Solid all-round for its segment
The DAH DHN-54R18/DG solar panel series is a technologically advanced solution based on N-type TOPCon cells, which guarantees significantly higher efficiency and minimal degradation over time. The biggest innovation setting these modules apart from the competition is the patented Full Screen technology, featuring a frameless top edge that effectively eliminates the accumulation of dust, debris, and water. As a result, system owners avoid energy losses caused by dirt, which in traditional panels can reduce yields by several percent. The use of modern rectangular R18 cells allows for maximum utilization of the module surface, offering powerful performance while maintaining compact dimensions. The bifacial double glass design further increases mechanical durability and resistance to extreme weather conditions, while simultaneously enabling energy generation from both sides of the panel. It is a solution dedicated primarily to modern prosumer and commercial installations where maintenance-free operation and top efficiency throughout the system's life cycle are priorities. By choosing this series, investors gain confidence in stable yields even at low roof pitch angles, making it unrivaled in terms of cost-effectiveness and ease of maintenance.
Ranking
Signals from the data
Residential and commercial.
The series achieves module efficiencies of 22.05–22.78%, outperforming direct competitors: Jinko Solar JS182MHC120 (21.48%) by more than 0.57 percentage points and Vikram Solar SOMERA (20.91%) by nearly 1.87 percentage points. For a given roof area, this translates into meaningfully higher installed capacity without adding extra modules.
At -0.29%/°C, the N-type TOPCon temperature coefficient is significantly more favorable than that of typical PERC modules (~-0.35%/°C). In Polish climatic conditions, where module temperatures routinely exceed 55°C during summer, this difference results in 1.5–2% higher hourly energy yield compared to PERC modules of equivalent STC power rating.
The frameless top edge of the Full Screen design eliminates mechanical accumulation of dust, moss, and water — a phenomenon that DAH Solar research attributes to 2–5% annual energy loss in conventional framed panels. This patented solution is not available from Jinko or Vikram competitors in this power class.
The bifacial construction enables energy generation from the rear side of the module, increasing yield by 5–25% depending on ground albedo (light gravel, roofing membrane, snow). The double-glass configuration eliminates the risk of PID degradation and moisture ingress, directly supporting the 30-year power output warranty.
The manufacturer guarantees ≥87.4% of nominal power after 30 years, while most comparable Tier-1 series offer a 25-year warranty with degradation to ~84.8%. DAH Solar has maintained continuous BNEF Tier 1 status for at least Q1 2025–Q1 2026, as confirmed by BloombergNEF data and manufacturer communications, ensuring full project bankability.
The double-glass construction increases module weight to 24.4 kg, compared to the typical 20–21 kg of single-glass PERC modules. For retrofits on existing rooftops or installations on lightweight steel structures, a structural load-bearing assessment is required — particularly for larger systems above 20 kWp.
The frameless top edge of the Full Screen technology requires compatible mid-clamps with appropriate spacing and is not fully interchangeable with all racking systems available on the market — for example, certain Schletter and K2 systems require adaptation hardware. Installers must verify mounting system compatibility prior to procurement.
- At 22.3% efficiency, this panel is on par with typical TOPCon 450-500W modules
- At 222.9 W/m² power density, roof space requirements are typical for TOPCon 450-500W panels
- At -0.29%/°C, hot weather performance is typical for TOPCon 450-500W panels
- Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof
- Ranked #5376 out of 14005 panels for efficiency in the database
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.
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