Ginlong Solis S6-GR1P series are single-phase grid-tie inverters designed for efficient operation in residential and small commercial installations. A key feature is their two independent MPPTs, facilitating system design with panels on different roof sections or areas subject to partial shading - each tracker can then maximize energy yield from its own string.
In practice, high European efficiency is crucial, meaning the performance closely matches real-world conditions in Poland - leading to more stable energy production under typical operating loads, not just ideal laboratory settings. The S6 series also supports modern data logging via USB and remote monitoring through the SolisCloud platform, featuring wired RS485 communication and optional wireless (WiFi, and depending on configuration, other modules). Furthermore, they feature multiple levels of protection, including AFCI to reduce fire risk, along with a highly sealed enclosure suitable for indoor and outdoor mounting. The series is available with market-leading warranties and meets the required network standards for grid connection.
Ranking
Specifications
Pros and cons
European Efficiency (EU eta) at 97.1% (max. 97.7%) indicates that the device achieves this performance under typical conditions for a Central European climate, rather than just under peak laboratory conditions. For comparison, a popular entry-level segment (e.g., Growatt MIN) declares an EU eta of ~96.5%, which, when installed at 6 kWp, translates to a real increase of approximately 36 kWh per year in favor of the S6-GR1P.
Two independent MPPT trackers with a maximum current of 16 A per string allow for operation with modern bifacial and high-power (600 W+) modules, which generate higher Isc currents. This enables flexible design of installations on pitched roofs or roofs with partial shading, without the need for bypass diodes that would burden the system.
Ginlong Solis maintains its BloombergNEF Tier 1 status (verified in Q1 2025) and, according to the 2023 Wood Mackenzie report, holds the top position in the residential inverter segment in terms of sales volume. This benefits both the installer and the prosumer, providing a stable supply chain, local service support, and the ability to secure financing for the investment.
The built-in AFCI (Arc Fault Circuit Interrupter) function detects arc faults in the DC circuit, which are a major cause of fires in PV installations. AFCI is not yet mandatory according to European network standards, so its presence as a standard feature (rather than an optional extra) distinguishes the S6 series from many competitors in a similar price range.
With a mass of approximately 8.3 kg and a height of 37 cm, the S6-GR1P is among the lighter single-phase inverters of this power rating on the market - for comparison, the SMA Sunny Boy 6.0 weighs approximately 16 kg. The IP66 enclosure allows for outdoor mounting without additional covers, which reduces installation time and labor costs.
The maximum DC input voltage is 550 V, while Fronius Primo (600 V) and newer SMA Sunny Boy (600 V) models offer a higher threshold. In practice, with modules between 440-500 Wp and strings mounted in low-temperature environments (where the Voc voltage increases), the installer must limit the number of modules in a string, which could increase the cost of wiring or necessitate a change in the system topology.
Alternatives
About the S6-GR1P series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.