This is a solar panel from Trina Solar from the “Vertex” series , model TSM-DEG19C.20 a monocrystalline, bifacial (double-glass) module. "Bifacial double glazing" means the panel can utilize light from both the front and the back, which can provide additional energy, especially on reflective surfaces. The panel uses 210mm PERC solar cells.
Technical specifications
| Characteristic | Value / explanation |
|---|---|
| Peak power (Pmax / Wp) | 540 Wp |
| Power tolerance | 0…+5 W (so it could be a bit more than 540 Wp) |
| Module efficiency | About 20.7% at 540 Wp |
| Number of cells | 110 cells |
| Dimensions (H × W × D) | approx. 2384 × 1096 × 30–35 mm |
| Weight | 32.3 kg |
| Voltage at rated power (Vmp) | 31.4 V at 540 Wp |
| Current at nominal power (Imp) | 17.21 A at 540 Wp |
| Open-circuit voltage (Voc) | 37.7 V at 540 Wp |
| Short-circuit current (Isc) | 18.30 A at 540 W |
| Temperature coefficient Pmax | –0.34 % / °C |
| Mechanical load capacity | Up to 5400 Pa positive load, 2400 Pa negative load (important in wind/snow) |
| Construction | Double-glazed (front and back), aluminum frame, high-quality glass and encapsulation, IP68 junction box; suitable for harsh climatic conditions (salt air, high humidity, sand, etc.) |
Why this panel is interesting
With 540 Wp per panel, you get a lot of power per m² of roof — useful if you have limited roof space or want the most efficient installation possible.
The bifacial, double-glazed design allows the panel to generate additional energy through light reflecting off the substrate or surrounding environment — which can be particularly beneficial for light/reflective roofs or custom installations.
The high efficiency (~20.7%) and good cell technology (PERC + large wafer) usually ensure a high yield, even under sub-optimal lighting conditions.
Robust construction and good load capacity make it suitable for installations under heavier conditions (wind, snow, etc.).
Thanks to the high power per panel , fewer panels are needed to achieve the same total power — which can save installation and materials.
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