The Ginlong Solis S6-GC series are modern grid-tie inverters designed for commercial and industrial installations, where high energy production and reliable service support are essential. This product stands out from the competition due to its multi-string MPPT tracking (depending on the variant), which facilitates optimising energy yields when dealing with different string orientations, varied roof pitches, or partial shading - without the need to complicate the design.
In practice, high European efficiency is also crucial, meaning truly better energy utilisation from modules under typical operating conditions in Poland, not just in a laboratory setting. The S6-GC inverters offer advanced diagnostic features, such as string monitoring and I-V curve scanning, accelerating the detection of performance drops.
In terms of communication, popular interfaces (including RS485, as well as Wi-Fi and Ethernet options) are available, along with remote monitoring via SolisCloud and the ability to perform firmware updates. This is the series for investors and installers who demand safety (including AFCI arc detection), stable operation, and predictable operating costs, coupled with a standard warranty depending on the market and distribution.
Ranking
Specifications
Pros and cons
S6-GC models achieve a maximum efficiency of 98.8%, and CEC efficiency (reflecting real operating conditions) at approximately 98.3%. This is comparable to leading competitors (Huawei SUN2000, SMA Sunny Tripower), resulting in real additional kilowatt-hours per year for commercial installations exceeding 100 kWp.
Depending on the configuration, the series offers between 3 (25-36 kW models) and 10 independent MPPT strings with a wide voltage range of 160-1000 V DC. This allows for flexible design of installations on multiple rooftops with different orientations and inclines without the need for optimizers - which directly reduces the BOS project cost.
The S6-GC series is standardly equipped with AFCI (Arc Fault Circuit Interruption) functionality - it automatically interrupts power conversion when an arc is detected in the DC circuit. This requirement is increasingly enforced by insurance companies and developers of commercial and industrial (C&I) projects, as well as by the IEC 63027 standard. Many competing models in the Solis price range offer AFCI only as a paid option.
Ginlong Solis, as the world's third-largest manufacturer of photovoltaic inverters (according to 2023 data), is consistently ranked on the BNEF Tier 1 Inverter Manufacturers list. This ranking is required by most banks and financial institutions that fund PV projects exceeding 500 kWp, which eliminates the risk of project rejection during due diligence.
The SolisCloud platform enables remote monitoring of strings and direct I-V curve scanning directly from the inverter - without the need to purchase an external analyzer. This feature allows for the detection of degradation, faulty modules, or incorrect connections without the need for on-site service visits, which reduces the operating expenses (OPEX) of commercial installations.
According to data from ENF Solar, the S6-GC(100-125)K models have been discontinued by Ginlong Solis Technologies. This means that for projects requiring these specific power ratings, there will be limited availability of the equipment, longer lead times for spare parts, and potential difficulties with maintenance over the 15-20 year lifespan of the installation.
Alternatives
About the S6-GC series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.