Pallet 36 pcs. TONGWEI Solar 590W Bifacial Glass-glass photovoltaic panel

The subject of the sale is a full palette of 36 TW Solar photovoltaic panels with a power of 590W each, in N-type Half-cell technology, in a bifacial version with a glass-glass structure.

Model from the product card: TWMND-72HD590W.

Total pallet power: 21.24 kWp.

The panels use modern monocrystalline N-type cells and a bifacial structure, so they can generate energy from both the front and back of the module. The glass-glass construction increases the durability of the panels, and the high efficiency makes the modules very suitable for commercial and industrial installations and photovoltaic farms.

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The most important features of the product

• Full pallet: 36 pieces of panels
• Power of one panel: 590W
• Total pallet power: 21.24 kWp
• Double-sided bifacial modules
• N-type Half-cell technology
• Monocrystalline N-type TNC cells
• Glass-glass construction – glass on the front and back
• 144 cells in a 6 × 24 arrangement
• Module efficiency 22.8%
• Additional energy yield from the rear side of the module
• Double-sidedness 80 ±5%
• Positive power tolerance 0 to +3%
• High power output and low LCOE
• IP68 junction box with 3 diodes
• Anodized aluminum alloy frame
• Mechanical resistance to snow and wind loads
• 12-year manufacturer's warranty on materials and workmanship
• 30 years linear power warranty

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Technical specifications of one panel

• Manufacturer: TW Solar
• Model: TWMND-72HD590W
• Series: TWMND 72HD575–595W
• Module type: N-type Half-cell Bifacial Module
• Maximum power: 590 W
• Cell type: TNC, N-type monocrystalline
• Number of cells: 144 pieces
• Cell arrangement: 6 × 24
• Construction: bifacial glass-glass
• Front glass: 2.0 mm, highly transparent, AR coated, semi-tempered
• Back glass: 2.0 mm, semi-tempered
• Frame: anodized aluminum alloy
• Junction box: IP68, 3 diodes
• Output cable: 4.0 mm², +400 mm / -200 mm, length can be adjusted

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Dimensions and weight

• Dimensions of one panel: 2278 × 1134 × 30 mm
• Weight of one panel: 31.5 kg
• Number of panels on the pallet: 36 pieces
• Estimated weight of panels only: approximately 1134 kg, excluding the weight of the pallet and packaging

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Pallet data

• Number of panels on the pallet: 36 pieces
• Power of one panel: 590 W
• Total pallet power: 21,240 W / 21.24 kWp
• The product is factory-packed and secured for transport

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Electrical parameters STC of one panel

• Maximum power Pmax: 590 W
• Open-circuit voltage Voc: 52.70 V
• Short-circuit current Isc: 13.95 A
• Operating voltage Vmp: 44.27 V
• Operating current Imp: 13.33 A
• Module efficiency: 22.8%

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NMOT electrical parameters of one panel

• Maximum power Pmax: 443.7 W
• Open-circuit voltage Voc: 50.07 V
• Short-circuit current Isc: 11.26 A
• Operating voltage Vmp: 41.24 V
• Operating current Imp: 10.76 A

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Operating parameters

• Operating temperature range: -40°C to +85°C
• Maximum system voltage: 1500 V DC
• Maximum series protection: 30 A
• Power tolerance: 0 to +3%
• Double-sidedness: 80 ±5%
• NMOT: 45 ±2°C

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Mechanical resistance

• Snow load: 5400 Pa
• Wind load: 2400 Pa

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Temperature coefficients

• Temperature coefficient Pmax: -0.28%/°C
• Temperature coefficient Voc: -0.24%/°C
• Temperature coefficient Isc: +0.046%/°C

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Additional energy yield from the rear side

Thanks to bifacial technology, the panels can generate additional energy from the back of the module. For the 590W model, the product card shows the following values for additional yield:

• With 5% additional yield: 619.5 W per module
• With 15% additional yield: 678.5 W per module
• With 25% additional yield: 737.5 W per module

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Warranty and degradation

• 12 years warranty on materials and workmanship
• 30 years linear power warranty
• Degradation in the first year: less than 1%
• Annual degradation after the first year: less than 0.4%
• Guaranteed power after 30 years: 87.4%

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Additional information about application

TW Solar TWMND-72HD590W panels are designed for high energy production and reliable operation in large photovoltaic installations. They will work well in commercial, industrial, roof and ground-mounted PV farm installations.

The bifacial glass-glass design allows for increased energy yield in places where the back side of the module can use light reflected from the ground, e.g. on light roofs, ground structures or surfaces with a high reflectivity.

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