Day September 2, 2026

BC vs TOPCon Solar Module Prices: What the Premium Actually Is

Longi Hi-MO X10 LR8-66HVD 640~670M

There is no single back-contact premium. In commodity module segments BC runs about 9 to 10 percent above TOPCon, in China and FOB alike. In European residential all-black, the same technology carries a 64 percent premium. Nothing about the cell changes between those two numbers. The segment does. Here is what that means when you are pricing a job.

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