Middle of its segment, modest efficiency
The DAH DHN-60R18/DG(BB) series is a breakthrough solution utilizing patented Full-Screen technology, which completely eliminates dust accumulation and water stagnation on the module edges. Thanks to the innovative design without a protruding frame at the top, these panels effectively solve the common problem of energy loss resulting from dirt buildup, which translates into a real increase in yields by several to over a dozen percent annually. The use of advanced N-type cells in TOPCon architecture guarantees excellent efficiency and minimal annual degradation, providing investors with high profitability for decades. This model stands out with its Double Glass construction, which, combined with bifaciality, allows for efficient energy generation from reflected radiation, which is crucial for installations on light-colored surfaces. It is an ideal choice for homeowners and large PV farms looking for maintenance-free modules, especially in locations with a low roof pitch angle. Unlike traditional panels from competitors, the DHN-60R18/DG(BB) series combines modern aesthetics with the highest resistance to micro-cracks and no PID effect, making it an unrivaled choice for demanding users who focus on longevity and maximum system performance.
Ranking
Signals from the data
Residential and commercial.
Tight roof space, roofs where every square metre has to count and weight-limited structures.
Bottom 17% of the TOPCon 500-550 W segment, against a median of 22.73%.
Bottom 17% of the TOPCon 500-550 W segment, against a median of 227.4.
Bottom 25% of the TOPCon 500-550 W segment, against a median of 52.4.
The patented frameless front design eliminates dust accumulation and water pooling at module edges. An independent TÜV Nord field test (Xixia, Ningxia) recorded 11.5% higher energy yield compared to a standard 182 mm module (161.17 kWh/kW vs. 144.54 kWh/kW) — a verified measured figure, not a marketing claim.
N-type TOPCon technology delivers a Pmax temperature coefficient of -0.29%/°C, versus -0.34 to -0.35%/°C typical of PERC modules. At a cell temperature of 70°C, power loss is approximately 1.5 percentage points lower than PERC, translating to tens of additional kWh per year for a residential prosumer system under Central European climatic conditions.
The manufacturer guarantees ≥87.4% of nominal power after 30 years, exceeding the industry-standard 25-year warranty with ~84.8% end-of-life retention offered by comparable products such as the Trina Solar Vertex S or JA Solar DeepBlue 4.0. The extended warranty horizon directly improves project IRR in financial models used to bankroll PV installations.
DAH Solar maintained BNEF Tier 1 status throughout the full year 2025, including after the qualification criteria were tightened from a 5 MW to a 10 MW minimum reference project size in Q1 2025. Bankable classification removes financing and re-insurance risk for projects funded by institutional lenders.
The bifacial double-glass construction (2 mm + 2 mm) meets IEC 61730-certified mechanical load ratings: 5,400 Pa snow load and 2,400 Pa wind load. When installed over high-albedo surfaces (sand, gravel, or white TPO membrane), bifaciality delivers a real-world yield gain of 5–15% at no additional cell cost.
The series peaks at 23.0% efficiency, while direct segment competitors reach higher values: HT-SAAE HT54-18X(N) at 23.8% (+0.8 pp.) and TCL Zhonghuan HSM-BD60-LA at 23.5% (+0.5 pp.). In a 1 MWp utility-scale array, an 0.8 pp. efficiency gap requires approximately 3–4 additional modules to achieve the same peak power output.
The absence of a front aluminum frame necessitates specialized frameless end-clamps that are incompatible with standard framed-module racking systems. This increases BoS cost and extends engineering time, particularly during an installer's first deployment of this module type.
- Module efficiency of 22.1% is 0.6pp below average for TOPCon 500-550W panels (median: 22.7%)
- At 221.1 W/m², this panel generates 6.3 W/m² less per unit area than TOPCon 500-550W median (227.4 W/m²)
- Temperature coefficient of -0.29%/°C matches the TOPCon 500-550W median
- Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface
- In the top 43% for efficiency among all TOPCon 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 500 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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