Middle of its segment, heavy for its output
The WST-NGXB-D3 Full Black series is built for residential installations that need to perform as well as they look. With a fully black aesthetic - black frame, black rear glass and a dark cell layer - the module blends seamlessly into the roof, instantly setting it apart from conventional panels with white backsheets. At the heart of the series are monocrystalline N-type TOPCon cells, which deliver higher conversion efficiency than older P-type structures and handle high roof operating temperatures better. The bifacial glass-glass construction captures light reflected off the surface beneath the panel, boosting energy yield without requiring extra mounting space. The panels are resistant to PID and LID degradation, translating into stable output over decades, while the glass-glass design further improves mechanical durability and resistance to moisture and physical damage. The series also stands out for its improved performance in low-light conditions, which matters on overcast days or with partial shading, both common on Polish roofs. PFAS-free manufacturing makes it an attractive choice for environmentally conscious investors. It is a fitting option for homeowners who want premium aesthetics, high reliability and a long-term 30-year warranty.
Ranking
Signals from the data
Residential and BIPV.
Weight-limited structures.
Bottom 25% of the TOPCon 400-450 W segment, against a median of 51.5.
- Efficiency of 22.0% matches the TOPCon 400-450W median
- Power density of 220.2 W/m² matches the TOPCon 400-450W median
- At -0.30%/°C, hot weather performance is typical for TOPCon 400-450W panels
- At 24.0 kg, this panel is 2.0 kg heavier than the TOPCon 400-450W median (22.0 kg) - more demanding for installation crews
- 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces
Specifications
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 1797 panels of the same or similar size to this one, within ±10 mm. See them here Found 1928 panels of the same or similar size to this one, within ±25 mm. See them here Found 3413 panels of the same or similar size to this one, within ±50 mm. See them here Found 4007 panels of the same or similar size to this one, within ±100 mm. See them here
About the WST-NGXB-D3 Series series
These answers cover the whole series. Where a figure differs, the specification above is this module's own.