Space saver, no clear weak spot
The WST-NGX72-AB series is WINAICO's answer to utility-scale solar farms, where maximizing energy yield per square meter of land is critical. The module is built on TOPCon technology and N-type half-cut cells, delivering lower resistive losses, better performance under partial shading, and reduced sensitivity to microcracks. Thanks to its bifacial glass-glass design, the panel also captures light reflected from the ground, boosting energy production without expanding the installation footprint - a real advantage for ground-mount projects where every watt per hectare counts. Low annual degradation combined with a 30-year linear power warranty allows investors to more precisely calculate LCOE and long-term return on investment. The construction also stands out for its PID and salt-mist corrosion resistance, making it suitable for demanding environments, including coastal and industrial installations. MC4-EVO2 connectors and a maximum system voltage of 1,500 V simplify integration with modern inverters and MPPT systems, helping to reduce BoS costs. This series is aimed at investors and EPC contractors seeking stable, predictable performance in commercial and utility-scale projects.
Ranking
Signals from the data
Roofs where every square metre counts and small roofs that need every watt.
Top 17% of the TOPCon 550-600 W segment, against a median of 224.4.
Top 22% of the TOPCon 550-600 W segment, against a median of 22.44%.
N-type half-cut cell technology reduces resistive losses and improves micro-crack resilience and partial-shading performance; combined with 22.8-23% efficiency, the module sits in the upper tier of the 595 Wp bifacial segment.
The 30-year linear power warranty exceeds the industry-standard 25 years offered by many tier-1 manufacturers, letting investors model LCOE more precisely over a 25-30 year utility-scale project horizon.
The double-sided glass-glass design captures ground-reflected light, boosting energy yield without increasing installed footprint - a meaningful advantage in ground-mount projects where watts per hectare are critical.
Confirmed resistance to PID degradation and salt corrosion allows deployment in harsh environments, including coastal and industrial sites, where standard modules degrade faster.
WINAICO is a bankable Taiwanese tier-1 manufacturer founded in 2003, translating into lower financing risk for banks and infrastructure funds compared to less established brands in the peer set (e.g., Sunova).
At the same max power rating of 595 Wp, competitors Heliene (144HC M10 NTYP SL Bifacial, 23.02%) and Solarspace (Lumina II, 23.03%) achieve slightly higher efficiency than the WST-NGX72-AB (22.8-23%). The gap is small but, at utility-scale MW volumes, translates to a smaller land footprint for the leading peers at equal installed capacity.
- Efficiency of 22.8% matches the TOPCon 550-600W median
- 228.4 W/m² power density - 4.0 W/m² more than TOPCon 550-600W median (224.4 W/m²), more power per roof area
- Temperature coefficient of -0.30%/°C matches the TOPCon 550-600W median
- Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof
- In the top 20% for efficiency among all TOPCon panels
Specifications
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.
Found 2335 panels of the same or similar size to this one, within ±10 mm. See them here Found 2377 panels of the same or similar size to this one, within ±25 mm. See them here Found 2391 panels of the same or similar size to this one, within ±50 mm. See them here Found 2561 panels of the same or similar size to this one, within ±100 mm. See them here
About the WST-NGX72-AB series
These answers cover the whole series. Where a figure differs, the specification above is this module's own.