The Ginlong Solis S6-GC3P-LV-ND is a three-phase grid-tie inverter designed for three-phase 220/23ery networks, where stable operation and flexible string design are key. Depending on the unit variant, they offer multi-channel MPPT (3 or 4), facilitating better yields with different roof orientations, uneven soiling, or partial shading - each tracker enables independent power point optimization.
A noteworthy feature is the voltage stabilization function for weak grids, allowing for more reliable operation under worse grid conditions. The high European efficiency translates to lower losses in typical operating conditions in Poland, thus higher annual energy production.
For safety, features such as AFCI and intelligent string monitoring (including string I-V curve scan) are implemented. Remote control is possible via SolisCloud, and communication can be achieved through RS485 and network modules (e.g., WiFi/Ethernet - depending on configuration). This is an excellent choice for small and medium-sized commercial installations.
Ranking
Specifications
Pros and cons
The S6-GC3P(15-20)K03-LV-ND variant achieves European efficiency levels of 97.8%, placing it in the top quartile of commercial three-phase inverters (peer comparisons: SMA Sunny Tripower: 97.2-97.6%, Fronius Symo GEN24: ~97.5%). This translates to a realistically higher annual yield under typical Polish conditions (variable cloud cover, operation within 20-80% of nominal power).
The series offers 3 or 4 independent MPPT channels with an input current of up to 21 A per tracker, ensuring full compatibility with bifacial and high-power modules (>600 Wp). Independent optimization per tracker minimizes losses under different orientations or partial shading - which is critical for commercial rooftop installations with multi-faceted roofs.
The built-in AFCI (Arc Fault Circuit Interrupter) detects electrical arcs and is required by NEC 2017+ standards, as well as increasingly by Polish insurers for commercial properties. The I-V curve scanning function allows for remote diagnosis of string status without the need for a service technician, reducing the time required to locate the fault.
The built-in automatic voltage stabilization (AVS) function allows for stable operation even when the network voltage deviates outside the standard range specified in EN 50160. This is a significant advantage for commercial installations connected to weaker distribution network nodes in rural and industrial areas of Poland.
Ginlong (Solis) Technologies is listed on the BloombergNEF Tier 1 PV Inverter Manufacturers list (confirmed Q1 2025; the company celebrates its 20th anniversary with this status in 2025) and is the third-largest inverter manufacturer in the world. The Tier 1 status provides access to project financing from banks and infrastructure funds without additional security requirements.
Network communication with the SolisCloud platform is achieved through optional WiFi or Ethernet modules (which are not factory-installed in every model), resulting in additional costs and configuration verification requirements for custom orders. Competitors (such as SMA with SMA Energy Meter and Fronius with WiFi cards) offer network connectivity without additional charges.
Alternatives
About the S6-GC3P-LV-ND series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.