The solar industry is evolving fast enough that most dormant capacity left behind by bankrupt smaller producers probably isn't worth reactivating even if module prices rebound. These producers don't just have smaller annual capacities. They also have less sophisticated quality control, less automation, and older, slower generations of the automated tools they do have.

Module assembly is simple enough that some of those lines could be reactivated in response to demand, but module assembly has always been the easiest part. Smaller wafer and cell manufacturers that go bust probably won't see their equipment resurrected anywhere. Newer capacity from the likes of JinkoSolar, LONGi, and GCL yields more wafers per ingot and more efficient cells from wafers, more consistently, at lower costs.