Low prices for TOPCon put pressure on PERC

In May 2024, high-efficiency panels, predominantly glass-glass modules equipped with tunnel oxide passivated contact (TOPCon) cells began to converge on price with mainstream offerings, writes Martin Schachinger, of pvXchange. Production volumes for these negatively-doped, “n-type” cells and modules have been ramped up in China while the increasingly restrictive customs situation in the United States may already be having an impact. For the European market, ever-lower prices for the latest module technology would suggest that demand would continue to rise were it not for a number of disruptive factors.