POLAR ESS Inverter Battery Kit
A complete system
— ready to run
Everything you need, already configured. No extra parts. No guesswork. Just install and go.
WHY POLAR
Designed to work. Built to last.
The POLAR ESS Inverter Battery Kit is a complete home energy storage solution designed for UK homes, combining a hybrid inverter, low-voltage batteries, cables, protection, and essential setup components in one ready-to-install system. Available in 5kWh, 10kWh, 15kWh, and 20kWh options, it is suitable for smaller households, growing families, and high energy usage properties.
Choose your Polar system
Choose based on your home size and usage — every system is designed to work out of the box.
Prices exclude delivery charges.
Choose your Polar system
Choose based on your home size and usage — every system is designed to work out of the box.
Prices exclude delivery charges.
Frequently Asked Questions
Everything you need to know about POLAR systems.Can't find what you're looking for? Contact us.
What size battery do I need?
The right battery size depends on how much energy your home uses and when you use it most. Smaller systems are ideal for light daily usage, while larger systems are better for bigger households or homes with higher evening energy demand. Our Polar packages are designed to make choosing simple — start with the system that best fits your home size and usage.
Can I add solar panels later?
Yes. Polar systems are designed to be flexible, so you can add compatible solar panels in the future if you decide to generate and store your own energy. You can start with battery storage first and expand later when you're ready.
Does it work with off-peak tariffs?
Yes. Polar systems work well with off-peak and time-of-use tariffs. The system can charge the battery when electricity is cheaper and use stored energy during more expensive periods — helping reduce overall energy costs.
Is it suitable for UK homes?
Yes. Polar systems are designed for UK households and everyday home usage. They are suitable for typical residential electrical setups and built to support modern energy usage patterns.
What is included in the kit?
Each Polar system package includes the inverter, battery modules, and essential setup components required for installation. Systems are pre-configured to work together out of the box, helping simplify installation and setup.
Is installation required by an electrician?
Yes. Installation should always be carried out by a qualified electrician or approved installer to ensure the system is installed safely and correctly.