How the GoodWe HCA G2 works
The HCA G2 is an AC wall charger with a tethered 7.5 m cable and a Type 2 plug. It converts the AC supply from your switchboard into the current your car’s onboard charger uses. There are three models: a single-phase 7kW and three-phase 11kW and 22kW units.
You start a charge from the GoodWe SEMS+ app, by tapping an RFID card, or by just plugging in with AUTO Start. Three working modes shape how it charges: PV Priority uses excess solar first, Scheduled Charging runs on a timer, and Dynamic Load Control limits draw so the main supply isn’t overloaded. Smart phase switching lets a three-phase unit follow the solar as it rises and falls through the day.
Which model suits your home
Start at the switchboard. If your home is single-phase, the 7kW is your option. If it is three-phase, you choose between 11kW and 22kW.
The 11kW roughly halves the charging time of the 7kW; the 22kW roughly quarters it, provided your car’s onboard AC charger can accept 22 kW. Many EVs cap AC charging at 7 or 11 kW, so there is no point paying for the 22kW unless your car (or your next car) can use it. For most families the 7kW is enough; the three-phase models are worth the extra install cost when the car can use the speed, or when you want to catch a sunny afternoon rather than a long overnight window.
GoodWe HCA G2 models
GW7K-HCA-20 (7kW single-phase)
GW11K-HCA-20 (11kW three-phase)
GW22K-HCA-20 (22kW three-phase)
GoodWe HCA G2 at a glance
Works with
GoodWe Inverters
GoodWe Battery (Lynx)
GoodWe ESA
What installation involves
Site assessment
We visit the property and inspect the existing solar system, the switchboard and the space where the charger would go. We talk through how you use power and recommend a location that keeps the unit accessible.
Switchboard check
We check the switchboard’s condition, its available space and how far it sits from the proposed charger location. Any upgrade or change needed is raised at the assessment, so it is not a surprise on installation day.
Installation day
Our technicians mount the charger, install isolators and route the cabling to the switchboard. Every connection is tested before commissioning begins.
Network approval
The installation is documented and connected to meet Australian standards and the requirements of the local network operator, Western Power in the Perth metropolitan area. Synergy is the energy retailer.
Commissioning and setup
We configure the charger settings, connect the monitoring and confirm the charger is working correctly.
App walkthrough
Before leaving, we show you how to read the monitoring app, including solar generation and household usage. We explain the aftercare tips and answer your questions so you know how the system works day to day.
Things to know before you buy
Pros
The range covers single-phase and three-phase homes, with output up to 22 kW.
Solar charging happens automatically. PV Priority mode charges from excess solar, or from the grid when you need a faster top-up.
Charging adapts to the sun. Smart phase switching keeps charging going as your solar output rises and falls through the day.
You choose how to start a charge. You can use the SEMS+ app, an RFID card, or just plug in and go.
It suits most electric cars. It works with any brand of EV that uses the Type 2 connector.
Things to consider
Warranty is 2 years. GoodWe lists a 2 year limited warranty for the HCA EV charger range. If anything goes wrong we handle the claim with you.
An external Type A RCD and emergency shutdown switch are required. The charger has its own residual current protection built in, but an external Type A RCD and an emergency shutdown switch must still be fitted at the switchboard. We include both in the install.
Solar modes only work if the rest of the setup supports them. PV Priority and Dynamic Load Control rely on the charger seeing your solar and household load through SEMS. If your solar inverter is not a GoodWe or is not on the same monitoring, you can still charge the car, but the smart solar modes may not work as described.
Keep it connected to Wi-Fi. App control, scheduling and solar-aware charging all rely on the charger staying online. If the signal at the install location is weak, let us know at the site visit.
GoodWe EV charger questions Perth homeowners ask
What kW should my EV charger be?
For most homes a 7kW single-phase charger adds roughly a full day’s driving overnight, which is plenty.
Which home charger is better for my EV, a 7kW or an 11kW?
If your home only has single-phase power, the 7kW is your only option. In a three-phase home the 11kW charges faster, provided your car’s onboard charger can accept that rate.
Should I charge my EV to 100% every night?
The GoodWe SEMS+ app lets you schedule charging, so you can set a lower daily limit and automate it rather than remember to unplug.
Is 6mm cable ok for 7kW EV charger?
Cable sizing is set by the electrician against AS/NZS 3000 and depends on the circuit length and the protective device, not just the charger rating. The HCA G2 7kW draws 32 A continuous, so we size the final sub-circuit on the day based on your switchboard and run.
Can I leave my EV charger plugged in all the time?
Yes. With PV Priority or Scheduled Charging set in the app, the charger decides when to start and stop, and the unit is designed for outdoor mounting.
Can I install a level 2 EV charger myself?
No. In Western Australia the sub-circuit, isolator, RCD and connection must be installed by a licensed electrician to AS/NZS 3000, and the HCA G2 also needs an external Type A RCD and an emergency shutdown switch as part of the fixed wiring.
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Sources
Last updated October 2026.