GoodWe GW20K-SDT-30 vs SolaX X3-HYBRID-15.0-D
AC power: GoodWe GW20K-SDT-30 20 kW, SolaX X3-HYBRID-15.0-D 15 kW. The GoodWe GW20K-SDT-30 is better on 7 of 9 comparable points.
Who wins where
- GoodWe GW20K-SDT-30
- SolaX X3-HYBRID-15.0-D
Biggest differences
| Fact | GW20K-SDT-30 | X3-HYBRID-15.0-D |
|---|---|---|
| Weight | 17.1 kg | 30 kg |
| AC power | 20 kW | 15 kW |
| MPPT voltage min. | 140 V | 180 V |
| Max. input current per MPPT | 32 A | 28 A |
| MPPT voltage max. | 1,000 V | 950 V |
Score per area = position (0–100) relative to all 238 models in this category; higher is better.
| Technical specifications | GoodWeGW20K-SDT-30 | SolaXX3-HYBRID-15.0-D |
|---|---|---|
| Performance | ||
| AC power | 20 kW ✓ 1 | 15 kW 2 |
| Max. PV array power | – | 30 kWp 3 |
| MPP trackers | 2 1 | 2 3 |
| Efficiency | ||
| Max. efficiency | 98.5 % ✓ 1 | 98 % 3 |
| European efficiency | 98.2 % ✓ 1 | 97.7 % 3 |
| Electrical | ||
| MPPT voltage min. | 140 V ✓ 1 | 180 V 3 |
| MPPT voltage max. | 1,000 V ✓ 1 | 950 V 3 |
| Max. input current per MPPT | 32 A ✓ 1 | 28 A 3 |
| Phases | 3 1 | 3 2 |
| Connectivity & smart | ||
| Hybrid (battery-ready) | – | No 2 |
| Backup power | – | Yes 3 |
| Wi-Fi / monitoring | Yes 1 | Yes 3 |
| Dimensions & weight | ||
| IP rating | IP66 1 | IP65 3 |
| Width | 530 mm 1 | 503 mm 3 |
| Height | 413 mm 1 | 503 mm 3 |
| Depth | 227 mm 1 | 199 mm 3 |
| Weight | 17.1 kg ✓ 1 | 30 kg 3 |
Sources
- SDT G3 Series 4–20 kW string inverter (EMEA) – datasheet, EN-EMEA V2.1 (20250707) — GoodWe Technologies Co., Ltd. · accessed 27 Sept 2026
- ENA Type Test Register (inverters) — Energy Networks Association (ENA) · accessed 27 Sept 2026
- SolaX X3-HYBRID G4 Datasheet, 3.8 — SolaX Power · accessed 29 Sept 2026