The GoodWe SMT series are three-phase grid-tie inverters designed for commercial and industrial installations, where a flexible design, high operational availability, and rapid service are essential. What sets them apart is their fuse-free construction, which simplifies maintenance and minimizes downtime, along with comprehensive surge protection on both the DC and AC sides-critical for rooftop and ground-mounted systems. A key feature of the SMT series is multiple MPPT channels (up to six)-a significant advantage for panels with different orientations, varied strings, and partial shading, as each tracker can more precisely optimize the operating point and reduce energy losses due to mismatching. High European efficiency ensures better energy yield under typical operating conditions in Poland, beyond just laboratory settings. Additionally, the monitoring and communication features support remote data viewing and integration with management systems (e.g., network solutions and protocols for automation). This is the series for companies, farms, and larger facilities seeking stable energy production and precise control of their installations.
Ranking
Specifications
Pros and cons
The removal of string fuses on the DC side (replaced with solid-state capacitors) reduces the number of components susceptible to failure. In practice, this means fewer scheduled maintenance checks and shorter downtime during servicing - a significant advantage in commercial installations, where every hour of downtime results in financial losses.
Models with power outputs of 50-60 kW offer up to 6 MPPTs (models with power outputs of 25-36 kW offer 3 MPPTs), allowing for the independent operation of strings with different orientations, tilt angles, or levels of shading. Each tracker operates within a DC voltage range of 200-1000 V, minimizing losses due to mismatches in strings on complex roof layouts.
The declared maximum efficiency of 98.8% places the series among the leading commercial inverters. The ability to oversize the DC side up to 130% (and the AC side up to 110%) allows for greater utilization of morning and evening production hours with a relatively smaller investment in the inverter.
The built-in arc fault circuit interrupter (AFCI) is an optional factory-installed feature that meets the requirements of the NEC 2020 standard and reduces the risk of fire caused by damaged DC cables - which is particularly important in commercial building roof installations, where damage and insurance costs are high.
The upper limit of 1100 V DC allows for the creation of longer strings and full compatibility with large-format modules on wafers of 182 mm (M10) and 210 mm (G12), which typically generate more than 600 Wp of power per module. The initial voltage of 180 V ensures earlier operation under low illumination conditions.
The standard 10-year warranty (with an option to extend it to 15 or 20 years) only becomes active after the device is registered on the SEMS monitoring platform. If the installer or investor misses this step, the effective protection period is actually shorter - in contrast to European brands (e.g., SMA, Fronius), where the warranty is unconditional from the date of sale.
Alternatives
About the SMT series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.