Ginlong Solis S5-GC K-LV grid-tie inverters are designed for commercial and industrial applications, prioritizing stable performance, a high level of safety features, and easy production management. What sets them apart from many solutions is their multi-string MPPT, which simplifies the design of systems with panels facing different orientations and minimizes losses during partial shading - each tracker operates independently, maximizing the potential of PV strings. A key advantage is the high European efficiency, delivering real output under typical operating conditions in Poland, not just in laboratory tests. This series features comprehensive protections (including functions that reduce fire risk) and a weatherproof enclosure suitable for indoor and outdoor mounting. Remote monitoring via communication modules (e.g., WiFi/GPRS) and the portal/app is available for overseeing installations, facilitating maintenance and performance analysis. Models in this series are intended for investors seeking certified compliance with grid requirements and standardly offer multi-year warranties.
Ranking
Specifications
Pros and cons
Models with power outputs of 15-36 kW offer 3-4 independent MPPT (Maximum Power Point Tracking) strings with a voltage range of 200-1000 V (the 60 kW model can accommodate up to 8 MPPT strings), which allows for the use of arrays with different orientations and minimizes losses due to partial shading without the need for optimizers. The input voltage range of 200-1000 V provides designers with flexibility in selecting string lengths.
Models in the 25-36 kW range achieve a peak efficiency of 98.7%, which is competitive compared to comparable commercial inverters of tier-1 (SMA Sunny Tripower Core1 ~98.4%, Fronius Symo Advanced ~98.4%). This European efficiency translates to real performance in the Polish climate, where operation is often below STC (Standard Test Conditions).
The enclosure meets IP65 standards and ISO 12944 Class C5, which makes the series ideal for installation in harsh environmental conditions (industrial facilities, coastal areas, and areas near chemical processes). Class C5 is rare in the commercial segment and provides a real advantage over competitors that only offer Class C3.
The standard warranty is 10 years, with the option to extend it to 15 or 20 years for an additional fee. The manufacturer, Ginlong Technologies, is classified as a reliable tier-1 company by leading financial institutions, and is the 3rd largest manufacturer of PV inverters globally (as of 2025), which reduces the risk of lacking service support throughout the investment return period.
The series is equipped with AFCI (Arc Fault Circuit Interrupter) protection, ground fault monitoring, and precise anti-islanding functionality - a combination required by an increasing number of network operators and commercial building insurers in Poland for installations exceeding 50 kWp.
In the 15-23K-LV variant, the maximum efficiency is 97.8%, which is approximately 0.7-0.9 percentage points lower than in the 25-60 kW models of the same series and below the leading models in the segment (Huawei SUN2000-20KTL-M5: ~98.6%). For a typical 20 kWp installation, this difference translates to approximately 130-170 kWh/year less energy generation compared to the most efficient alternative.
Models with power outputs of approximately 25 kW or higher are equipped with cooling fans, which generate noise (a significant consideration when installing near office spaces) and require periodic filter inspection and cleaning. The competition (SMA STP 25000TL-30) offers fully passive cooling for similar power outputs.
Alternatives
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.