Solid all-round for its segment
The DAH DHN-48Z20/DG(BB) 425-455W series is a range of modules designed for maximum aesthetics and stable energy production in real rooftop conditions. They are characterized by a full black appearance and a design that seamlessly integrates with the roof, ensuring a consistent look, even on modern buildings. The use of N-type cells in TOPCon technology helps minimize losses over time and maintain high efficiency over a longer period, which will be appreciated by those planning long-term installations. These modules are also bifacial - they can utilize reflected light, which is important on bright roofs, terraces, and ground-based structures. Another advantage is the glass-glass construction, which improves resistance to loads and environmental conditions, reducing the risk of degradation. This series is suitable for investors who want to combine premium aesthetics with predictable energy yield, whether in single-family homes or smaller commercial installations.
Ranking
Signals from the data
Residential, commercial and BIPV.
The temperature coefficient of -0.29%/°C (Pmax) is notably better than that of typical PERC modules (-0.34–0.37%/°C), translating into meaningfully higher energy yield on warm, sunny days. For rooftop installations in Poland, this difference can represent up to 2–3% higher annual yield during peak summer production months.
DAH guarantees ≥89.4% of nominal power after 25 years and ≥87.4% after 30 years. Peer comparable Waaree ARKA Series offers only a 25-year power warranty, and the 30-year retention level places this series above the market norm for the residential segment.
The dual-glass construction (2+2 mm glass) withstands snow loads of up to 5400 Pa and wind loads of up to 2400 Pa — above-standard values compared to the typical 2400/2400 Pa ratings of glass-backsheet modules. Particularly relevant for installations in mountainous and sub-alpine locations in Poland.
DAH Solar maintains uninterrupted BNEF Tier 1 status, confirmed in both Q4 2025 and Q1 2026. Bankable status translates into access to installation insurance and bank financing — a key consideration for commercial projects and leasing arrangements.
Peak efficiency of 22.77% (455W variant) is on par with the highest-rated peer comparables — Sunlike Solar SKT420~455M10-108D6 (22.8%) and IBC Solar LS-TA2 (22.8%) — while clearly outperforming the Waaree ARKA Series (20.93%). The series ranks within the top 10% of the 48-cell TOPCon module segment.
The glass-glass construction results in a weight of 23.9 kg, approximately 20–25% heavier than typical glass-backsheet modules in a comparable power range (~18–20 kg). On older roofs (rafter structures predating the 1990s), a structural load assessment is required prior to installation, increasing both project cost and preparation time.
- At 22.8% efficiency, this panel is on par with typical TOPCon 450-500W modules
- At 227.7 W/m² power density, roof space requirements are typical for TOPCon 450-500W panels
- Temperature coefficient of -0.29%/°C matches the TOPCon 450-500W median
- Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface
- #3073 for efficiency, #2165 for temperature performance out of 14005 panels
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 455 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.
Found 1395 panels of the same or similar size to this one, within ±10 mm. See them here Found 1425 panels of the same or similar size to this one, within ±25 mm. See them here Found 3614 panels of the same or similar size to this one, within ±50 mm. See them here Found 3962 panels of the same or similar size to this one, within ±100 mm. See them here