Middle of its segment, modest efficiency
The DAS Solar mini Bifacial Double Glass Module series redefines performance standards in the premium compact photovoltaic module segment. The key technological differentiator of this line is the use of innovative N-type TOPCon cells, which guarantee significantly higher efficiency and minimal power degradation over the long term. Thanks to the symmetrical Double Glass design, these panels exhibit extreme resistance to negative external factors such as moisture, salt, or heavy mechanical loads, making them a safe investment for decades. Advanced bifacial technology allows for the generation of additional energy yield from the rear side of the module, which, combined with an excellent temperature coefficient, ensures the system operates more efficiently on hot days and in diffused light conditions. This model effectively solves the problem of limited installation space on residential and commercial roofs, offering maximum power density while maintaining a smaller weight and size. It is the optimal choice for investors seeking aesthetic and durable solutions that outperform conventional competition in terms of yield stability and material durability. The use of glass on both sides completely eliminates the risk of chemical corrosion and minimizes the PID phenomenon, ensuring trouble-free operation of the installation for over thirty years of use.
Ranking
Signals from the data
Residential, commercial and hot-climate.
Tight roof space, roofs where every square metre has to count and weight-limited structures.
Bottom 5% of the TOPCon 400-450 W segment, against a median of 22.00%. Ranked 9,758th in the whole database.
Bottom 5% of the TOPCon 400-450 W segment, against a median of 220.2. Ranked 9,772nd in the whole database.
Bottom 9% of the TOPCon 400-450 W segment, against a median of 51.4. Ranked 11,424th in the whole database.
N-type TOPCon cells achieve a Pmax temperature coefficient of -0.30%/°C, compared to -0.35%/°C for standard P-type PERC modules. This translates into measurably higher energy yield under high-temperature conditions (above 25°C), with a direct impact on real-world kWh output during summer months.
The manufacturer guarantees a minimum of 87.4% of nominal power output after 30 years of operation. Peer-comparable modules in this class — including the AE Solar AURORA and Aptos Solar DNA-108 — typically carry a 25-year linear power warranty, making this series stand out in terms of long-term investment protection.
A bifaciality factor of up to 80% enables meaningful additional energy generation from the module's rear surface — according to manufacturer data, between 10% and 30% depending on ground albedo and mounting angle. This results in a lower LCOE compared to monofacial equivalents in the same power class.
Encapsulating the cells between two glass layers fully eliminates the risk of Potential Induced Degradation (PID) and backsheet corrosion. Additionally, dual-glass modules offer mechanical load resistance of 5,400 Pa (wind) and 7,000 Pa (snow) — a significant advantage under central European winter conditions.
DAS Solar is listed on the BNEF Tier 1 manufacturer list (confirmed for Q2 2025) and has received an 'A' bankability rating in the PV ModuleTech Q2 2025 ranking published by PV Tech. This level of bankability materially reduces project financing risk and facilitates debt financing for commercial-scale installations.
Although introduced in 2022, this series is designated as discontinued. This limits the availability of matching modules for future system expansions, complicates access to warranty service, and introduces the risk of unavailable replacement components. These factors represent a material risk for long-term installations with a projected payback period exceeding 10 years.
DAS Solar has been operating since 2018, meaning the company will have less than 10 years of track record at the time of product warranty expiration (25 years). Despite holding BNEF Tier 1 status, the absence of a long-term warranty claims history is a potential risk factor regarding a relatively young company's ability to honor its 30-year power warranty obligations.
- Efficiency of 21.0% is 1.0pp below the TOPCon 400-450W median (22.0%)
- 210.0 W/m² power density is 10.2 W/m² below TOPCon 400-450W median (220.2 W/m²) - requires larger installation area
- Temperature coefficient of -0.30%/°C matches the TOPCon 400-450W median
- Weight of 23.7 kg is 1.7 kg above TOPCon 400-450W median (22.0 kg) - verify structural support
- 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces
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 410 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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