Astronergy has launched its latest 670 W power and 24.8% efficiency TOPCon PV module
Its quarter-cut cell-based layout offers improved performance under partial shading conditions and lowers the module’s peak hotspot temperature
The company claims superior performance under low or diffused light conditions compared to BC alternatives
Leading China-based TOPCon cell and module maker, Astronergy, unveiled its latest ASTRO N7 Pro series product for utility and commercial & industrial (C&I) applications in January 2026.
A key feature of this product is its quarter-cut (1/4) TOPCon cell-based layout. It is equipped with 264 (6 × 44) 1/4-cut cells, with a rated power output and efficiency of up to 670 W and 24.8%, respectively. Cutting each cell into 4 equal parts along its length reduces the current-carrying path (ribbon length) by 50% compared to half-cut cells, which further reduces potential heat losses. This characteristic also helps optimize the module’s rated maximum hotspot temperature and boosts long-term reliability under harsh environmental conditions. According to the company, given the higher number of cut cells (44) in each substring compared to the half-cut-cell-based counterparts, the susceptibility to activate the bypass diode is less under partial shading conditions. The company claims this leads to reduced shading impact and delivers up to 20% more power.
On the operational front, the company says this module outperforms its current back-contact (BC) cell-based counterparts under low- or diffuse-light conditions. While the BC cell structure uses non-diffusion insulation slots between the positive and negative electrodes on the rear side, which mitigates the impact of reverse voltage, it also increases current leakage. While it doesn’t quantify the numbers, Astronergy says its latest TOPCon cells with improved shunt resistance (Rsh) exhibit fewer paths to potential current leakage, typically during cloudy, early morning, or late afternoon periods. It adds that the product’s temperature coefficient of -0.26%/°C supports consistency in power generation, even in high-temperature field operations. According to internal assessments, this module can generate up to 6.05% additional specific yield (kWh/W) relative to its BC peers. Meanwhile, its bifaciality is up to 90%, higher than that of the BC modules due to the limitation of having both polarities situated on the rear side. The company claims this aspect yields an additional 1% to 3% bifacial power gain for its module.
Astronergy adopts low-temperature and low-stress flux-free gapless interconnection technology to optimize the cell-to-cell stringing process. This helps achieve high-density encapsulation and increases the active cell area compared to the module’s predecessors. It also distributes mechanical stress uniformly across the cell ribbons and mitigates the risk of hidden microcrack generation.
The company offers product and performance warranties of up to 15 and 30 years, respectively; however, the commercialization details are currently unknown.