In November 2025, Sigenergy recalled its single-phase 8, 10 and 12 kW energy controllers, the inverter part of a SigenStor system, because the AC plug can overheat. The ACCC published the recall, and the Clean Energy Regulator says around 100 inverters have been affected across Australia.
If you own one, keep it connected to the internet and wait to be contacted about a free replacement. You don’t need to switch it off unless you see signs of overheating.
Last checked 12 September 2026. Recall details can change, so check the ACCC’s Product Safety Australia listing for the latest.
Which systems are affected
The recall covers Sigenergy’s single-phase energy controllers rated at 8, 10 or 12 kW that were fitted with the original quick-connect AC plug, the type that needs ferrules crimped onto the wires. Three-phase controllers aren’t part of it.
To check yours, look at the rating label on the energy controller, or open the device details in the mySigen app. Sigenergy says owners of affected units get a notification through the app.
What went wrong
The ACCC’s recall notice warns that “the AC plugs may overheat and become damaged, posing a risk of fire”, and that incidents have occurred. SolarQuotes, which first reported the problem, described melted plugs and one small fire that stayed contained within the inverter.
Sigenergy says its investigations traced the damage to installations where the wires weren’t fitted with properly crimped ferrules. It has redesigned the plug to match the connector on its three-phase units, which can’t be fitted that way. Whatever the cause on a particular job, the outcome for owners is the same: the plug gets replaced at no cost to you.
What to do if you own one
- Keep the system online. Sigenergy uses the internet connection to push a firmware update and monitor each affected unit. The update can reduce the AC output slightly during long spells at full power, to stop the plug from overheating. On a hot, clear afternoon your peaks may be a little lower than before. That’s expected until your unit is replaced.
- Wait to be contacted. Your retailer, your installer or a Sigenergy Australia service partner will contact you to arrange a free replacement with the updated plug.
- Know the warning signs. A hot plastic or burning smell near the unit, discoloured or melted plastic around the AC connection, or the system shutting down over and over. If you notice any of these, keep people away, shut the system down using the procedure on the label if you can do it safely, and call your installer or Sigenergy Australia.
- If your installer has closed, contact Sigenergy Australia through its website, or call us. The recall is Sigenergy’s responsibility no matter who installed the system, and as a Sigenergy partner we can help you through it.
Is the battery affected?
The recall is about the AC plug on the energy controller, not the battery modules. Your SigenStor battery stack isn’t being replaced.
If you’re partway through buying or installing a Sigenergy system, ask your installer to confirm the energy controller uses the updated plug, and ask how the recall affects the timing of your installation and the federal certificate claim. The Clean Energy Regulator has said it is working with Sigenergy on certificate applications for affected products.
Where Solar Repairs fits
Solar Repairs is a Sigenergy partner. We can confirm whether your energy controller is one of the recalled units, check it for signs of heat damage, and help you through Sigenergy’s recall process, including when your original installer is no longer trading.
If your system is doing something the recall doesn’t explain, such as losing battery capacity, dropping its connection or throwing faults, that’s worth a separate look. See our Sigenergy battery and inverter repairs page or call 1300 555 274.
Common questions
Is my Sigenergy battery safe to keep using? Neither Sigenergy nor the ACCC has told owners to stop using affected systems. Keep yours connected so the firmware update and monitoring work, and switch it off only if you see signs of overheating.
Will I have to pay for the replacement? No. The ACCC recall notice says affected owners receive a free replacement product with an updated AC plug.
Why is my Sigenergy system producing a bit less since late 2025? The recall firmware can trim the AC output during sustained full-power operation to protect the plug. If output has dropped a lot, or the system is faulting, something else may be going on and it’s worth getting checked.
How do I know if my unit is affected? Check the energy controller’s label for a single-phase 8, 10 or 12 kW rating, or look for a recall notification in the mySigen app.
My installer has gone out of business. Who do I contact? Sigenergy Australia, through its website, or us. Solar Repairs is a Sigenergy partner and can help you through the process, whoever installed the system.
Sources
- ACCC, Product Safety Australia recalls (search “Sigenergy” for the current notice)
- Clean Energy Regulator, Recall issued for Sigenergy single phase 8/10/12 kW energy controllers, November 2025
- SolarQuotes, ACCC publishes Sigenergy recall notice over safety concerns, 20 November 2025
- PSW Energy, Next steps: Sigenergy voluntary product recall (summary of Sigenergy’s installer notice)
Written by Clark Stasiw, owner of Solar Repairs. Electrical Licence EC8323. Updated 12 September 2026.
