Middle of its segment, weak in heat
The RS9H-M TOPCON series is built for installers and investors looking for modules that combine high efficiency with real resilience in demanding operating conditions. The panel is based on N-type TOPCon technology paired with half-cut cells and a multi-busbar grid, which reduces internal power losses and lowers the risk of damage from micro-cracks or broken busbars. Thanks to 3.2mm tempered glass with enhanced transmittance and anti-reflective properties, the series maintains stable energy output even under diffuse, low-light conditions, translating into higher yield on cloudy days or during early morning and dusk hours. The design stands out for its high mechanical strength, certified for wind and snow load, making it a solid fit both for roofs exposed to strong gusts and for regions with heavy snowfall. The panels also show strong PID resistance along with resistance to salt mist and ammonia exposure, making them a good choice for coastal and agricultural installations. The whole package is backed by a 30-year linear power warranty with low annual degradation, giving investors a predictable return and a lower LCOE over the system's lifetime.
Ranking
Signals from the data
Utility-scale, commercial and cold-climate.
Hot climates.
Bottom 22% of the TOPCon 700-750 W segment, against a median of -0.290.
- At 23.2% efficiency, this panel is on par with typical TOPCon 700-750W modules
- Power density of 231.8 W/m² matches the TOPCon 700-750W median
- At -0.30%/°C, hot weather performance is typical for TOPCon 700-750W panels
- #1424 for efficiency, #6093 for temperature performance out of 14005 panels
Specifications
Datasheet charts
Measured curves published by Resun Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 720 Wp appear here. The rest cover the whole series.
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Alternatives
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