GoodWe
GoodWe GW20K-ET Hybrid Inverter 20kW Three-Phase
GoodWe GW20K-ET Hybrid Inverter 20kW Three-Phase
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€2,726.35
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€2,726.35
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- Italy22% €3,326.14
- Germany19% €3,244.35
- France20% €3,271.62
- Austria20% €3,271.62
- Belgium21% €3,298.88
- Bulgaria20% €3,271.62
- Croatia25% €3,407.93
- Cyprus19% €3,244.35
- Czech Republic21% €3,298.88
- Denmark25% €3,407.93
- Estonia24% €3,380.67
- Finland25.5% €3,421.56
- Greece24% €3,380.67
- Hungary27% €3,462.46
- Ireland23% €3,353.41
- Latvia21% €3,298.88
- Lithuania21% €3,298.88
- Luxembourg17% €3,189.82
- Malta18% €3,217.09
- Netherlands21% €3,298.88
- Poland23% €3,353.41
- Portugal23% €3,353.41
- Romania21% €3,298.88
- Slovakia23% €3,353.41
- Slovenia22% €3,326.14
- Spain21% €3,298.88
- Sweden25% €3,407.93
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13 units at this price
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Delivery in 10-20 daysHybrid On-GridThree-phaseGoodWe
GoodWe GW20K-ET Hybrid Inverter 20kW Three-Phase
The GoodWe GW20K-ET is the 20kW three-phase hybrid inverter of the ET 15-30kW series, sized for large residential systems, apartment buildings and small businesses that want to pair photovoltaics with high-voltage storage (battery range 200-800V, 500V nominal). It features 2 MPPTs with 2 strings each, 30A per tracker, a maximum PV voltage of 1,000V and an MPPT range of 200-850V, for a photovoltaic array of up to 30,000W.
On the storage side it handles 50A in charge and discharge, with one independent battery input and charge/discharge power of up to 20,000W. During a grid outage the three-phase back-up output delivers 20,000VA (24,000VA for 60 s, 32,000VA for 3 s), with a temporary overload that helps start motors and pumps. Maximum efficiency is 98.0% (97.5% European), cooling is by smart fans with noise < 45 dB, the protection rating is IP66 and communications include Wi-Fi, LAN, Bluetooth to the portal, RS485 to the meter and RS485/CAN to the BMS.
Key features
High-voltage storageBattery range 200-800V with 50A continuous in charge and discharge and up to 20,000W of power.
2 MPPTs rated 30ATwo strings per tracker and PV voltage up to 1,000V: up to 30,000W of photovoltaic array.
Three-phase backup with overloadEmergency output of 20,000VA, with 20,000VA overload (24,000VA for 60 s, 32,000VA for 3 s).
Built-in protectionsType II DC and Type III AC surge arrester, DC switch, insulation and residual current monitoring, remote shutdown; AFCI available.
Built for outdoorsIP66, smart fan cooling and operating temperature from -35 to +60 °C.
Complete monitoringWi-Fi, LAN and Bluetooth to the SEMS portal, RS485 for the meter, RS485/CAN for the battery BMS.
Technical specifications
| Feature | Value |
|---|---|
| Product code | GW20K-ET_WIFILAN-20_AFCI |
| Model | GW20K-ET |
| Rated AC power | 20.000W |
| Max AC power | 22.000VA |
| Recommended max PV power | 30.000W |
| Max PV voltage | 1.000V |
| Start-up voltage | 200V |
| MPPT range | 200-850V |
| Rated PV voltage | 620V |
| Number of MPPTs | 2 |
| Strings per MPPT | 2 |
| Max current per MPPT | 30A |
| Max short-circuit current per MPPT | 38A |
| Battery type | Lithium, high voltage |
| Battery voltage | 500V nominal (range 200-800V) |
| Number of battery inputs | 1 |
| Max charge/discharge current | 50A / 50A |
| Max charge/discharge power | 20.000W / 20.000W |
| Backup/EPS power | 20,000VA rated - without the grid 20,000VA (24,000VA for 60 s, 32,000VA for 3 s) |
| Max backup current | 30.3A (36.4A for 60 s, 48.5A for 3 s) |
| Grid phase | Three-phase |
| Grid voltage | 380/400V (3L/N/PE) |
| Grid frequency | 50/60Hz (range 45-65Hz) |
| Max AC current to the grid | 31.9A |
| Max AC current from the grid | 30.3A |
| Power factor | ~1 (0.8 leading - 0.8 lagging) |
| Total harmonic distortion | <= 3,05 % |
| Maximum efficiency | 98.0 % |
| European efficiency | 97.5 % |
| Max battery-to-AC efficiency | 97.5 % |
| MPPT efficiency | 99.9 % |
| Surge arresters | DC Type II, AC Type III |
| AFCI | Optional (present in the AFCI version) |
| Protection rating | IP66 |
| Cooling | Smart fans (smart fan cooling) |
| Noise level | < 45 dB |
| Communication | Wi-Fi, LAN, Bluetooth (portal), RS485 (meter), RS485/CAN (BMS) |
| User interface | LED, app via WLAN |
| Night-time consumption | < 15W |
| Operating temperature | -35 °C ... +60 °C |
| Relative humidity | 0-95 % |
| Max altitude | 4.000 m |
| Dimensions (W x H x D) | 520 x 660 x 220 mm |
| Weight | 48 kg |
| Warranty | GoodWe Limited Warranty: 10 years for residential inverters manufactured from 1 January 2026 (5 years for earlier units), 5 years for commercial and industrial inverters |
Documentation
PDFDatasheet GW20K-ET_WIFILAN-20_AFCIOfficial manufacturer documentString sizing must stay within the MPPT voltage and current limits and follow the electrical design of the system. Installation and grid connection must be carried out by qualified personnel in accordance with the applicable standards.