The Ginlong Solis S5-GC-K-LV series is a three-phase grid-tie inverter designed for commercial and industrial installations, where project flexibility and reliable operation in variable conditions are essential. The application of 4 independent MPPTs facilitates managing multiple string configurations with modules of different orientations and tilts, while also effectively minimizing losses due to partial shading, as each tracker can optimize its respective section.
In practice, high European efficiency also delivers the advantage, meaning genuinely better performance in typical operating conditions in Poland, not just in an ideal laboratory setting. This series offers comprehensive diagnostic features, including string monitoring and I-V curve analysis, which accelerates the detection of anomalies. For installation monitoring, it is supported by SolisCloud, along with communication via WiFi or GPRS (optional), enabling remote updates and control. Additional safety is ensured by features such as AFCI and an IP66-rated enclosure, and the entire product comes with a 10-year warranty.
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The S5-GC(25-36)K-LV models achieve a maximum efficiency of 98.4%, while the S5-GC60K-LV model achieves 98.5% efficiency, with a CEC (cumulative efficiency) of 98.1%. These are among the highest efficiency values for commercial string inverters, directly translating to higher annual energy yield under typical partly cloudy conditions common in Poland.
Four individual MPPT (Maximum Power Point Tracking) units allow for connecting strings with different orientations, inclines, and lengths without interference, which is particularly important in C&I (Commercial and Industrial) installations on multi-pitched roofs. Each tracker optimizes its own section, minimizing losses due to partial shading.
Ginlong Solis holds a BloombergNEF Tier 1 Bankable Inverter Manufacturer status (verified in 2025) and is the third-largest PV inverter manufacturer in the world. This status facilitates obtaining bank financing for projects and provides assurance of long-term technical support and component availability.
The built-in AFCI (arc-fault circuit interrupter) automatically detects electrical arcs in the DC circuit and disconnects the inverter, reducing the risk of a fire in the installation. The IP66 enclosure provides full protection against dust and strong water streams, allowing for outdoor mounting without additional enclosures.
The SolisCloud platform offers remote monitoring, over-the-air (OTA) firmware updates, and inverter control via WiFi or, optionally, GPRS. Integrated I-V curve scanning and chain monitoring enable quick identification of faulty modules or degradation without the need for on-site service visits.
The standard 10-year warranty is typical for the C&I (Commercial and Industrial) sector. However, manufacturers such as SMA and Fronius offer the option to extend the warranty up to 20 years as part of a single service agreement. For commercial installations with an expected lifespan of 20-25 years, this means the need to negotiate an additional service contract after the initial 10-year period.
Solis has already launched its 6th-generation platform (S6) on the market, featuring expanded communication capabilities and higher DC input power. The S5-GC-K-LV series remains available for sale, but it may have a shorter software update and component availability horizon compared to its competitors, potentially lasting less than 10 years.
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About the S5-GC-K-LV series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.