The Sungrow SG110CX series are three-phase grid-tie inverters designed for large commercial and industrial installations, where stability is key, fast service is essential, and maximum yield from every string is crucial. The biggest advantage is 9 independent MPPTs - making it easier to design PV fields with different orientations and tilts, and minimizing losses during partial shading or uneven soiling.
High European efficiency means significantly more energy in typical operating conditions in Poland, not just in ideal laboratory settings. In practice, this translates to better energy production throughout the day, especially under variable sunlight conditions.
Remote monitoring and diagnostics are available (via Bluetooth app, RS485, and optionally WiFi or Ethernet), simplifying O&M oversight, enabling quick updates, and rapidly identifying issues on the strings. The construction with a high IP rating and surge protection for AC and DC supports safe operation in challenging conditions. The series includes required conformity certificates (among others, CE, EMC, LVD, EN 50549) and comes standard with the manufacturer's warranty.
Ranking
Specifications
Pros and cons
The inverter features 9 independent MPPT trackers with 18 string inputs, delivering exceptional design flexibility at 110 kW. It accommodates roof sections with varying azimuths and tilt angles without significant energy losses, and each MPPT supports up to 26 A - making it fully compatible with modern bifacial modules with ISC values exceeding 20 A.
A European efficiency of 98.5% (peak 98.7%) places the SG110CX among the top performers in the commercial 100+ kW inverter segment. By comparison, the reference SMA Sunny Tripower CORE2 (110 kW) achieves approximately 98.3% European efficiency - a 0.2 percentage point difference that translates to roughly 180-250 kWh of additional annual yield in a typical 500 kWp system under Polish irradiance conditions.
The IP66-rated enclosure with certified C5 corrosion resistance (the highest category per ISO 12944, covering marine and industrial environments) enables deployment in demanding locations such as chemical plants, coastal sites, and agri-PV installations. Most direct competitors in this power class offer only C3 or C4 as standard.
At just 18 kg, the inverter achieves a power density of approximately 6.1 kW/kg. This enables single-person installation without lifting equipment or a crane, and reduces structural mounting costs. Competing units in the same power class - such as the Huawei SUN2000-100KTL-M1 - weigh 32-35 kg.
A low MPPT start-up threshold of 250 V DC combined with a maximum input voltage of 1,100 V DC enables earlier energy production at dawn and extended generation at dusk compared to units with 350-400 V thresholds. The 1,100 V input range also allows longer string configurations, reducing DC cabling requirements and the number of string combiner boxes.
According to the official Sungrow datasheet, at an ambient temperature of 50 °C the inverter reduces its output power to 100 kW from the rated 110 kW - a reduction of approximately 9%. Under typical Polish climatic conditions this is rarely a concern; however, for industrial installations with limited ventilation or units mounted in enclosed, non-air-conditioned enclosures, this parameter must be accounted for in yield analysis.
Alternatives
About the SG110CX series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.