From 3.2mm to 2.0mm: Thinner Glass Is Rewriting the Sourcing Logic for Bifacial Modules
Sep 29, 2026
For the past decade, the cover glass on the front side of PV modules has almost by default been 3.2mm. Today, however, a change is underway that many people still underestimate: in China, more and more newly installed bifacial modules are now using 2.0mm glass on both the front sheet and the back sheet. Glass is getting thinner — and quietly rewriting the material-sourcing logic of the photovoltaic supply chain.
For module manufacturers and procurement teams who are selecting glass...