GoodWe GW20K-SDT-30 vs SMA Sunny Tripower X 20
AC power: GoodWe GW20K-SDT-30 20 kW, SMA Sunny Tripower X 20 20 kW. The GoodWe GW20K-SDT-30 is better on 5 of 9 comparable points.
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Both models in detail
Who wins where
- GoodWe GW20K-SDT-30
- SMA Sunny Tripower X 20
Biggest differences
| Fact | GW20K-SDT-30 | Sunny Tripower X 20 |
|---|---|---|
| MPPT voltage min. | 140 V | 345 V |
| Weight | 17.1 kg | 35 kg |
| MPP trackers | 2 | 3 |
| Max. input current per MPPT | 32 A | 24 A |
Score per area = position (0–100) relative to all 263 models in this category; higher is better.
| Technical specifications | GoodWeGW20K-SDT-30 | SMASunny Tripower X 20 |
|---|---|---|
| Performance | ||
| AC power | 20 kW1 | 20 kW2 |
| MPP trackers | 21 | 3✓2 |
| Efficiency | ||
| Max. efficiency | 98.5 %✓1 | 98.2 %2 |
| European efficiency | 98.2 %✓1 | 97.9 %2 |
| Noise | ||
| Noise | – | 59 dB(A)2 |
| Electrical | ||
| MPPT voltage min. | 140 V✓1 | 345 V2 |
| MPPT voltage max. | 1,000 V1 | 1,000 V2 |
| Max. input current per MPPT | 32 A✓1 | 24 A2 |
| Phases | 31 | 32 |
| Connectivity & smart | ||
| Wi-Fi / monitoring | Yes1 | Yes2 |
| Dimensions & weight | ||
| IP rating | IP661 | IP652 |
| Width | 530 mm1 | 728 mm2 |
| Height | 413 mm1 | 762 mm2 |
| Depth | 227 mm1 | 266 mm2 |
| Weight | 17.1 kg✓1 | 35 kg2 |
| Warranty & lifespan | ||
| Warranty | – | 5 years2 |
Frequently asked questions
Which is better: the GoodWe GW20K-SDT-30 or the SMA Sunny Tripower X 20?
AC power: GoodWe GW20K-SDT-30 20 kW, SMA Sunny Tripower X 20 20 kW. The GoodWe GW20K-SDT-30 is better on 5 of 9 comparable points.
What is the AC power of the GoodWe GW20K-SDT-30 and the SMA Sunny Tripower X 20?
GoodWe GW20K-SDT-30: 20 kW. SMA Sunny Tripower X 20: 20 kW.
Which is better on MPPT voltage min.: the GoodWe GW20K-SDT-30 or the SMA Sunny Tripower X 20?
GoodWe GW20K-SDT-30: 140 V. SMA Sunny Tripower X 20: 345 V.
Which is better on weight: the GoodWe GW20K-SDT-30 or the SMA Sunny Tripower X 20?
GoodWe GW20K-SDT-30: 17.1 kg. SMA Sunny Tripower X 20: 35 kg.
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How we collect and check this data →
Sources
- SDT G3 Series 4–20 kW string inverter (EMEA) – datasheet, EN-EMEA V2.1 (20250707) — GoodWe Technologies Co., Ltd. · accessed 27 Sept 2026
- Sunny Tripower X 12 / 15 / 20 / 25, 02/2025 — SMA Solar Technology AG · accessed 17 Oct 2026