The GoodWe SMT G2 series are three-phase grid-tie inverters designed for commercial installations - from rooftop systems on warehouses and offices to larger ground-mounted setups. What sets them apart is their multi-string MPPT operation (with either 4 or 6 trackers, depending on the variant), which simplifies string design across different roof orientations and minimizes energy losses during partial shading or uneven sun exposure.
High European efficiency is also a key factor in practice - ensuring consistently good energy conversion in typical operating conditions in Poland, not just in ideal laboratory settings. The SMT G2 series supports modern high-current modules and features a weather-resistant casing for outdoor mounting, along with comprehensive AC and DC safety features (including surge protection and optional AFCI arc detection).
For service and owners, monitoring and communication are crucial - remote monitoring via an app and flexible integration options (e.g., WiFi or Ethernet). This is the series for companies seeking reliable energy yields and trouble-free operation.
Ranking
Price offers
| Shop | Country | Price | Per kW | Stock | Offer updated | Link to shop |
|---|---|---|---|---|---|---|
| www.frexolaire.com | France | 3 285.98 € incl. VAT | 41.07 €/kW | In stock | 3d ago | Visit shop |
Specifications
Pros and cons
The SMT G2 series achieves a maximum efficiency of 98.8%, placing it among the top performers in the commercial segment - comparable to the SMA Tripower Core1 (98.7%) and exceeding the Fronius Tauro (98.5%). In practice, this translates to minimal conversion losses across the entire power range.
Depending on the power variant (35-50 kW: 4 MPPT, 60-80 kW: 6 MPPT) and the voltage range of 160-1000 V, the inverter allows for the independent operation of arrays with different orientations and tilt angles. This minimizes energy losses due to partial shading - a crucial factor for roofs with obstructions (windows, air conditioning units).
The 180 V starting voltage (compared to the typical 200 V used by many competitors) and the permitted DC oversizing of 130% of nominal power allow for earlier and longer energy generation in the evening. Furthermore, the 110% AC overload capacity reduces clipping losses in flat-roof layouts with a high DC/AC ratio.
The robust IP66 enclosure allows for outdoor mounting without the need for additional protection. Replacing electrolytic capacitors with solid capacitors extends the lifespan of the device, and the design with fuses on the DC side eliminates one of the main service points during long-term operation.
GoodWe maintains its Tier 1 BloombergNEF status for Q1 2026, confirming the bankability of projects financed with debt without recourse. The accumulated installed capacity of 100 GW (as of Q1 2025) provides extensive operational data necessary for commercial due diligence of C&I installations.
In an independent ranking of Australian installers in 2025, GoodWe ranked behind Fronius and Sungrow in terms of the speed of their service response and the availability of replacement equipment. For commercial installations exceeding 35 kW, where any downtime results in measurable revenue losses, this falls short of the standard offered by SMA and Fronius (guaranteed equipment swap within 3-5 working days in the European network).
Alternatives
About the GoodWe SMT G2 series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.