Solid all-round for its segment
The DAH DHN-48Z16/DG(BW) solar panel series redefines efficiency standards through the use of unique, patented Full-Screen technology. Unlike traditional modules, this design lacks a protruding frame on the edges, which prevents the accumulation of dust and water and allows them to flow freely off the glass surface. This solves one of the industry's biggest problems - a drop in efficiency caused by dirt at the edges - ensuring higher annual yields without the need for frequent cleaning of the installation. At the heart of these modules are advanced N-type TOPCon cells, which offer significantly higher efficiency in low-light conditions and minimal power degradation over the long term. The use of Double Glass technology provides the panels with extreme durability and resistance to external factors, making them an excellent choice for both modern single-family homes and demanding commercial installations. This series stands out from the competition with its double-sided capability, or bifacial, which allows it to generate additional energy from rays reflected off the ground. It is an ideal solution for investors who value innovations that realistically increase system profitability throughout its entire service life, eliminating energy losses resulting from traditional, restrictive frame construction. Choosing these modules is a guarantee of reliability and maximum utilization of the available roof area.
Ranking
Signals from the data
Residential and commercial.
N-type TOPCon cells exhibit a Pmax temperature coefficient of -0.29%/°C, compared to the typical -0.35 to -0.40%/°C of PERC technology. This translates into measurably higher energy yield during hot summer months, when cell temperatures routinely exceed 50–60°C.
The manufacturer guarantees ≥87.4% of nominal power output after 30 years, with degradation ≤0.4%/year beyond year one. The comparable Waaree ARKA offers the same peak power of 455 W but at only 20.93% efficiency and a standard 25-year power warranty, resulting in a significantly weaker long-term performance balance.
The bifacial double-glass construction enables 5–25% additional energy generation from ground-reflected irradiance, depending on surface albedo. The rear glass layer eliminates the delamination risk inherent to glass-foil modules, effectively extending system service life beyond 30 years.
The 455 W variant achieves 22.77% efficiency, virtually identical to the Sunlike Solar SKT420~455M10-108D6 (22.80%) and IBC Solar LS-TA2 (22.80%), while offering a 5-year longer power warranty advantage (30 years vs. the competitors' standard 25 years).
DAH Solar has maintained BNEF Tier 1 status continuously at least since Q1 2025 (confirmed through Q3 2025), enabling bank financing for commercial projects and reducing manufacturer residual risk for institutional investors and system insurers.
The Double Glass construction (2+2 mm glass, 30 mm total thickness) results in a per-module weight of 23.9 kg — approximately 14–20% heavier than standard glass-foil modules in the same power class (~20–21 kg). For installations on older rooftops or lightweight steel structures, a structural load assessment by a licensed structural engineer is required.
- Efficiency of 21.8% matches the TOPCon 400-450W median
- At 217.7 W/m² power density, roof space requirements are typical for TOPCon 400-450W panels
- Temperature coefficient of -0.29%/°C matches the TOPCon 400-450W median
- Weight of 23.9 kg is 1.9 kg above TOPCon 400-450W median (22.0 kg) - verify structural support
- Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface
Specifications
Datasheet charts
Measured curves published by DAH Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 435 Wp appear here. The rest cover the whole series.
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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