GoodWe
GoodWe GW15K-ET-20 Hybrid Inverter 15 kW Three-Phase
GoodWe GW15K-ET-20 Hybrid Inverter 15 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 GW15K-ET-20 Hybrid Inverter 15 kW Three-Phase
The GoodWe GW15K-ET-20 is the 15 kW three-phase hybrid inverter of the ET G2 series, designed for residential and small-business photovoltaic systems with high-voltage storage (battery range 150-720 V, 500 V nominal). It manages 3 independent MPPTs with 16 A per tracker, a maximum PV voltage of 1,000 V and an MPPT range of 120-850 V, and accepts up to 24,000 W of installed photovoltaic power.
On the storage side it reaches 40 A continuous in charge and discharge, with 24,000 W of charging power and 16,500 W of discharging power. The three-phase back-up function delivers 15,000 VA (up to 18,000 VA peak) and starts automatically in the event of a grid outage. Maximum efficiency is 98.2% (97.5% European), the protection rating is IP66 with natural convection cooling (no fans) and communications include Wi-Fi, LAN, Bluetooth, RS485 and CAN as standard. Type II surge arresters are built in on both the DC and the AC side; the AFCI for electric arc detection is available on the dedicated versions.
Key features
High-voltage batteryRange 150-720 V with 40 A continuous in charge and discharge: fast recharging and lower cable losses.
3 independent MPPTs3 trackers of 16 A each, with PV voltage up to 1,000 V, to handle roof sections with different orientations.
Three-phase backupDuring a grid outage the emergency output delivers 15,000 VA (up to 18,000 VA peak).
Built-in protectionsType II DC and AC surge arresters, insulation and residual current monitoring, anti-islanding and remote shutdown.
Full connectivityWi-Fi, LAN, Bluetooth, RS485 and CAN as standard for the SEMS portal, the meter and the battery BMS.
Outdoor installationIP66 and natural convection cooling without fans, with an operating temperature from -35 to +60 °C.
Technical specifications
| Feature | Value |
|---|---|
| Product code | GW15K-ET-20_AFCI |
| Model | GW15K-ET-20 |
| Rated AC power | 15.000 W |
| Max AC power | 15.000 VA |
| Recommended max PV power | 24.000 W |
| Max PV voltage | 1.000 V |
| Start-up voltage | 150 V |
| MPPT range | 120-850 V |
| Rated PV voltage | 620 V |
| Number of MPPTs | 3 |
| Strings per MPPT | 1 |
| Max current per MPPT | 16 A |
| Max short-circuit current per MPPT | 24 A |
| Battery type | Lithium, high voltage |
| Battery voltage | 500 V nominal (range 150-720 V) |
| Max charge/discharge current | 40 A / 40 A |
| Max charge/discharge power | 24.000 W / 16.500 W |
| Backup/EPS power | 15,000 VA (up to 18,000 VA peak) |
| Grid phase | Three-phase |
| Grid voltage | 400/380 V (3L/N/PE) |
| Grid frequency | 50/60 Hz |
| Max AC current to the grid | 21.7 A |
| Maximum efficiency | 98.2 % |
| European efficiency | 97.5 % |
| Max battery-to-AC efficiency | 97.5 % |
| MPPT efficiency | 99.5 % |
| Surge arresters | Integrated DC Type II and AC Type II |
| AFCI | Optional (present in the AFCI versions) |
| Protection rating | IP66 |
| Cooling | Natural convection |
| Communication | Wi-Fi, LAN, Bluetooth, RS485, CAN |
| User interface | LED, app via WLAN |
| Operating temperature | -35 °C ... +60 °C |
| Max altitude | 4.000 m |
| Dimensions (W x H x D) | 496 x 460 x 221 mm |
| Weight | 25 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 GW15K-ET-20_AFCIOfficial 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.