Space saver, no clear weak spot
The Q-Cells Q.PEAK DUO BLK M-G11+ solar panel series is an advanced all-black solution that sets new standards in the aesthetics and efficiency of residential installations. By using the proprietary Q.ANTUM DUO Z technology, the manufacturer has eliminated gaps between cells, allowing for maximum utilization of the module surface and achieving higher power density. The application of this innovation solves the problem of limited roof space, delivering more energy from every square meter. Choosing this series also eliminates concerns about building aesthetics, offering a uniform, deep black that blends perfectly with modern roofing. It is distinguished from the competition by its 25-year product warranty and exceptional parameter stability in low light conditions. This is a product created for demanding private users for whom high resistance to degradation caused by external factors is key. These panels feature a reinforced aluminum frame, which ensures safety even in very difficult weather conditions. Thanks to the optimization of current flow and the reduction of internal losses, the M-G11+ series guarantees the highest reliability, becoming one of the most frequently chosen premium solutions on the Polish photovoltaic market.
Ranking
Signals from the data
Residential and shaded-installations.
Top 14% of the PERC 350-400 W segment, against a median of 199.0.
Top 15% of the PERC 350-400 W segment, against a median of -0.350.
Top 16% of the PERC 350-400 W segment, against a median of 19.90%.
The proprietary technology eliminates gaps between cells and uses half-cut cells, achieving up to 20.8% module efficiency at power ratings up to 400 Wp - higher than the comparable Heliene 108HC (20.5%) and substantially above the DMEGC GH400M10T-B48HST (15.48%).
As a Tier-1 bankable manufacturer (South Korea, founded 1999), Q-Cells offers a full 25-year warranty on both product and power output - a combination rarely matched by less established brands in this segment.
The panel is certified for snow loads up to 8100 Pa and wind loads up to 4000 Pa, ensuring safe operation under demanding climate conditions such as roofs with heavy snow accumulation.
The uniform black frame, backsheet, and cells don't come at the cost of power - the panel still delivers up to 400 Wp, which is uncommon in the all-black segment, where aesthetics usually reduce efficiency.
Optimized current flow and reduced internal losses deliver better energy yield under overcast skies and low-irradiance hours compared to standard PERC modules without this technology.
Introduced in 2021, the series was discontinued in 2023, which means limited availability for expanding existing installations and potential long-term challenges with warranty servicing and replacement parts.
PERC cells, despite reaching up to 20.8% efficiency, exhibit higher LID/LeTID degradation rates compared to newer n-type TOPCon cells, which dominate series released after 2023 and offer better long-term parameter stability.
The panel is monofacial only (is_bifacial: false), missing out on the potential additional 5-10% yield gain from rear-side light capture available in competing bifacial modules of the same power class.
- 20.3% module efficiency - 0.9pp better than the PERC 0-400W median of 19.4%
- At 203.3 W/m² power density, this panel generates 9.1 W/m² more per unit area than PERC 0-400W median (194.2 W/m²)
- Temperature coefficient of -0.34%/°C matches the PERC 0-400W median
- #11851 for efficiency, #8846 for temperature performance out of 14129 panels
Specifications
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Found 5 panels of the same or similar size to this one, within ±10 mm. See them here Found 36 panels of the same or similar size to this one, within ±25 mm. See them here Found 1938 panels of the same or similar size to this one, within ±50 mm. See them here Found 3760 panels of the same or similar size to this one, within ±100 mm. See them here
About the Q.PEAK DUO BLK M-G11+ series
These answers cover the whole series. Where a figure differs, the specification above is this module's own.