About This Product

The GoodWe 20kW Three Phase ET SERIES Solar Hybrid Inverter IP66 is a three-phase, high-voltage hybrid inverter designed for solar-plus-storage systems. It supports grid, solar and battery input, and delivers up to 20 kW of AC output. With an IP66 rating it is protected against dust and water, making it suitable for outdoor or harsh environment installations. Built-in smart-metering, WiFi communication and multiple MPPTs allow efficient monitoring and management of solar production, battery charging/discharging, and load use. This inverter also offers backup power capability, peak shaving, and load management to optimise energy consumption and reduce grid demand.

Who This Product Suits

This inverter is well suited to large residential properties, multi-phase homes or small commercial/industrial installations that have high or variable power demand. It’s ideal where a battery storage system will be used (for example with high-voltage lithium batteries) and where uninterrupted backup power, load management and self-consumption optimisation are important. It also works for systems with large solar arrays ‘ especially if you want flexibility to expand or oversize your PV input while maintaining safety and efficiency.

Specifications Explained

• AC Output: 20 kW (three-phase) ‘ sufficient for heavy loads or three-phase distribution setups.
• Hybrid operation (solar + battery + grid) ‘ allows solar generation, battery storage and grid supply in a single inverter.
• Two MPPT inputs ‘ improves energy harvest when panels face different orientations or under partial shade.
• Wide DC input range (approx. 200’850 V nominal; supports up to 1000 V DC) ‘ compatible with high-voltage battery systems and large solar arrays.
• Battery compatibility: high-voltage lithium batteries (e.g. GoodWe Lynx Home / similar batteries) with battery voltage range 200’800 V ‘ enables flexible battery storage capacity sizing.
• Backup / emergency power & UPS-level switching (< 10 ms) ‘ provides reliable power supply to critical loads during grid outages.
• Peak-shaving and load-management via integrated dry-contact / relay output ‘ lets you control external loads (e.g. heat pumps, hot water systems) to optimise energy consumption.
• IP66 enclosure ‘ dust-tight and water-resistant, suitable for outdoor installation.
• Communication & monitoring: WiFi, RS485 / CAN (depending on setup) ‘ enables remote monitoring, control and smart-home integration.
• Safety features: integrated DC surge protection (Type II SPD), optional arc-fault detection (AFCI) ‘ protects the system from overvoltage, lightning and arc faults.

Summary

The GoodWe 20kW Three Phase ET SERIES Solar Hybrid Inverter IP66 is a robust, high-power inverter suited for large homes or small commercial sites with significant electrical load or three-phase supply. It combines solar, battery and grid power management, offers backup capabilities, and supports efficient energy use via smart monitoring, load control, peak shaving and battery integration. Its rugged IP66 enclosure and flexible DC/battery input make it a reliable choice for outdoor or demanding installations, while dual MPPTs and hybrid operation ensure good solar harvest and storage efficiency. In short: a dependable, flexible backbone for a serious solar-plus-storage system.

Further Information From The Manufacturer

GoodWe 20kW Three Phase ET SERIES Solar Hybrid Inverter IP66 by GoodWe is ideal for large residential or small commercial and industrial applications. The GoodWe GW20K-ET inverter is the core of the energy storage solution, facilitating powerful energy backup and load management for optimized autonomy and reduced energy cost. It also presents peak shaving that balances power demand and grid power imported, to effectively reduce extra grid demand. Furthermore, thanks to dry contact in the inverter, external loads such as heat pumps can also be flexibly activated to optimize energy consumption. The series can be combined with a range of battery capacities and brands.

Key Features

• High-Voltage Inverters: Facilitate powerful energy backup and load management for optimized autonomy and reduced energy cost
• Peak Shaving: Balances power demand and grid power imported, to effectively reduce extra grid demand
• Dry Contact: Allows for flexible activation of external loads such as heat pumps to optimize energy consumption
• Compatibility: Can be combined with a range of battery capacities and brands
• IP Rating: IP66 for protection against dust and water
• Wi-Fi Monitoring: Yes, for remote monitoring and control

Main Benefits

• Optimized Autonomy: The GoodWe GW20K-ET inverter facilitates powerful energy backup and load management for optimized autonomy and reduced energy cost
• Reduced Energy Cost: Peak shaving balances power demand and grid power imported, to effectively reduce extra grid demand
• Flexible Energy Management: Thanks to dry contact in the inverter, external loads such as heat pumps can also be flexibly activated to optimize energy consumption
• Scalability: The series can be combined with a range of battery capacities and brands

Weights & Measurements Information

About GoodWe

GoodWe is a global inverter and energy-storage manufacturer supplying residential, commercial and utility-scale markets. The company has been active in Australia since 2012 and offers a broad range of grid-connected and hybrid solutions backed by ongoing product development.

GoodWe maintains local support channels, training programs and CEC-approved products, supported by a structured monitoring platform and clear technical documentation. This combination makes the brand a practical choice for professional solar and storage installers looking for a balance of functionality, reliability and support.