Strong in heat, no clear weak spot
The 108HC M10 SL All Black series from Heliene is a solar module built for residential installations, where roof aesthetics matter just as much as performance. The panel uses half-cut monocrystalline PERC cells, which lowers resistive losses and helps the module handle partial shading better, for example from chimneys, antennas, or neighboring buildings. The fully black color scheme of the frame, backsheet, and interconnect ribbons lets the panel blend visually with virtually any roof covering, an important advantage on single-family homes where the investor cares about the facade's look just as much as the electrical specs. The construction relies on 3.2mm tempered front glass and a reinforced aluminum frame, delivering high resistance to hail, snow load, and strong wind, and therefore durability under the demanding weather conditions typical of the Polish climate. The SL All Black series works equally well for new installations and retrofit projects, where the priority is a combination of high efficiency, aesthetics, and long-term reliability backed by international ISO9001 quality standards.
Ranking
Signals from the data
Residential and commercial.
Top 15% of the PERC 350-400 W segment, against a median of -0.350.
The 108 half-cut monocrystalline PERC cells reduce resistive losses and improve partial shading performance (chimneys, antennas, neighboring buildings) compared to full-size cell panels.
Heliene is the only North American module manufacturer listed as Tier-1 by Bloomberg New Energy Finance, with factories in Ontario and Minnesota, improving project bankability and supply chain stability.
The manufacturer offers a full 25-year product warranty alongside the 25-year power performance warranty - significantly longer than the typical 10-12 year product warranty offered by many residential-segment competitors.
The fully black frame, backsheet, and interconnect ribbons allow visual matching with any roof covering, an important selling point for single-family home installations where facade aesthetics matter to the investor.
Efficiency of 19.5-20.5% exceeds comparable modules such as MWG Mono (19.32%) and DMEGC GH400M10T-B48HST (15.48%) at the same 400 Wp maximum power.
Efficiency of 19.5-20.5% is clearly below Meyer Burger White (21.7%), which uses heterojunction (HJT) technology, meaning lower energy yield from the same roof area where mounting space is limited.
The series is built on older PERC technology, while Heliene already offers N-type (NTYP) variants rated 415-440W with lower LID degradation and better high-temperature performance - buyers seeking the latest technology have a stronger in-brand alternative.
The module is monofacial only, excluding additional energy gain from rear-side albedo reflection - an option available in competing series and particularly useful for ground-mount installations or bright flat roofs.
- Efficiency of 20.2% is 0.8pp above the PERC 0-400W median (19.4%)
- 202.3 W/m² power density - 7.9 W/m² more than PERC 0-400W median (194.4 W/m²), more power per roof area
- Temperature coefficient of -0.34%/°C matches the PERC 0-400W median
- At 21.5 kg, weight matches the PERC 0-400W median
- #11956 for efficiency, #8778 for temperature performance out of 14005 panels
Specifications
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Alternatives
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