Solid all-round for its segment
DAH DHN-48Z16/DG(RR) photovoltaic panels revolutionize the approach to efficiency thanks to the patented Full Screen technology, which completely eliminates the protruding frame edge. Thanks to this design, water and any contaminants flow freely off the module surface, effectively solving the common problem of sediment accumulation on the lower edge of the panel. The use of advanced N-type TOPCon silicon cells ensures higher efficiency and significantly lower annual degradation compared to traditional P-type solutions. The Double Glass construction additionally strengthens mechanical resistance and allows for the effective use of reflected light, which translates into realistically higher energy yields. This series is especially dedicated to homeowners and companies looking for maintenance-free systems for low-tilt roofs, where standard modules quickly lose power due to accumulating dust. What distinguishes this model from the competition is the innovative Zero-Ledge design, which minimizes the risk of hot spots caused by localized soiling. By choosing DAH DHN-48Z16/DG(RR), you are investing in a product with an excellent temperature coefficient, which guarantees stable operation and maximum profits from photovoltaics for many years, without the need for frequent and costly cleaning of the module edges.
Ranking
Signals from the data
Residential, commercial and hot-climate.
The Pmax temperature coefficient is -0.29%/°C, significantly better than typical P-type PERC modules (-0.34 to -0.36%/°C). On hot days (35 °C), this advantage translates into a real-world annual energy gain of approximately 1–2% compared to older technologies.
TÜV Nord confirmed in an independent field test a 6–15% increase in energy generation compared to conventional framed modules on low-tilt roofs, where frame-edge deposits create shading strips and hotspots. The technology is patented in 18 countries, including DE, US, AU, and JP.
The manufacturer guarantees ≥89.4% of rated power after 25 years and ≥87.4% after 30 years. The peer-comparable DMEGC GH400M10T-B48HST offers a standard 25-year warranty with no extended 30-year coverage, making the DAH series more advantageous for long-term investment cases.
DAH Solar maintains bankable manufacturer status on the BloombergNEF Tier 1 list across consecutive quarters of 2025. This enables project financing through banks and financial institutions, which is critical for commercial installations and PPA-based projects.
A bifaciality factor of up to 80% allows additional energy harvest from reflected irradiance off light-colored substrates such as white gravel or EPDM membranes. The double-glass construction provides superior resistance to UV degradation, moisture ingress, and mechanical loading compared to polymer backsheet modules.
The RR (terracotta) variant reaches a maximum efficiency of 20.02%, while the equivalent DAH Full-Screen FS module with clear glass achieves 21.78% per the manufacturer's datasheet — a difference of approximately 1.76 percentage points attributable to the lower transmittance of the colored laminate. Buyers selecting a module solely on the basis of maximum energy yield should consider the clear-glass version.
- Efficiency of 19.3% is 3.3pp above the TOPCon 0-400W median (16.0%)
- 192.7 W/m² power density - 32.9 W/m² more than TOPCon 0-400W median (159.8 W/m²), more power per roof area
- Temperature coefficient of -0.29%/°C matches the TOPCon 0-400W median
- Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface
- #12830 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 385 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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