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Power your home or business with one of the most advanced hybrid inverters available today. The GoodWe 9.9kW ET G2 Series Hybrid Inverter (GW9900-ET-20) offers powerful performance, smart backup capabilities, and advanced energy control features—making it ideal for modern, high-demand solar installations. Designed for three-phase systems and compatible with high-voltage lithium-ion batteries, this hybrid inverter is your gateway to flexible, efficient, and future-ready energy management.
1 x GoodWe ET G2 Hybrid Inverter – 9.9kW, 3 Phase, 3 MPPT (GW9900-ET-20)
Compatible with GoodWe Lynx F HV Battery Series and other high-voltage battery systems
9.9kW Output Power with support for up to 16,000W of PV input, ideal for medium to large residential or commercial setups
3 MPPTs for flexible panel layouts across different orientations or shaded zones
160% DC Oversizing capability to maximise generation, even under suboptimal conditions
High-Voltage Battery Compatible (150–720V): Seamlessly integrates with GoodWe Lynx HV batteries and other major brands
<10ms UPS-Level Backup: Keep critical appliances powered during outages with rapid automatic switch to battery
Peak Shaving Enabled: Manage and reduce demand charges by discharging stored energy during peak usage
IP66 Outdoor Rated for full weather protection
Type II SPD on both DC and AC sides for lightning and surge safety
Integrated AFCI 3.0 for advanced arc fault protection
Built-in protections for reverse polarity, overcurrent, and short circuits on both AC and DC lines
Built-in WiFi, LAN, and Bluetooth for real-time tracking via GoodWe SEMS portal or mobile app
RS485 and CAN interfaces for seamless communication with batteries, meters, and energy management systems
Dry Contact Outputs for smart load management or generator control
98.2% Max Efficiency and 97.5% Battery-to-AC Efficiency for optimal energy use
Natural Convection Cooling ensures quiet, reliable operation with no fans
Wide operating range of -35°C to +60°C, suited to Australia's toughest conditions
Output Power: 9,900W (on-grid and backup)
Battery Charging Power: Up to 15,000W
Voltage: 400/380V, 3 Phase
PV Input Voltage Range: 120–850V (Max 1000V)
Max AC Output Current: 14.5A
Max Operating Altitude: 4000m
Medium to large residential homes
Light commercial properties or farms
Installations requiring hybrid + backup functionality
Customers seeking a reliable and scalable solar system
The GoodWe 9.9kW ET G2 Hybrid Inverter is the smart choice for powering larger properties with flexible solar and storage needs. With cutting-edge performance, robust safety features, and intelligent energy management, this inverter future-proofs your investment while delivering energy independence.
✔️ Hybrid Inverter
✔️ Backup Ready
✔️ 3 MPPTs for Flexible Layouts
✔️ IP66 Outdoor Rated
✔️ Australian Certified & Supported
All our products are covered by the Manufacturer's Warranty, which guarantees that they will be free from defects in materials and workmanship under normal use and service. The specific terms and duration of the warranty may vary depending on the product and the manufacturer. Please refer to the product's documentation or contact our customer support team for detailed warranty information.
Warranty Claim Process
In the unfortunate event that you encounter a faulty product, we want to make the warranty claim process as seamless as possible for you. To initiate a warranty claim, please follow these steps:
If damage is confirmed to be from normal wear-and-tear, drops, unauthorized repairs, or other non-warranty factors, service and shipping fees will apply. In such cases, we will contact the customer for approval before proceeding with paid repairs.
Unfortunately we cannot provide loaner units during the warranty repair process. For mission-critical equipment, we highly recommend purchasing backup units to prevent downtime in case of defects.
You have 30 calendar days to return an item from the date you received it.
To be eligible for a return:
Upon receiving your order, we kindly request that you thoroughly inspect all packages within 7 days of delivery. This inspection period is crucial as it allows you ample time to identify any visible damage caused during transit. Please keep in mind that promptly reporting any freight damage is vital in safeguarding your right to file a claim and ensuring a swift resolution.
Should you identify any freight damage during the inspection, we urge you to notify us immediately. Our customer support team is ready to assist you through the claim filing process and provide the necessary guidance to ensure a smooth and hassle-free experience.