Tongwei has developed the G12 TOPcon solar module series, with efficiency ratings up to 23.1% and a temperature coefficient of -0.30% per degree Celsius.

Tongwei has developed two new PV module lines based on n-type monocrystalline cells made with tunnel oxide passivated contact (TOPCon) technology.

The modules are based on G12 wafers and the company’s TNC cell technology. It said it achieved a power conversion efficiency of 26.1% in mass production.

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