Trina Solar has launched its latest ‘Duomax V’ bifacial double-glass panel and ‘Tallmax V’ (backsheet) series panel. Based on the 

210mm x 210mm large-size silicon wafer and monocrystalline PERC cell, the new panels enable high power output of more than 

500Wp and module efficiency up to 21%.

The firm claims to lead the industry in the Research and Development (R&D) and manufacturing of 210 modules. The move will greatly

 accelerate the time-to-market for large-size modules.

Trina Solar had initiated the R&D of 210 modules last year. Based on the company’s leading multi-busbar technology, the first 210 

module adopts an innovative 1/3-cut design. Based on a comprehensive consideration of potential challenges including strong module 

power, yield, manufacturing difficulties, hot spot risks, output current performance and junction box safety, Trina Solar’s multi-busbar 

and 1/3-cut design will pave the way for the compatibility and integration of large-size, high-power modules, and downstream systems.

The head of engineering technology R&D at Trina Solar said, “With decades of accumulated experience in process and technology, 

we are confident that we can leverage the latest materials and technologies to create another high-performance and the reliable 

module for the photovoltaic (PV) industry. Currently, our team is accelerating the transformation of our latest R&D outcomes into 

products that can go into mass production, leading the PV industry into the era of 500W module power.”

With the ‘standard’ (156mm x 156mm) P-type multicrystalline and monocrystalline wafers rapidly becoming obsolete, the PV industry

 is rapidly undertaking a major transition to a number of larger wafer sizes that require half-cut cells or multi-cut cells with multi 

busbar (MBB) technologies or stacking and shingling interconnect technologies to limit sheet resistance and provide high cell and 

panel output safely.

Trina Solar claims that preliminary estimates from large-scale ground mounted power stations in China's Heilongjiang province, 

compared with conventional 410W bifacial double-glass modules, the 500W Duomax V can reduce the balance-of-system (BOS) 

cost by 6 to 8% and reduce the levelized cost of energy (LCOE) by 3 to 4%. This is supported by the panels offering a combination 

of multi-busbar technology that integrates advanced three-piece, non-destructive cutting and high-density packaging technologies. 

This further reduces the resistance loss and significantly improves the anti-cracking, anti-hot spot performance of the modules 

while maximizing space utilization. If the traditional half-cut cell design were applied to the 210mm ultra-large silicon wafers, the 

high current output characteristics of the modules could trigger system challenges or cause the module to crack or run afoul of 

DC terminal limits. In addition, the unique design of the new modules can ensure that the output current, open circuit voltage 

and mechanical load of the modules comply with relevant downstream technical safety specifications and can seamlessly connect 

with the existing mainstream PV system design.

They will be widely used in utility-scale PV power plants and commercial and industrial rooftops.

The Duomax V bifacial double-glass panel and Tallmax V (backsheet) panels and can be seamlessly connected to existing mainstream

 photovoltaic system designs, including tracking solutions. The Duomax V bifacial double-glass panel has passed TUV Rheinland 

photovoltaic module IEC tests and been granted the IEC 61215 and IEC 61730 PV panel performance standards certificates. The 

DuoMax V bifacial double glass series panel has 150, 210mm cells (1/3 cut: 3 x 5 x 10) configuration. Its dimensions are 

2187mm x 1102mm x 35mm (86.10 x 43.39 x 1.38 inches). Weight: 31.1kg (66.4lb).

The Tallmax V has 150 210mm cells (1/3 cut: 3 x 5 x 10) configuration. Module dimensions: 2176mm x 1098mm x 35mm 

(85.67 x 43.23 x 1.38 inches)

Weight: 26.3kg (58.0lb)

Trina Solar will formally start accepting orders in the second quarter of 2020 and is set to achieve mass production in the third 

quarter, with production capacity expected to be approximately 5.5GW by the end of the year.