Fronius Symo 12.5-3-M vs GoodWe GW12K-ET-20
AC power: Fronius Symo 12.5-3-M 12.5 kW, GoodWe GW12K-ET-20 12 kW. The GoodWe GW12K-ET-20 is better on 6 of 10 comparable points.
Who wins where
- Fronius Symo 12.5-3-M
- GoodWe GW12K-ET-20
Biggest differences
| Fact | Symo 12.5-3-M | GW12K-ET-20 |
|---|---|---|
| Max. input current per MPPT | 27 A | 16 A |
| MPPT voltage min. | 200 V | 120 V |
| MPP trackers | 2 | 3 |
| Weight | 34.8 kg | 25 kg |
| MPPT voltage max. | 800 V | 850 V |
| AC power | 12.5 kW | 12 kW |
Score per area = position (0–100) relative to all 238 models in this category; higher is better.
| Technical specifications | FroniusSymo 12.5-3-M | GoodWeGW12K-ET-20 |
|---|---|---|
| Performance | ||
| AC power | 12.5 kW ✓ 1 | 12 kW 2 |
| Max. PV array power | 18.8 kWp 1 | 19.2 kWp ✓ 2 |
| MPP trackers | 2 1 | 3 ✓ 2 |
| Efficiency | ||
| Max. efficiency | 98 % 1 | 98.2 % ✓ 2 |
| European efficiency | 97.6 % ✓ 1 | 97.5 % 2 |
| Electrical | ||
| MPPT voltage min. | 200 V 1 | 120 V ✓ 2 |
| MPPT voltage max. | 800 V 1 | 850 V ✓ 2 |
| Max. input current per MPPT | 27 A ✓ 1 | 16 A 2 |
| Phases | 3 1 | 3 2 |
| Connectivity & smart | ||
| Hybrid (battery-ready) | – | Yes 2 |
| Backup power | – | Yes 2 |
| Wi-Fi / monitoring | Yes 1 | Yes 2 |
| Dimensions & weight | ||
| IP rating | – | IP66 2 |
| Width | 510 mm 1 | 496 mm 2 |
| Height | 725 mm 1 | 460 mm 2 |
| Depth | 225 mm 1 | 221 mm 2 |
| Weight | 34.8 kg 1 | 25 kg ✓ 2 |
Sources
- FRONIUS SYMO, M,06,0092,EN v27 Dec 2022 — Fronius · accessed 2 Oct 2026
- ET G2 Series 6–15 kW hybrid inverter (EMEA) – datasheet, EN-EMEA V1.1 (20241022) — GoodWe Technologies Co., Ltd. · accessed 27 Sept 2026