The GoodWe ET 15-30 kW series is a high-voltage three-phase hybrid inverter designed for high-end residential, small commercial and light industrial use. At the heart of a storage solution, it simultaneously manages photovoltaic generation, the charge/discharge of a high-voltage battery and the backup of priority loads in the event of a grid outage. The range covers four power ratings: GW15K-ET (15 kW), GW20K-ET (20 kW), GW25K-ET (25 kW) and GW29.9K-ET (29.9 kW).
Why choose the ET series?
- Three-phase 400 V (380 / 400 V, 3L / N / PE) with a maximum efficiency of 98.0 % (European efficiency 97.5 %).
- High-voltage battery Li-Ion 200 ~ 800 V (nominal voltage 500 V), compatible in particular with GoodWe Lynx Home F.
- Up to 3 MPPT and DC oversizing up to 150 % to make the most of large photovoltaic arrays.
- Backup function with temporary overload to start demanding loads (pumps, motors).
- Peak shaving and built-in dry contact to control external loads (heat pump, etc.).
- Enhanced safety: Type II DC surge protection, built-in DC switch, optional AFCI, IP66 rating.
Technical specifications
| Model |
GW15K-ET |
GW20K-ET |
GW25K-ET |
GW29.9K-ET |
| Rated AC power |
15 kW |
20 kW |
25 kW |
29.9 kW |
| Max PV power |
22,500 W |
30,000 W |
37,500 W |
45,000 W |
| Number of MPPT |
2 |
2 |
3 |
3 |
| Max PV voltage |
1,000 V (MPPT range 200 ~ 850 V) |
| Three-phase output |
380 / 400 V, 3L / N / PE — 50 / 60 Hz |
| Max AC current (grid) |
23.9 A |
31.9 A |
39.9 A |
43.3 A |
| Battery |
HV Li-Ion — 200 ~ 800 V (nominal 500 V) |
| Max charge / discharge current |
50 A |
50 A |
50 × 2 A |
50 × 2 A |
| Max efficiency |
98.0 % (European 97.5 %) |
| Protection rating |
IP66 |
| Operating temperature |
-35 ~ +60 °C |
| Dimensions (W × H × D) |
520 × 660 × 220 mm |
| Weight |
48 kg |
48 kg |
54 kg |
54 kg |
Data from the GoodWe ET 15-30 kW datasheet. Values subject to change depending on versions; sizing study validated by SINES Export before order.
Operating modes & certifications
The ET 15-30 kW operates in grid-connected (on-grid) mode for self-consumption and consumption optimisation, in backup mode to supply priority loads during an outage, and allows stand-alone / off-grid operation depending on the battery and PV configuration. The built-in dry contact controls external loads (heat pump) and the peak shaving function caps power demand peaks.
- Non-isolated topology, intelligent fan cooling, max altitude 4,000 m.
- Built-in protections: anti-islanding, AC overload, AC short circuit, AC overvoltage, PV insulation detection, residual current monitoring.
- Type II DC surge protection, Type III AC surge protection, built-in DC switch, optional AFCI and rapid shutdown.
- BMS RS485 / CAN communication, RS485 meter, WiFi + LAN + Bluetooth supervision via the SEMS Portal app.
GoodWe distributor and wholesaler
SINES Export, GoodWe distributor and wholesaler, supplies the complete inverter + Lynx Home high-voltage battery system, validates its sizing and supports professionals worldwide. Also discover our selection of solar inverters and the full GoodWe range.
