- Efficiency of 22.9% matches the TOPCon 600-650W median
- At 228.9 W/m² power density, roof space requirements are typical for TOPCon 600-650W panels
- Temperature coefficient of -0.29%/°C matches the TOPCon 600-650W median
- 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces
- Ranked #1853 out of 11891 panels for efficiency in the database
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Series DMxxxM10T-B78HSW 5 variants
The DMEGC DMxXXM10T-B78HSW series are bifacial modules in a bi-glass configuration, designed for installations where real energy gain matters as much as catalog parameters. The application of N-type monocrystalline TOPCon technology helps maintain high performance over time and minimizes typical losses found in older designs. Thanks to the dual-glass structure, the modules are better prepared for challenging environmental conditions—from humidity and ammonia to wider temperature fluctuations, which is especially important for projects deployed for years. Another key advantage is bifaciality, which allows using reflected light from the ground, increasing energy production in PV farms, ground-mounted systems, and bright commercial rooftops. The series focuses on high mechanical durability and operational stability, translating to lower warranty claim risks and a more predictable energy cost over the entire lifecycle. This makes it an excellent choice for C&I and utility investors aiming to maximize yield on limited surfaces and enhance project profitability.
Electrical Parameters (STC)
| Nominal Power (Pmax) | 640 Wp |
| Module Efficiency | 22.90% |
| Voltage at Max Power (Vmpp) | 47.86 V |
| Current at Max Power (Impp) | 13.39 A |
| Open Circuit Voltage (Voc) | 57.70 V |
| Short Circuit Current (Isc) | 14.14 A |
| Max System Voltage | 1500 V |
Temperature Coefficients
| Temp. Coeff. Pmax | -0.290%/°C |
| Temp. Coeff. Voc | -0.250%/°C |
| Temp. Coeff. Isc | 0.048%/°C |
| NOCT | 42°C |
Cell Technology
| Cell Type | Monocrystalline |
| Cell Count | 156 |
| Bifacial | Yes |
| Bifaciality Factor | 80% |
Dimensions & Weight
| Length | 2465 mm |
| Width | 1134 mm |
| Height | 30 mm |
| Weight | 33.5 kg |
| Area | 2.80 m² |
| Power Density | 229.0 Wp/m² |
Warranty
| Product Warranty | 15 years |
| Performance Warranty | 30 years |
| End-of-Warranty Output | 87.4% |
| First Year Degradation | 1.00% |
| Annual Degradation | 0.40%/year |