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Chinese manufacturer unveils 210 mm busbarless heterojunction solar module

Chinese module manufacturer Cando-solar Photoelectric Technology has developed a heterojunction solar module based on busbarless technology and a 210 mm wafer.

“Our new panel is intended for use in rooftop PV projects and provides customers with lower unit costs and higher power generating capacity,” a company spokesperson told pv magazine. “Compared to the heterojunction modules produced by European producers, our module can be manufactured a 10% lower production costs, due to the lower usage of silver.”

The module is available in five versions with a power output ranging from 405 W to 425 W and a power conversion efficiency spanning from 21.1% to 22.1%. The open-circuit voltage is between 29.7 V and 30.2 V and the short-circuit current is between 17.02 A and 17.39 A.

The panel has a size of 1,754 mm x 1,096 mm x 30 mm and a weight of 23.6 kg. It is built with 2 mm tempered anti-reflective glass and a 30 mm aluminum alloy frame. It also features an IP68 enclosure and the maximum system voltage is 1,500 V. Its operational temperature ranges from -40 C to 85 C.

The panel’s temperature coefficient is -0.24% per degree Celsius and the manufacturer offers a 12-year product guarantee and a 30-year power output guarantee. The panels are said to be able to operate at 87.4% of their original performance at the end of the guarantee period.

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It said the new product has been certified by Germany’s TÜV Rheinland.

“This is the first time that the reliability certification of busbar-less heterojunction products based on the large size 210 mm of silicon wafer has been achieved,” the spokesperson said.

Cando-solar is based in Changzhou, Jiangsu province. It is currently scaling up the capacity of its manufacturing facility from 100 MW to 1 GW.

“We recently raised funds to implement this expansion plan,” the spokesperson said. “We are also looking forward to cooperate with partners worldwide.”

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Source: pv magazine