Middle of its segment, needs the roof space
The Heliene 156HC M10 SL Bifacial series consists of dual-sided modules engineered to maximize energy harvest from every available square meter of roof or ground space. Thanks to half-cut monocrystalline PERC cells, these panels reduce power losses caused by partial shading and overheating, resulting in more stable energy production across variable operating conditions. A key advantage of the series is its bifacial construction, which captures light reflected from the ground surface to significantly boost the installation's total energy yield, especially on bright or reflective terrain. The modules feature a 3.2 mm tempered front glass with an anti-reflective coating, providing strong resistance to hail and intensive use while improving light absorption throughout the day. These panels also demonstrate high resistance to potential induced degradation (PID) and stable performance under elevated temperature and humidity, making them a solid choice for large-scale commercial and industrial installations. The 156HC M10 SL Bifacial series is well suited for projects where predictable, long-term performance and low lifetime energy cost matter most, backed by a long-term product warranty and linear power output warranty.
Ranking
Signals from the data
Utility-scale and commercial.
Roofs where every square metre has to count, tight roof space and owners who want a long output guarantee.
Bottom 11% of the PERC 550-600 W segment, against a median of 212.9.
Bottom 13% of the PERC 550-600 W segment, against a median of 21.29%.
Bottom 24% of the PERC 550-600 W segment, against a median of 27 yrs.
The panels capture light reflected from the ground, boosting total energy yield by several to over ten percent versus monofacial modules, particularly on bright rooftop or ground surfaces.
Splitting cells in half reduces power losses from partial shading and lowers hot-spot risk, resulting in more stable energy output under variable field conditions.
The 3.2mm front glass with anti-reflective coating delivers strong hail resistance and improved light absorption throughout the day, as confirmed in the manufacturer's official datasheet.
Heliene is listed on the Bloomberg NEF Tier 1 list, operates manufacturing facilities in Canada (Sault Ste. Marie), and has been in business since 2010, providing strong bankability for commercial project financing.
The modules feature high resistance to potential-induced degradation (PID) and stable performance under elevated temperature and humidity, making them suitable for large-scale commercial and industrial installations.
The series tops out at 21.3% efficiency, while comparable peers using TOPCon technology (Solarspace Lumina II, Ulica Solar TOPCon) reach 23.03% at the same 595 Wp power class - a roughly 1.7pp gap that means more roof or ground area is needed for the same installed capacity.
The product warranty is 15 years, shorter than the 25-year standard now offered by many Tier-1 manufacturers (including some of Heliene's own N-type lines), even though the linear power warranty still runs 25 years.
PERC cells show higher initial degradation (2% in year one, 0.5% annually thereafter) compared to newer N-type/TOPCon cells, which offer lower degradation rates and better long-term power stability.
- Efficiency of 20.8% matches the PERC 550-600W median
- At 207.6 W/m², this panel generates 5.3 W/m² less per unit area than PERC 550-600W median (212.9 W/m²)
- Temperature coefficient of -0.34%/°C matches the PERC 550-600W median
- Bifaciality factor of 70% can add 4-10% extra yield with reflective mounting surface
- In the top 75% for efficiency among all PERC 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.
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