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The panel shown in the release is a typical type of the NewT @ N series with an output power range up to 700 W. The panel is based on a 210mm N-type wafer, using a half-cut layout. 6 plus 11, with a size of 2384mm plus 1303mm and an average conversion efficiency of 22.5%. However, when using a steel frame, the panel weight is “slightly (2-4%) heavier” than the previous type with aluminum frame.
Senior R&D Director Liu Yafeng presented the features and specifications of the new product to more than one hundred professionals and industry representatives who participated in the release. According to Liu, the new alloy steel frame has higher strength, stiffness and climate adaptability than the conventional aluminum frame. More importantly, the production of steel turned out to be with much lower carbon emissions than the production of aluminum, for example the energy cost was reduced by 3 times, which made the steel frame a best choice in a rapidly growing solar PV world.
In addition, compared to 2.67 times the coefficient of thermal expansion between aluminum and glass, the coefficient of thermal expansion between steel and glass is only 1.3 times, which makes the risk much lower expansion with a change in temperature. It will greatly help the PV module product to adapt to different climates around the world.
As more and more solar PV modules are deployed for cleaner energy supply, the cost of aluminum has increased rapidly. The international price of aluminum rose more than 70% to peak last October compared to January. And that also drove up the total cost of the solar system.
Risen said for its latest NewT @ N series product, compared with conventional aluminum frame type, M10 module type (182mm wafer) 580W with alloy steel frame can reduce up to 8.69 % the cost of BOS (Balance of System) and up to 5.95% LCOE. Risen said that its main high-power TITAN and NewT @ N series products will use alloy steel as the frame in the future.
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