AstroPower is developing a manufacturing process for the production of large-area Silicon-Film™ solar cells under an NREL-administered PVMaT cost-share program. Recent work has focused on new processes and equipment capable of handling very large Silicon-Film™ planks in a low-cost, high-throughput, production environment. New solar cell processes developed include continuous large-area junction diffusion and AR coating. Processes under development include metallization and chemical etching. Large area plank-based processes give a high degree of flexibility, allowing the fabrication of solar cells 100 cm2 to 900 cm2 on the same production line.