3SUN USA and joint-venture partner Enel are planning an unusual factory in Oklahoma: one that builds solar cells as well as panels. Making the cell is a completely difference process, involving a tightly controlled environment to manage the gases and chemicals needed for cell production. They are working through permitting and expect to go live in 2025. 3SUN is planning bifacial HJT cells and panels for utility-scale and large C&I as well as smaller backsheeted panels for resi.