Energy storage
made simple

Store electricity when it’s cheaper. Use it when it matters.

Built for everyday homes — without the complexity.

Energy shouldn’t be
complicated.

That’s exactly what Polar ESS is built for.
Automatically managed by your system.

Charge when energy is cheap

Store energy from solar or off-peak hours — ready when you need it.

Use it when energy costs more

Power your home or business when prices rise — or when the grid can’t.

The Products.

Simple, reliable products that work together.

All-in-One ESS

A complete system in one unit — simple to install, easy to use, and ready to power your whole home.

Hybrid Inverter

Helps you use energy more efficiently — saving costs while keeping everything running smoothly.

Wall-Mounted Battery

Store energy at home and use it when you need it — less reliance on the grid, more control over your power.

Stackable Battery Modules

Flexible storage that grows with you — add more capacity as your energy needs change.

Your energy bills, slashed.
Your carbon emissions, cut.

Energy storage shouldn’t feel out of reach.

Polar ESS makes clean, reliable energy more accessible — without the premium price.

85%

>300kg

>1

potential energy bill savings per year

/p.a. average carbon emission reduction per home

day installation turnaround

Affordable, by design.

We keep things simple — focusing on what you need, without adding unnecessary cost.

Most energy storage
systems start around

£4,000

(Battery and inverter, excluding installation)

With Polar ESS,
you can get started from

£2,000

(Battery and inverter, excluding installation)

We are Polar ESS.

We build reliable, affordable energy storage for homes and businesses — making it easier to store energy, use it smarter, and lower electricity costs.

Our goal is simple: make clean energy more accessible to more people.