Sofar Solar SOFAR 100-125KTLX-G4 series are three-phase grid-tie inverters designed for large commercial and industrial installations, both on rooftops and ground frames. What distinguishes them is 10 independent MPPTs, which facilitate the design of complex PV fields: they allow flexible connection of strings with different orientations and better mitigate losses during partial shading or uneven module soiling.
In practice, high European efficiency also matters - it means better performance in real-world operating conditions typical for Polish installations, not just in the lab, translating to more stable energy production throughout the year. For safety and reliability, the manufacturer has included integrated AC/DC overvoltage protection (Type II), as well as diagnostic functions such as I-V curve scanning, useful during maintenance and detecting performance drops.
Regarding connectivity, there are remote monitoring solutions available - including Modbus and online monitoring with communication via WiFi/Ethernet modules (depending on configuration). This is the series for investors who expect installation performance monitoring, grid compliance, and durability confirmed by certification.
Ranking
Specifications
Pros and cons
The series features 10 independent MPPT trackers with a maximum input current of 40 A each (20 DC inputs total) and supports up to 150% DC-side overloading. This enables flexible string configurations across varying orientations and azimuths without additional optimizers, reducing the BoS cost of commercial installations.
A European efficiency of 98.3% (peak efficiency 98.6%) positions the series among the top-tier commercial inverters in the 100-125 kW class. The European efficiency figure reflects performance under variable irradiance conditions (weighted according to Central European climate profiles), translating directly into higher annual energy yield under Polish climatic conditions.
The IP66-rated enclosure combined with C5-M corrosion resistance (per manufacturer specification) allows outdoor installation in harsh environments - coastal sites, industrial vicinities, and high-humidity zones - without the need for additional protective enclosures.
Sofar Solar's official warranty terms for the European market provide 120 months (10 years) of coverage from the date of purchase. This places the series on par with commercial-class competitors such as Sungrow and Huawei, and protects the investor throughout the typical project financing period.
The inverter carries certifications for key European markets: VDE-AR-N 4110 (Germany), G99 (UK), CEI 0-21/16 (Italy), EN/IEC 62109-1/2, and UNE 217001/217002 (Spain). Integrated Type II SPD surge protection on both AC and DC sides, an I-V curve scan function, and Modbus/Wi-Fi/Ethernet communication enable remote management and diagnostics without additional accessories.
The series provides 10 MPPT trackers (20 DC inputs), whereas its direct competitor, the Sungrow SG125HX, offers 12 MPPTs and 24 DC inputs within the same power class. In highly complex projects involving multiple exposure orientations or several PV arrays with differing tilt angles, this difference may necessitate the use of additional optimizers or a redesign of the string layout.
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About the SOFAR 100-125KTLX-G4 series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.