Callidus Trade we specialise in helping homeowners take control of their energy, reduce reliance on the grid and...
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Designed By Victron Off-Grid Experts
Run your home with
free solar energy
Save money on your energy bills
Save the planet
Protection from rising energy costs
Make money selling energy back to the grid
Store energy to use at night
★★★★★
Powering Over 5000+ customers
We are On-Grid Solar & Energy Storage System experts with tons of experience and solutions to bring your on-grid system to life.
Design
We are a highly experienced team that have years of on-grid system design capability. Trust us to design aspects of a system or a whole project.
Build
Our team of in-house engineers are able to pre-build and pre-program your system speeding up installation and ensuring everything is set up correctly. We've done it thousands of times so we've got the process down to a tee.
Supply
We stock some of the solar industries best brands like Victron, Pylontech, Qcell, Pytes, Niglon and many more. We keep good and accurate levels and are able to delivery straight to you from our UK warehouse with next business day delivery available.
Install
We are a highly experienced install team that have installed on-grid systems all across the UK. No matter the size we have the capability to get your on-grid system installed.
Trusted On-Grid Kit Perfect for Homes, Offices, Work Sites and more.
See Some of Our Most Popular Pre-Designed On-Grid Kits
IN STOCK
5kVA 9.6kWh Victron Home Energy Storage System
Backup & Storage Power for Homes
All you need to charge batteries from your solar array. Provide reliable backup power and run from solar at night.
£3,299.00
AVAILABLE IN 7-10 DAYS
30kVA 57kWh Three Phase Victron Home Energy Storage System with Solar
Three Phase Backup & Storage Power
Add this commercial Victron Energy Storage & Power system to your existing solar array,
£28,300.00
How Does It Work?
It's as simple as 1,2,3.
1
Use our contact form below to tell us your project requirements. One of our engineers will be assigned to your system. They will contact you to run through your system requirements.
2
Your assigned engineer will come back to you with their design and will discuss the choices made and why. This stage is the most important and it's where you'll finalise your system.
3
It's at this stage your system will be pre-built and programmed for you if you've chosen that. Your system will be shipped directly to you if you've chosen supply only or it will be installed if you've chosen installation.
Homeowners Are Switching to Solar — Here’s Why
Electricity bills are skyrocketing. Solar lets you take control of your energy use, reducing bills, earning money back by selling excess to the grid, and future proofing your home with clean power. Our systems are designed for UK rooftops and weather, with optional batteries for day/night reliability.
High Quality Components
Scalable & Modular Design
Durable & Long Lasting
Designed, Built & Installed by Victron Trained Engineers
Best In Class Customer Service
Join Our Customers That Don't Have To Worry About The Lights Going Out
See what Pete Goss MBE has to say about his Callidus system:
★★★★★
Rated 4.8/5 on Google
★★★★★
Rated 5/5 on Judge.me
★★★★★
Over 5000+ Happy Customers
Start Your Solar Journey – Free Quote
Experience energy independence. Our tailored on-grid systems maximise energy efficiency, reduce costs, and minimise environmental impact. Our in house engineering team delivers bespoke solutions. We handle design, specification, and system optimisation to meet your specific needs, regardless of size, weight, environmental, or regulatory constraints. We install across the UK with experienced, accredited installers.
Case Studies