The Goodwe GW20K-ETA-G20 is a 20 kW three-phase DC-coupled hybrid inverter from Goodwe's ETA G20 family, built for residential and light commercial sites that need solar plus high-voltage battery storage. Four MPP trackers and up to 200% DC oversizing give designers flexibility on larger arrays, while a built-in 80 A whole-home backup port with sub-4 ms transfer keeps critical loads online during outages. Backed by AFCI 3.0 arc-fault detection and IP66 outdoor protection, it is rated for -35 to +60 degrees Celsius operation across the Australian climate range. Installation Manual: Download from Goodwe Australia (PDF)
Key specifications
- 20 kW / 20 kVA rated three-phase hybrid inverter (DC-coupled HV battery)
- Four MPP trackers with up to 200% PV oversizing
- Max efficiency 98.2%, European efficiency 97.4%, battery-to-AC 98.0%
- 80 A whole-home backup port with sub-4 ms transfer
- AI-driven AFCI 3.0 arc-fault detection
- IP66, operating range -35 to +60 degrees Celsius
- Supports on/off-grid parallel operation
- Compatible with the Goodwe Lynx Home U HV battery stack, scalable to 108 kWh per inverter
- Compliant with AS/NZS 4777.2:2020
- Model: GW20K-ETA-G20
- Rated power: 20 kW / 20 kVA
- MPPTs: 4 (1/1/2/2 strings)
- MPPT range: 120 to 950 V
- Max efficiency: 98.2%
- Backup transfer time: Less than 4 ms
- Protection rating: IP66
- Weight: 38 kg
- MPPT count: 4
- Connectivity: WiFi
Suits
Three-phase residential solar plus battery installations.