The Sungrow SG30-33T-P2-CN series are three-phase on-grid (grid-tie) inverters designed for commercial installations and larger domestic systems, where reliable network operation and high yield repeatability are key. The application of three independent MPPTs facilitates the design of PV arrays with different orientations or partial shading - each string can operate with different module characteristics, helping to minimize losses and improve the energy balance throughout the day.
The global MPPT scanning enables faster identification of the optimal working point after changes in sunlight conditions. In practice, the high European efficiency translates to lower conversion losses under typical operating conditions in Poland, meaning more energy is actually fed into the grid annually.
In terms of durability, features like IP66 and AC/DC overprotection are important, as are solutions that ease service and commissioning. Monitoring is carried out via the iSolarCloud ecosystem, with wired communication (RS485) and integration options with data loggers. This is the series for installers and investors looking for a flexible string inverter for rooftops and small PV farms, without hybrid functions or energy storage capabilities.
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Sungrow ranked 1st in the BloombergNEF Inverter Bankability Survey 2025 for the sixth consecutive year, achieving 100% recognition among respondents. By end of 2025, the company surpassed 1,000 GW of cumulative installed capacity worldwide, providing strong assurance of long-term service support and spare parts availability.
Three isolated MPPT channels enable independent management of array sections with different orientations or partial shading, preventing cross-string power losses. The global MPPT scan function eliminates the risk of the algorithm becoming trapped at a local power maximum - particularly valuable under the variable cloud cover typical of the Polish climate.
The related SG25/30/33CX-P2 series achieves a maximum efficiency of 98.7% (per Sungrow and ENF Solar datasheets). The high European efficiency (weighted at partial load) minimizes conversion losses under the typical operating conditions encountered across Poland throughout the year.
The IP66 protection rating ensures resistance to heavy rain and dust ingress in flat-roof and open-field installations. Integrated DC- and AC-side surge protective devices (SPDs) eliminate the need to purchase external SPD units, reducing both BoS cost and system complexity.
The iSolarCloud ecosystem provides remote data monitoring, diagnostics, and firmware updates with no subscription fees - unlike, for example, SMA's Sunny Portal Premium license. RS485 integration with third-party data loggers enables straightforward connection to SCADA and BMS systems used in commercial installations.
The T P2-CN series does not include an integrated Wi-Fi or Ethernet communicator as standard - iSolarCloud monitoring requires the purchase of a separate data logger (e.g., WiNet-S or SolarLogger), adding approximately 300-500 PLN per installation point to the BoS cost and increasing the number of components to commission.
The series supports neither AC-coupling nor DC-coupling with a battery. Given growing interest in energy storage in both the commercial and prosumer segments in Poland, the absence of this capability may necessitate a full inverter replacement if a BESS is added to the system in the future.
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About the SG30-33T-P2-CN series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.