GoodWe
GoodWe GW20K-ETA-G20 Hybrid Inverter 20 kW Three-Phase
GoodWe GW20K-ETA-G20 Hybrid Inverter 20 kW Three-Phase
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Businesses and non-Italian private customers: purchase with 22% VAT. The 10% rate is reserved for private customers resident in Italy — find out more.
Foreign companies entitled to 0% VAT: please write to info@litio.store.
Delivery in 10-20 daysHybrid On-GridThree-phaseGoodWe
GoodWe GW20K-ETA-G20 Hybrid Inverter 20 kW Three-Phase
The GoodWe GW20K-ETA-G20 is the 20 kW three-phase hybrid inverter module of the ESA storage system (high-voltage All-in-One): a single stackable solution in which the inverter and the lithium iron phosphate (LFP) batteries are integrated in the same cabinet. It features 4 independent MPPTs, a maximum PV voltage of 1,000 V with an extended MPPT range of 120-950 V, and accepts up to 40,000 W of installed photovoltaic power.
The battery works at high voltage (750 V nominal, range 700-950 V) with a charging power of up to 20.0 kW and a discharging power of up to 22.0 kW. The three-phase back-up output delivers 22.0 kVA (30.0 kVA for 10 s) and takes over with a transfer time of less than 4 ms. Maximum efficiency reaches 98.1% (97.3% European), the protection rating is IP66 with smart fan cooling, and connectivity includes Wi-Fi, LAN, Bluetooth, RS485 and CAN for the BMS as standard. Type II DC surge arresters (Type I+II optional) and Type II AC arresters are built in; AFCI and rapid shutdown are available as an option.
Key features
ESA All-in-One systemInverter module of the stackable GoodWe ESA storage system, with high-voltage LFP batteries integrated in the same cabinet.
4 MPPTs with 120-950 V rangeIndependent trackers (21/21/42/42 A) and PV voltage up to 1,000 V: up to 40,000 W of photovoltaic array.
Fast backupOn/off-grid transfer in less than 4 ms and emergency output of 22.0 kVA (30.0 kVA for 10 s).
High-voltage battery750 V nominal (700-950 V) with 20.0 kW in charge and 22.0 kW in discharge.
High efficiencyUp to 98.1% maximum efficiency and 97.3% European efficiency.
Connectivity and protectionsWi-Fi, LAN, Bluetooth, RS485 and CAN as standard; built-in Type II DC and Type II AC SPDs, IP66.
Technical specifications
| Feature | Value |
|---|---|
| Product code | GW20K-ETA-G20 |
| Model | GW20K-ETA-G20 |
| Rated AC power | 20 kW |
| Max AC power | 20 kVA |
| Recommended max PV power | 40.000 W |
| Max PV voltage | 1.000 V |
| Start-up voltage | 150 V |
| MPPT range | 120-950 V |
| Rated PV voltage | 750 V |
| Number of MPPTs | 4 |
| Max current per MPPT | 21/21/42/42 A |
| Battery type | Lithium iron phosphate (LFP), high voltage |
| Battery voltage | 750 V nominal (range 700-950 V) |
| Max charge/discharge current | 26,7 A / 29,4 A |
| Max charge/discharge power | 20,0 kW / 22,0 kW |
| Backup/EPS power | 20 kVA rated - off-grid 22.0 kVA (30.0 kVA for 10 s); with the grid present up to 43.5 kVA |
| On/off-grid switchover time | < 4 ms |
| Grid phase | Three-phase |
| Grid voltage | 220/380 V - 230/400 V (3L/N/PE), range 180-260 V |
| Grid frequency | 50/60 Hz |
| Rated current to the grid | 30,4 A @ 380 V |
| Max power drawn from the grid | 43.5 kVA |
| Power factor | 0.8 leading - 0.8 lagging |
| THDi | < 3 % |
| Maximum efficiency | 98.1 % |
| European efficiency | 97.3 % |
| Surge arresters | DC Type II (Type I+II optional), AC Type II |
| AFCI | Optional |
| Protection rating | IP66 |
| Cooling | Smart fans (smart fan cooling) |
| Communication | Wi-Fi, LAN, Bluetooth, RS485, CAN (BMS); optional 4G + Bluetooth |
| Protocols | Modbus-RTU, Modbus-TCP |
| User interface | LED, app via WLAN |
| Operating temperature | -35 °C ... +60 °C |
| Max altitude | 4.000 m |
| Installation | Wall- or floor-mounted |
| Dimensions (W x H x D) | 800 x 340 x 270 mm |
| Weight | 34 kg |
| Warranty | 10 years for residential inverters manufactured from 1 January 2026 (5 years for earlier units), according to the GoodWe Limited Warranty |
Documentation
PDFDatasheet GW20K-ETA-G20Official manufacturer documentString sizing must respect the MPPT voltage and current limits and the electrical design of the system. Installation and grid connection must be carried out by qualified personnel in accordance with the applicable standards.