Efficiency leader, no clear weak spot
The CHSM66N(DG)/F-BH ASTRO N8 series consists of dual-glass bifacial modules designed for large ground-mount installations, utility-scale power plants, as well as agri-PV projects and floating solar farms. The panel uses n-type TOPCon 4.0/5.0 cell technology, combining high conversion efficiency with low power degradation over time, resulting in stable energy yield throughout the entire service life. Thanks to bifacial power generation, the module captures light reflected from the ground, increasing the overall energy yield of the installation without enlarging its footprint. A key advantage of the series is its low Voc design, which allows more modules to be connected in a single string, reducing wiring, mounting structure, and overall BoS costs, thereby lowering the system's LCOE. The design, based on 132 half-cut cells arranged in a 6x22 layout, provides better shading tolerance and lower resistive losses. The panel is backed by a 30-year linear power warranty and a 15-year product warranty, and its low annual degradation (up to 0.4%) confirms the high durability of materials and manufacturing quality. This is a solution dedicated to commercial and utility-scale investors who expect maximum power density on limited roof or ground area.
Ranking
Signals from the data
Utility-scale and commercial.
Top 10% of the TOPCon 700-750 W segment, against a median of 23.00%.
Top 11% of the TOPCon 700-750 W segment, against a median of 230.2.
The ASTRO N8 series matches the top performers in the utility-scale segment - Suntech's Ultra T 2.0 also reaches 735 Wp and 23.7% efficiency, while Jinko Tiger Neo and BYD HALO HSBK-33 cap out at 23.66%.
N-type cell technology delivers lower LID/LeTID degradation and better high-temperature performance than legacy PERC cells, and with annual degradation of up to 0.4% this translates into more stable energy yield over the module's lifetime.
The module captures reflected (albedo) irradiance from the ground, boosting overall energy yield for ground-mount, agri-PV, and floating solar projects without increasing installed footprint.
The series carries a 30-year linear power warranty and a 15-year product warranty (additionally backed by an international insurer per Astronergy's 2025 documentation), matching the best offers among tier-1 manufacturers.
Lower per-cell voltage allows more modules per string, reducing wiring, MC4 connectors, and racking requirements, which lowers overall balance-of-system (BoS) costs and helps push down LCOE.
The panel's large dimensions and weight require reinforced mounting structures and specialized handling equipment for transport and installation, potentially increasing logistics and labor costs compared to smaller residential modules.
- Efficiency of 23.5% matches the TOPCon 700-750W median
- 235.0 W/m² power density - 4.8 W/m² more than TOPCon 700-750W median (230.2 W/m²), more power per roof area
- At -0.29%/°C, hot weather performance is typical for TOPCon 700-750W panels
- Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface
- Ranked #716 out of 14005 panels for efficiency in the database
Specifications
Datasheet charts
Measured curves published by Astronergy in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 730 Wp appear here. The rest cover the whole series.
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.
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