Strong in heat, needs the roof space
The DAS Solar DAS-DH120ND Black Pro series is a range of photovoltaic panels based on advanced HJT (Heterojunction Technology) with N-type cells - one of the most efficient and reliable technologies currently available on the market. The bifacial dual glass design allows for the absorption of solar radiation from both the front and back sides, which, under optimal conditions, can result in up to 30% higher energy generation compared to conventional monofacial panels. The double-tempered glass provides exceptional mechanical strength - the modules can withstand snow loads up to 5400 Pa and wind loads up to 2400 Pa, making them an ideal choice for challenging weather conditions typical in Poland. The elegant, fully black Black Pro aesthetic makes this series ideal for roof-mounted installations, where both performance and visual appeal are important. The modules are compatible with 1500 V systems, simplifying the design of large-scale installations. The 30-year performance warranty and 15-year product warranty confirm the high quality of manufacture. The DAS-DH120ND series is a choice for demanding individual customers, installers, and investors undertaking commercial projects.
Ranking
Signals from the data
Residential, commercial and cold-climate.
Roofs where every square metre has to count, weight-limited structures and tight roof space.
Top 11% of the TOPCon 450-500 W segment, against a median of -0.290.
Bottom 8% of the TOPCon 450-500 W segment, against a median of 225.2. Ranked 7,535th in the whole database.
Bottom 8% of the TOPCon 450-500 W segment, against a median of 52.2. Ranked 10,397th in the whole database.
Bottom 9% of the TOPCon 450-500 W segment, against a median of 22.52%. Ranked 7,421st in the whole database.
HJT technology delivers a Voc temperature coefficient of -0.250%/°C, while competing TOPCon modules (Huasun Aurora Pro, Sunpro TOPCon 210R, Canadian Solar TOPBiHiKu6) typically reach -0.30%/°C. In climates with hot summers, this translates into measurably higher energy yield at peak season.
HJT cells degrade at ~0.25–0.30%/year versus ~0.40%/year for TOPCon, resulting in approximately 3–4% higher cumulative energy yield over a 30-year project lifetime. The manufacturer's 30-year power warranty is consistent with these technology-level performance parameters.
The dual-glass construction (2×2.0 mm tempered glass) withstands snow loads up to 5,400 Pa and wind loads up to 2,400 Pa — exceeding the IEC baseline of 2,400 Pa / 2,400 Pa. This is a meaningful advantage in regions where heavy snow accumulation poses a real structural risk.
DAS Solar achieved BNEF Tier 1 status for four consecutive quarters in 2025, meaning six independent banks have financed projects using their modules. For commercial investors and prosumers relying on external financing, this is a key credibility indicator for a manufacturer founded in 2018.
The symmetric bifacial design enables rear-side albedo harvesting (manufacturer-declared gain of up to +30% vs. monofacial under suitable mounting conditions). Compatibility with 1500 V systems simplifies the electrical design of commercial installations above 100 kWp, while the All-Black Pro aesthetic meets the premium requirements of BIPV and residential rooftop segments.
The series peaks at 22.8% module efficiency, while comparably priced alternatives — the Huasun Aurora Pro RS490–515S8R and Sunpro TOPCon 210R — reach 23.17%, a gap of ~0.37 percentage points. On a fixed roof area, this equates to approximately 1.6% less installed capacity per m², which may be a decisive factor on space-constrained rooftops.
HJT modules are priced at ~$0.38–0.50/W at wholesale, compared to $0.28–0.35/W for TOPCon (2025 market data), representing a price premium of roughly 10–20% over comparable-wattage offerings from Huasun, Sunpro, or Canadian Solar TOPBiHiKu6. The premium is partially justified by the superior temperature coefficient and lower degradation rate, but must be validated against a project-specific ROI calculation.
The dual-glass construction increases module weight to 27.5 kg, compared to 22–24 kg typical of single-glass TOPCon modules in the same power class. On large rooftop installations, this may require a structural load assessment or the use of higher-rated — and more costly — racking systems.
- Module efficiency of 21.7% is 0.8pp below average for TOPCon 450-500W panels (median: 22.5%)
- At 216.7 W/m², this panel generates 8.5 W/m² less per unit area than TOPCon 450-500W median (225.2 W/m²)
- At -0.28%/°C, hot weather performance is typical for TOPCon 450-500W panels
- At 27.5 kg, this panel is 3.5 kg heavier than the TOPCon 450-500W median (24.0 kg) - more demanding for installation crews
- Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface
Specifications
Datasheet charts
Measured curves published by DAS Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 490 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 81 panels of the same or similar size to this one, within ±10 mm. See them here Found 94 panels of the same or similar size to this one, within ±25 mm. See them here Found 588 panels of the same or similar size to this one, within ±50 mm. See them here Found 1900 panels of the same or similar size to this one, within ±100 mm. See them here