TWMNF-66HD (G12-66 Bifacial Module)
Technology & Design
Part of the TNC 2.0 Series, the TWMNF-66HD leverages Tongwei’s proprietary 908 Technology (0BB design) to eliminate traditional busbars, reducing shading by over 90% and enhancing current collection efficiency 14. The module incorporates TPE Edge Passivation to repair laser-cut cell edges, improving durability and power output, while Steel Mesh Printing achieves 100% aperture ratio for optimal light capture 19.
Performance Highlights
- Power Range: 695–715 Wp (standard) with a peak efficiency of 23.7% 18.
- Double-Glass Design: Utilizes 2.0 mm anti-reflective (AR) coated front glass and 2.0 mm rear glass, ensuring 88%+ bifaciality (TÜV Rheinland-certified) for increased energy yield in reflective environments like snow or water 6.
- Reliability: Passes rigorous tests including 5400 Pa front/2400 Pa rear mechanical load, salt mist corrosion (8th-grade certification), and hail impact (25 mm diameter at 23 m/s) 19.
- Cost Efficiency: Reduces CAPEX by 1.26% and LCOE by 1.31% compared to conventional modules, driven by high power density and low degradation rates .
Physical Specifications
- Dimensions: 2384 × 1303 × 33 mm
- Weight: 37.9 kg
- Cell Configuration: 132 half-cut N-type monocrystalline cells (G12 wafer)
- Warranty: 30-year linear power output guarantee (87.4% retention at year 30) 611.







