Light for its output, needs the roof space
The DAH DAS-LOJP series revolutionizes the approach to efficiency thanks to the patented Full-Screen technology, which completely eliminates the problem of water accumulation and dust deposits on the module edges. The absence of a traditional frame protruding above the glass surface allows precipitation to naturally wash away any impurities, which directly translates into higher energy yields compared to standard designs. The use of advanced cells in N-type TOPCon technology guarantees excellent efficiency under limited sunlight and exceptionally low power degradation over a long-term horizon. This solution is primarily dedicated to rooftop installations with a low tilt angle, where traditional panels often suffer from the edge shading effect caused by dirt. The DAS-LOJP series stands out on the market with its unique frameless edge design, which significantly reduces maintenance costs and the frequency of module cleaning. Investors choosing these products gain maximization of annual yields and a guarantee of stable system operation even in difficult environmental conditions. This is a substantive response to real operational problems, placing these panels at the forefront of innovations available for modern households and enterprises seeking increased energy self-consumption.
Ranking
Signals from the data
Residential and commercial.
Roofs where every square metre has to count and tight roof space.
Top 2% of the PERC 400-450 W segment, against a median of 53.0. Ranked 88th in the whole database.
Top 24% of the PERC 400-450 W segment, against a median of -0.350.
Bottom 1% of the PERC 400-450 W segment, against a median of 206.2. Ranked 13,172nd in the whole database.
Bottom 23% of the PERC 400-450 W segment, against a median of 20.60%.
The DAS-LOJP weighs just 9.9 kg at dimensions of 1985×1165×4 mm, approximately 60% lighter than conventional modules of equivalent power output (standard 410–420 Wp modules weigh 20–22 kg). This enables installation on rooftops with limited structural load capacity—corrugated metal industrial buildings, mansard roofs, and membrane roofing systems—without costly structural reinforcement.
The absence of a protruding front frame eliminates edge shading caused by dust accumulation, a particularly significant issue on roofs with tilt angles below 10°. Rainfall freely washes contaminants across the entire glass surface, which—according to TÜV Nord field testing—translates into higher annual energy yields compared to framed modules at the same site.
N-type TOPCon technology eliminates the Light-Induced Degradation (LID) inherent to PERC cells and delivers superior performance under diffuse irradiance (overcast conditions, low solar angles). The series specifies degradation of ≤0.5%/year after year one, resulting in meaningfully higher cumulative energy yield over a 25-year operational lifetime.
The manufacturer maintained BNEF Tier 1 status continuously across all four quarters of 2025. This status is required by banks and project finance institutions as a prerequisite for PV project financing eligibility—lowering installation WACC and facilitating access to investment loans.
The modules are covered by a 25-year linear power output warranty and a 10-year product warranty, in line with the market standard for Tier 1 N-type modules, ensuring predictable energy yield throughout the system's intended operational lifetime.
In the 410–420 Wp segment, comparable series achieve significantly higher efficiencies: GCL-M10/54H at 21.5%, Solarspace SS8-54HSB Lumina I at 21.51%, and Phono Solar TWINPLUS at 20.98%—versus 19.8–20.3% for the DAS-LOJP. A gap of 1.2–1.7 percentage points means approximately 6–8% more modules are required, or a loss of roughly 15–25 Wp on an equivalent roof area, which is a meaningful constraint on space-limited installations.
The frameless design is incompatible with standard mid-clamps and end-clamps used with aluminum-framed modules. Dedicated edge-mounting brackets (screw-type or clamp-type for 4 mm glass) are required, which—according to installers—increases the mounting system cost by 5–15% compared to a conventional framed-module installation and necessitates hardware verification prior to system design.
- At 20.3% efficiency, this panel is on par with typical PERC 400-450W modules
- Power density of 181.6 W/m² is 24.6 W/m² below PERC 400-450W median (206.2 W/m²) - needs more roof space
- Temperature coefficient of -0.34%/°C matches the PERC 400-450W median
- At 9.9 kg, this panel is 12.1 kg lighter than PERC 400-450W median (22.0 kg) - easier handling during installation
- In the top 84% for efficiency among all PERC panels
Specifications
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
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