The Chinese photovoltaic industry is seeing a divide over the latest upscaled solar cells and modules, with many companies throughout the manufacturing chain facing a choice between an ‘M12’ group using 210 mm sized wafers, and an ‘M10’ group using 182mm sized wafers – as well as corresponding different sizes at the cell and module level. Either way, but especially with 210mm, the larger photovoltaic sizes will need manufacturing equipment to be expensively upgraded throughout the supply line. Given the trend to larger sizes and a seemingly greater number of affiliated companies, 210mm could be expected to win out eventually. However, it is less compatible and less tried-and-tested than 182mm, which has the head-start. There are several technical distinctions between…