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Large-format TW Solar (Tongwei) TWMND-78HD640 640 Wp bifacial panel with N-type TOPCon cells in a glass-glass design. Silver frame, 22.9% efficiency – a solution for utility-scale PV farms.
TW Solar (Tongwei) TWMND-78HD640 is a large-format, bifacial 640 Wp photovoltaic panel built with 156 monocrystalline N-type TOPCon cells (half-cut) in a glass-glass design (2 × 2.0 mm heat-strengthened glass). The double-sided structure allows for additional energy generation from the rear side of the module (80% bifaciality), while the high 22.9% efficiency and high power lower the levelized cost of energy (LCOE). This silver frame panel is a solution dedicated to utility-scale PV power plants.
| Maximum power (Pmax) | 640 Wp |
| Module efficiency | 22.9% |
| Maximum power voltage (Vmpp) | 48.22 V |
| Maximum power current (Impp) | 13.28 A |
| Open-circuit voltage (Voc) | 57.40 V |
| Short-circuit current (Isc) | 13.86 A |
| Cell type | N-type TOPCon |
| Number of cells | 156 |
| Module type | bifacial, glass-glass |
| Frame color | silver (anodized aluminum) |
| Dimensions (L × W × H) | 2465 × 1134 × 30 mm |
| Weight | 33.8 kg |
| Temperature coefficient of Pmax | -0.28 %/°C |
| Maximum system voltage | 1500 V DC |
| Product warranty | 12 years |
| Linear power warranty | 30 years |
TW Solar 78HD-640W Bifacial SF — panel N-Type bifacial 640 W, glass-glass, srebrna rama — B2B wholesale prices for installers and execution companies. Check availability and cooperation terms: contact us.
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