Polar ESS · 3.6 kW · single-phase hybrid inverter · cable + data collector
Polar ESS 3.6 kW hybrid inverter
The Polar ESS 3.6 kW is the entry point for Polar storage builds on a standard single-phase supply. It ships as a working package with the battery-to-inverter cable and the Polar data collector in the box, so the install starts with the parts already matched.
Delivery in 3–5 working days (estimate). The dispatch clock starts at cleared payment.
Description
At 3.6 kW this unit sits at or under the standard single-phase connection threshold, which keeps most domestic retrofits on the simpler DNO route. It runs the Polar ESS line, so it is built to sit against Polar batteries in a housing rather than as a loose hybrid. The included cable and data collector mean fewer line items to reconcile on the order and less chance of a missing dongle holding up commissioning. Stock is held here in the UK, and the ex-VAT price shown on this page is the rate your trade account pays.
Specification
| Brand | Polar ESS |
|---|---|
| Part number | POLAR-3.6KW-INV |
| Power rating | 3.6 kW |
| Phase | Single-phase |
| Condition | New |
| Category | Inverters · Hybrid Inverter |
| Delivery method | Parcel courier |
Datasheets & manuals
What it pairs with
This inverter anchors a Polar build, so the natural partners are the Polar ESS 5.12 kWh battery (POLAR-5.12KWH-BATT) and the Polar external housing (POLAR-HOUSING) that takes up to four batteries behind a security cover. The supplied data collector handles monitoring. Battery counts and firmware compatibility move between revisions, so confirm the stack against Polar's current Polar pairing list before you order the batteries.
Single-phase only, and it is designed around the Polar ESS battery line rather than mixed-brand storage. Cable and data collector are included; batteries and housing are separate. For anything this page can't settle, ask the trade desk before ordering or consult a competent installer.
Often bought alongside
Last updated 2026-07-19