In this article
The 25 kW version of the SigenStor EVDC is already sitting inside the 12.5 kW box on your wall. Sigenergy sells the switch, not new hardware: buy a licence in the mySigen app and the charging ceiling doubles. No site visit, no tools, nothing on the driveway changes.
Update, June 2026: Sigenergy has since discontinued the factory 25 kW models for Australia and New Zealand — every new EVDC now ships at 12.5 kW, and this licence is the standard path to 25 kW. Whether a given unit can take it depends on the hardware version, so read what changed in June 2026 before you pay for anything.
In short
- The SigenStor EVDC 25kW Fast Charging License lifts the charger's limit from 12.5 kW to 25 kW in software. The hardware for it is already inside the unit.
- Activation happens in the mySigen app. Eligibility depends on your hardware version; older models that qualified were offered a free replacement nameplate, which must be fitted for compliance.
- 25 kW is a ceiling, not a promise. Real charging power is whatever your solar, battery packs and inverter can supply at that moment.
- Since June 2026, new EVDCs all ship at 12.5 kW — the licence is now the only road to 25 kW on new hardware.
How the upgrade works
- Open the Mall section of the mySigen app.
- Purchase the SigenStor EVDC 25kW Fast Charging License with a credit card.
- Copy the licence key from your order and activate it against your EVDC.
That is the whole job. If your EVDC is an older model, Sigenergy provides a free replacement nameplate, and it has to go on the unit — the plate on the charger must match what the charger can now deliver, and that is a local regulatory requirement, not a suggestion. The detail is in Sigenergy's application note, with a video if you would rather watch than read.
What 25 kW means on your driveway
The licence raises the limit. What the charger actually delivers at any moment is the sum of what your system can find:
- Solar, which moves with the sun and the cloud;
- Battery — more packs, more output;
- Grid, capped by your Energy Controller's rated power.
The EVDC runs two modes. PV Surplus Charging draws on solar and battery only. Fast Charging adds the grid on top. On a single-phase Perth home, reaching the full 25 kW leans on solar and battery working together with the grid share — which is why battery pack count matters more to real charging speed than the licence does.
So if your upgraded unit reads well under 25 kW on a cloudy afternoon, nothing is broken. That is the system telling you what energy it has.
Should you buy it?
Not automatically. The licence earns its keep in households doing big daily kilometres, or running two EVs off one charger. If one car covers the school run and charges through the day on solar, 12.5 kW is already doing the job and the licence buys you headroom you will rarely touch.
If you are weighing it up, the numbers that matter are your battery pack count and your inverter rating, not the licence price. Ask us and we will tell you whether your configuration can actually use the extra 12.5 kW before you pay for it — the EV DC charging module is a module inside the SigenStor system, and the system decides what it delivers. Not an EVDC owner yet? Start with the charge your car pathway and we will spec the charging around how you drive.