Chinese inverter manufacturer and smart energy solution provider GoodWe recently showcased several new/ish home electrification goodies – including an all-in-one solar battery system.
All-In-One ESA Home Battery
Among the solutions GoodWe displayed at Intersolar Europe held in Munich, Germany last month was its new single-phase ESA 3-10 kW/5-48 kWh all-in-one battery system. 5 kWh or 8 kWh battery modules can be used in the ESA system, with up to six modules per stack.
Blackout protection features offer a claimed switching time to back-up operation of below 4 milliseconds, which is pretty darned quick. Owners may not realise there’s a blackout happening if they are only using backed-up circuits at the time, which can be a double-edged sword unless the system sends out an alert and the owner sees it.
On the safety side, GoodWe says the new ESA offers 6-layer protection architecture and advanced features such as AI-driven Arc Fault Circuit Interruption (AFCI) 3.0. This type of protection is a type of circuit breaker designed to prevent electrical fires by detecting and interrupting arcing faults in electrical wiring.
An ESA is listed on GoodWe’s Australian website, but is quite different in form and features to the product displayed at Intersolar (pictured above), and no ESA models are on the Clean Energy Council’s approved batteries list (yet).
To get a general feel of the nature of the company’s home battery gear, check out GoodWe battery reviews from Australian owners here. By the way, SolarQuotes founder Finn Peacock hasn’t been a fan of GoodWe batteries to this point (the reviews page explains why) – but you can see home battery brands he recommends here.
New EV Charger – HCA G2
GoodWe also showed off the second generation of its AC single- and three-phase EV chargers — the HCA G2. The HCA G2 offers advanced functions including dynamic load balancing, which the original HCA didn’t offer. EV chargers represent a significant load when cranking away at full tick, and a charger with dynamic load balancing can adjust how much power it draws so that it doesn’t trip a home’s main breaker when other appliances are also in use.
There’s further detail on the HCA G2 here. The HCA G2 is not yet listed on the Australian GoodWe site.
You can see what Australian owners think of the company’s first-generation HCA devices in our GoodWe EV charger reviews, and compare EV chargers side-by-side here.
Mystery Hot Water Heat Pump
In the image above on the left is what looks to be the company’s new all-in-one heat pump hot water system. No further detail was mentioned in GoodWe’s release and I couldn’t find it on the company’s Australian or global website. But if you want to learn about heat pumps along with information on brands and models currently available in Australia (and much more), check out our hot water heat pump system guide.
New(ish) Hybrid Inverters – ET G2
More recently, GoodWe has also formally launched its ET G2 series three-phase hybrid inverter series globally, which was launched in Australia late last year.
Available in 6kW, 8 kW, 10 kW, 12 kW and 15 kW output capacities, the ET G2 offers an inbuilt smart meter, smart operation mode for maximising solar energy self-consumption, along with UPS-level backup mode (<10ms) in case of power outages.
GoodWe says the ET G2 Series has been enhanced for compatibility with high-power solar panels, with a maximum of 16A input current per string. The ET G2 is compatible with a bunch of batteries.
Listed on GoodWe’s Australian website (and on the CEC’s approved inverter list), the datasheet for the ET G2 can be viewed here. You can also check out reviews of GoodWe inverters from Australian owners. To this point and generally speaking, GoodWe inverters have offered good value for money and are well-supported here in Australia — the company has an office in Melbourne.
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I do not recall a reference by Solar Quotes (like an article like above), to the EHB range of inverters apparently released in Australia (at least three years after they were released in South Africa);
https://www.goodwe.com.au/goodwe-launches-new-ehb-single-phase-hybrid-inverter-for-larger-residential-energy-storage-applications
The text above;
“Among the solutions GoodWe displayed at Intersolar Europe held in Munich, Germany last month was its new single-phase ESA 3-10 kW/5-48 kWh all-in-one battery system.”
seems like the Sigenergy systems –
https://www.pv-magazine-australia.com/2025/03/12/sigenergy-secures-cec-approval-for-single-phase-models/
except the Sigenergy systems go up to a 12kW/48kWh inverter/BESS unit.
With what happened with the EHB inverters, a significant question is how many years before the new ESA range becomes available for supply and installation in Australia (with CEC approval), and pricing.
The Sigenergy system has a claimed 0ms switchover time.
At
https://cleanenergycouncil.org.au/industry-programs/products-program/inverters#scc
is
“GW9.999K-EHA-G20 (AS4777-2 2020) GoodWe GoodWe Technologies Co Ltd 25-07-2025 25-07-2028 AZ 69028613 ESA”
indicating that the 10kW inverter for the Goodwe 9.99kW/48kWh all in one system, is now approved by the CEC; approved as of 25 July 2025.
https://www.goodwe.com.au/Skippower/downloadFileF?id=3448&mid=60
In the above article, is
”
To get a general feel of the nature of the company’s home battery gear, check out GoodWe battery reviews from Australian owners here. By the way, SolarQuotes founder Finn Peacock hasn’t been a fan of GoodWe batteries to this point (the reviews page explains why) – but you can see home battery brands he recommends here.
”
where “GoodWe battery reviews from Australian owners here” is the label for the link to the Goodwe batteries review web page at
https://www.solarquotes.com.au/battery-storage/reviews/goodwe-review.html .
On that reviews web page, are the two filters to be displayed;
“Show Most Relevant reviews from All time”
where “Most Relevant” and “All time”, are the filter parameters.
One thing that has occurred to me – with Goodwe having announced (but, it is still to be approved in total, by the CEC), the new “All-In-One ESA Home Battery” system range, as mentioned in the article above, and, having a lesser one already available, as mentioned in the section of the article above, and, with the new Goodwe “All-In-One ESA Home Battery” system range, resembling the existing Sigenergy equivalent range, whilst, so far, as far as I am aware, only the two companies have this “All-In-One” type of product for household use (I understand that Deye have a system for commercial and industrial use, at 30kW/60kWh capacity), I am wondering whether Solar Quotes will be publishing a new and additional comparison table web page, specific to the “All-In-One” systems on offer, like the web page at https://www.solarquotes.com.au/battery-storage/hybrid-inverter-comparison/ for hybrid inverters.
Such a comparison web page, could inspire other companies to provide similar products…
Mr Busby seems to be the only person who has commented or referenced the SigEnergy system to which the ESA product bears a startling resemblance.
Given SolarQuotes significant praise of the SigEnergy systems product https://www.solarquotes.com.au/battery-storage/reviews/sigenergy-review.html does this mean that SolarQuotes might soon be giving similiar praise to the GoodWe ESA system if it is an OEM of the SigEnergy or indeed if the SigEnergy is an OEM of the GoodWe ESA system?
With the Goodwe 10kW ESA high voltage inverter GW9.999K-EHA-G20 having been approved by the CEC, as mentioned above, people may be interested in viewing this;
https://solarproof.com.au/datasheets/battery_datasheet_gw_esa_series_bat.pdf
Whilst it is subject to CEC approval, the information is, I believe, of interest, including, amongst other things, that the batteries without the heating, can operate at up to 55 degrees centigrade ambient temperature (I believe, from the specifications), which makes them appropriate for Perth, WA, with hotter summers…
Also, conspicuously, whilst the 6 module stack is referenced by Goodwe, as 48kWh capacity, that is the Usable Capacity; not the gross capacity, so, the 48kWh battery stack, is 49.92kWh gross capacity, close enough to the 50kWh maximum capacity for the federal battery subsidy through the STC programme.
Ah, if only the CEC approval would come through…
To quote (I believe it was) Con the Fruiterer, “Waiting, waiting, waiting”…
From the CEC web site, the batteries for the Goodwe high voltage (BESS) single phase all in one ESA systems, including the 10kW/48kWh system, appear to have been approved by the CEC, as of yesterday.
”
GW5.1-BAT-D-G21 GOODWE GoodWe Technologies Co Ltd 14-08-2025 14-08-2028 Pre-assembled Battery System (BS) Lynx D G2 0 5 5.12 5 Yes
GW8.3-BAT-D-G21 GOODWE GoodWe Technologies Co Ltd 14-08-2025 14-08-2028 Pre-assembled Battery System (BS) Lynx D G2 0
”
– https://cleanenergycouncil.org.au/industry-programs/products-program/batteries
Now, to find when Goodwe will have the information details – brochures and datasheets, available for the new ESA systems, and, have the new systems available for pricing, purchase, and installation.
I hope that Goodwe will be more forthcoming about the information about this new product range, than my experience with Sigenergy has been (my experience with Sigenergy, has been that they will neither acknowledge, nor respond to, email queries) about theirs.
I note that, in comparison, whilst it is only a matter of one or two kWh, the CEC approval for the Sigenergy 48kWh ESA system, shows the Sigenergy 48kWh BESS component, to have the 48kWh as the Nominal Capacity
“SigenStor-10S-48 (AS4777-2 2020) Sigenergy Shanghai SIGEN New Energy Technology Co Ltd 04-03-2025 04-03-2028 Pre-assembled Integrated Battery Energy Storage System (BESS) Sigen Energy Storage System 9.999 0 48.36 46.8 Yes”
– https://cleanenergycouncil.org.au/industry-programs/products-program/batteries
with 46.8kWh as the Usable Capacity,
the information so far, shows the 8kW modules of the Goodwe 9.99kW/48kWh, as having the 48kWh as the usable capacity, and, the Nominal Capacity as being 49.92kWh.
Thus far, with my BYD HVM 19.3kWh system, that I seek to upgrade, I have the parameters set of 20% held as reserve (emergency backup), and, I think, but, am not sure, that I have 5% set as untouchable.
And, a couple of nights ago, rain fell, so, an unscheduled grid outage.