Solid all-round for its segment
Q-Cells Q.PEAK DUO BLK-G9 photovoltaic panels are a breakthrough solution utilizing Q.ANTUM DUO Z technology, which effectively eliminates empty spaces between individual cells. Thanks to this seamless layout, these modules achieve a significantly higher power density, which is crucial on the limited roof surface of single-family buildings. The use of monocrystalline half-cut cells in combination with an innovative twelve-busbar system minimizes internal energy losses and significantly increases the module resistance to micro-cracks. This series has been designed for the most demanding prosumer installations, where All-Black aesthetics must go hand in hand with maximum current efficiency. The completely black surface makes the panels blend discreetly into the dark expanses of modern roofs, solving the problem of visually unattractive installations. Compared to traditional competitive modules, the G9 series stands out for its excellent performance in diffuse light conditions and a favorable temperature coefficient, which guarantees higher energy yields on hot days. This is an ideal choice for investors focusing on uncompromising quality and long-term stability of electrical parameters, confirmed by durability certificates that significantly exceed standard market norms.
Ranking
Signals from the data
Residential, shaded-installations and hot-climate.
Eliminating gaps between cells and using a 12-busbar layout reduces resistive losses and increases resistance to microcracks, resulting in more stable long-term module performance.
The -0.35%/°C value outperforms typical older PERC modules (around -0.37 to -0.40%/°C), meaning less power loss at high panel temperatures and higher yields on hot days.
The fully black frame and backsheet allow discreet integration with dark roof surfaces, an important selling point in the residential segment where aesthetics matter alongside electrical performance.
Hanwha Q Cells (South Korea, founded 1999) is a bankable Tier-1 manufacturer, reducing financial risk for investors and easing bank financing approval for installations.
The Q.PEAK DUO BLK-G9 series was manufactured from 2020 to 2022 and has since been discontinued, meaning limited availability of identical replacement modules and potential difficulties with like-for-like warranty service.
The maximum 20.3% efficiency is lower than comparable models such as the JA Solar JAM60D10 (20.4%) or YS Solar SM-90 (21%), meaning slightly lower power output for the same roof area.
The module is monofacial only, while bifacial technology has become standard in newer premium series, enabling extra energy yield from ground reflection, especially in ground-mount or elevated installations.
The 25-year power warranty guaranteeing 86% output trails newer N-type TOPCon modules, which now offer up to 30-year warranties while retaining over 87.4% of nominal power.
- Efficiency of 19.7% is 2.1pp below the database median (21.8%)
- Power density of 197.3 W/m² is 20.8 W/m² below database median (218.1 W/m²) - needs more roof space
- Temperature coefficient of -0.35%/°C is 0.05pp worse than database median (-0.30%/°C) - higher losses in summer heat
- Weight of 17.5 kg (9.0 kg below database median of 26.5 kg) allows easier transport and roof mounting
- In the top 89% for efficiency among all N-type panels
Specifications
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
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About the Q.PEAK DUO BLK-G9 series
These answers cover the whole series. Where a figure differs, the specification above is this module's own.