In October 2025, Perth Solar Warehouse’s parent company, McKercher Corporation, published the details of a Product Change Notice for Sigenergy SigenStor EC and Sigen Hybrid inverters, addressing improvements to the AC output interface. Due to further field observations and consultations with regulatory bodies, this notice has escalated to a voluntary product recall affecting specific single-phase models distributed throughout Australia.
The recall, initiated by Sigenergy Technology Co., Ltd., is being conducted under the supervision of the Australian Competition and Consumer Commission (ACCC), with support from the Clean Energy Council (CEC), the Clean Energy Regulator, and state-based electrical authorities.
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Sigenergy has identified isolated occurrences of damaged AC plugs on certain 8 kW, 10 kW, and 12 kW single-phase Sigen Energy Controllers/Inverters. While the issue originates from incorrect installation practices rather than a product defect, the company has opted for a voluntary national replacement program to ensure the highest standards of safety and reliability.
This measure follows Sigenergy’s proactive engineering response and firmware updates designed to safeguard system performance while replacement units are distributed.
Models Affected
Single-Phase (SP) – 8 – 12 kW
- SigenStor EC 8.0 SP / 10.0 SP / 12.0 SP
- Sigen Hybrid 8.0 SP / 10.0 SP / 12.0 SP
Note: No three-phase models are affected.
Affected units can be identified by production before October 2025 and may lack the green-dot packaging mark introduced with the updated AC plug design.
Sigenergy is initiating a voluntary product recall due to issues with the sensitivity of the AC plug connection, which is linked to improper installation methods. The original design of the plug required the use of ferrules and crimping to create a stable electrical connection. If these steps were either omitted or incorrectly executed, it could lead to localised heating and mechanical degradation of the plug during prolonged high-power use.
Although there is no systemic defect with the product, Sigenergy has redesigned the AC plug to align with the three-phase connector system. This new design eliminates the need for ferrules or crimping, ensuring consistent installation quality and reducing the chances of variations in the field.
Firmware Safeguard: All installed 8–12 kW single-phase models have received a firmware update enabling real-time monitoring and temporary power reduction during high-load conditions. This ensures continued safe operation until hardware replacement.
New AC Plug Design: A ferrule-free, pre-moulded connector has been introduced to standardise installation practices and prevent overheating risks.
Verification: Regulatory bodies have confirmed that the inverters remain compliant when installed according to manufacturer instructions.
The Sigenergy voluntary product recall is being undertaken as a precautionary safety initiative.
For homeowners:
- Safe to Operate: Your system remains operational and safe under the firmware safeguard.
- Replacement at No Cost: Sigenergy will replace affected inverters free of charge, including installation.
- Extended Warranty: Each replaced unit receives an additional 2-year warranty.
- No Action Required: Customers will be contacted directly to schedule their replacement through Sigenergy’s service network or Perth Solar Warehouse.
For installers:
- Check Model & Serial Number: Verify if installed single-phase units fall within the 8–12 kW range delivered prior to October 2025.
- Replacement process: Perth Solar Warehouse will perform replacements for our affected customers, Q1 2026.
- Stop Use of Previous Versions: The previous AC plug version must no longer be installed in Australia.
The Sigenergy voluntary product recall is conducted in coordination with the ACCC’s Product Safety Australia, the Clean Energy Regulator, and the Clean Energy Council. Authorities have verified that the recall addresses installation-related concerns only and maintains the Sigenergy range’s eligibility for Battery Small-Scale Technology Certificates (BSTCs).
New and replacement SigenStor EC and Sigen Hybrid single-phase inverters can be identified by:
- Green dot marking on the outer packaging label, and
- Revised product documentation noting the “Updated AC Plug (OT-type)” connection.
For further clarification, please contact: service@sigenergy.com
Alternatively, Perth Solar Warehouse customers and installers may contact the PSW technical support team for assistance regarding scheduling or documentation.
Perth Solar Warehouse and Sigenergy remain committed to engineering excellence, safety, and customer confidence. This voluntary recall demonstrates the shared priority of maintaining the integrity, reliability, and compliance of all Sigenergy systems operating across Western Australia.
To date, there are no recorded occurrences of Sigenergy AC plug failures in Western Australia. This is widely attributed to a more conservative grid operation under VPP conditions.
Our responsibility is to minimise PSW customer exposure to this minor interruption in Sigenergy supply.
No.
PSW customers with a delayed installation date affected by the Sigenergy voluntary product recall will not in-cure additional expense if affected by the subsidy reduction.
No.
Under the Sigenergy voluntary product recall, the previous version Inverter/Energy Controller models of single-phase (8, 10, 12 kW) must no longer be used in Australia.
We’ll touch base with affected PSW customers for an ideal revised installation date in Q1 2026.
Please note: alternative Australian geographic regions receive stock at different times. Stock prioritisation will most likely be in order of highest demand Australian regions.
Yes.
A product recall would make Sigenergy ineligible to further claiming BSTC’s. However, Sigenergy is conducting a voluntary product recall, which is being overseen by the ACCC’s Product Safety Australia to aid consumer confidence appeasing the CEC product listing requirements.
Yes.
Sigenergy has already remotely output limited supply of your 8, 10 or 12 kW Sigen Energy Controller in high-current scenarios through an over the air update. This method ensures time under safe lower-current operating conditions while all parties address the Sigenergy voluntary product recall.
We’ll touch base with affected PSW customers for an ideal replacement date in Q1 2026.
Sigenergy voluntary product recall for selected Energy Controllers in Australia
Electrical safety recall: SigenStor EC 8.0/10.0/12.0kW SP AU Energy Controllers: Notice ›
