Middle of its segment, weak in heat
The Mars series from CSUN is a line of monocrystalline modules built on half-cut PERC technology, designed to maximize energy yield while minimizing losses caused by shading effects and resistance. Splitting cells in half combined with a multi-busbar layout allows for more efficient current distribution and reduces the risk of microcracks, resulting in higher long-term reliability for the installation. Panels in this series stand out for their reinforced mechanical construction, backed by certifications for high wind and snow load resistance, making them well suited for both mountainous conditions and roofs exposed to strong gusts. Another key advantage is strong performance under low irradiance, which matters in a climate with frequent cloud cover and shorter winter days. The Mars series is aimed at both residential installation investors and larger commercial projects, where the ratio of generated power to roof area matters most. Thanks to its low temperature coefficient, the modules maintain stable output even on hot summer days, limiting the performance drops typical of cheaper solutions. It's a solid choice for installers seeking a proven balance between price, durability, and real-world energy yield in European conditions.
Ranking
Signals from the data
Commercial, utility-scale, shaded-installations and hot-climate.
Hot climates and owners who want a long output guarantee.
Bottom 10% of the PERC 650-700 W segment, against a median of -0.340.
Bottom 21% of the PERC 650-700 W segment, against a median of 30 yrs.
Half-cut cell design combined with a multi-busbar layout lowers resistive losses and microcrack risk, resulting in more stable energy output over the module's lifetime.
Certified resistance to high snow and wind loads makes the Mars Series well suited for mountain rooftops and locations exposed to strong gusts, where cheaper frames tend to fail sooner.
19 variants within one series allow the module to be matched to both small residential installations and large commercial projects without switching suppliers.
The PERC cell characteristics used in this series provide relatively stable output under diffuse light, which matters in the Polish climate with frequent cloud cover and short winter days.
Limited power loss at high module temperatures helps maintain steady output during hot summer days, reducing the seasonal drop typical of cheaper constructions.
Peak efficiency of 21.6% and 670 Wp max power fall behind competitors such as AIKO Comet 2U (670 Wp, 24.8%), meaning more module area is needed for comparable output at the same rated power.
The 12-year product / 25-year linear power warranty is standard for PERC technology but notably shorter than the 15/30-year terms now common among N-type TOPCon and HJT module manufacturers.
The series is built on PERC dating from 2021, while several tier-1 manufacturers (including peer comparable AIKO) have shifted to N-type cells with higher efficiency and lower LID degradation, which may affect the series' long-term competitiveness.
- At 21.2% efficiency, this panel is on par with typical PERC 650-700W modules
- At 212.5 W/m² power density, roof space requirements are typical for PERC 650-700W panels
- At -0.35%/°C, hot weather performance is typical for PERC 650-700W panels
- In the top 64% for efficiency among all PERC panels
Specifications
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
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