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LONGi Switches to Copper from Silver in Solar Cell Production at 21 GW Plant

Unlike silver, copper is more abundantly available and cheaper

July 13, 2026

/ B.S. Nagaraj
/ Manufacturing, Solar
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LONGi Green Energy has started commercial production at a 21 GW back-contact solar cell facility in China using copper-based metallization technology, replacing the use of silver in the manufacturing process.

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B.S. Nagaraj

More articles from B.S. Nagaraj.
ChinaCopperLongisilverSolar Cells
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