Fox ESS T25-G3 vs GoodWe GW20K-SDT-30
AC power: Fox ESS T25-G3 25 kW, GoodWe GW20K-SDT-30 20 kW. The GoodWe GW20K-SDT-30 is better on 3 of 8 comparable points.
Who wins where
- Fox ESS T25-G3
- GoodWe GW20K-SDT-30
Biggest differences
| Fact | T25-G3 | GW20K-SDT-30 |
|---|---|---|
| AC power | 25 kW | 20 kW |
| Weight | 21 kg | 17.1 kg |
| Max. input current per MPPT | 28 A | 32 A |
Score per area = position (0–100) relative to all 238 models in this category; higher is better.
| Technical specifications | Fox ESST25-G3 | GoodWeGW20K-SDT-30 |
|---|---|---|
| Performance | ||
| AC power | 25 kW ✓ 1 | 20 kW 2 |
| Max. PV array power | 37.5 kWp 1 | – |
| MPP trackers | 2 1 | 2 2 |
| Efficiency | ||
| Max. efficiency | 98.6 % ✓ 1 | 98.5 % 2 |
| European efficiency | 97.8 % 1 | 98.2 % ✓ 2 |
| Electrical | ||
| MPPT voltage min. | 140 V 1 | 140 V 2 |
| MPPT voltage max. | 1,000 V 1 | 1,000 V 2 |
| Max. input current per MPPT | 28 A 1 | 32 A ✓ 2 |
| Phases | 3 1 | 3 2 |
| Connectivity & smart | ||
| Wi-Fi / monitoring | – | Yes 2 |
| Dimensions & weight | ||
| IP rating | IP65 1 | IP66 2 |
| Width | 370 mm 1 | 530 mm 2 |
| Height | 480 mm 1 | 413 mm 2 |
| Depth | 183.5 mm 1 | 227 mm 2 |
| Weight | 21 kg 1 | 17.1 kg ✓ 2 |
Sources
- T SERIES(G3) THREE-PHASE INVERTER, V2.5 | 2026/07/03 — Fox ESS · accessed 29 Sept 2026
- SDT G3 Series 4–20 kW string inverter (EMEA) – datasheet, EN-EMEA V2.1 (20250707) — GoodWe Technologies Co., Ltd. · accessed 27 Sept 2026