Turn back the clock to 2012, and the PV sector had gone through an initial growth-related technology shake-out that can largely be seen today in c-Si technologies having 95% of market-share, and only one viable thin-film supplier (First Solar).
After the 2012 PV stock-market crash, the industry went into cost-reduction mode and then product optimization. This optimization phase centred on utility-scale modules moving from 60-cell to 72-cell as the norm, and module design moving from legacy 2-busbar to 5 busbars.