Copper Ingot Module, 25x98, 180 smelters, 13.611 m^2/smelter, Compact, Borg
For higher latitudes. Very space-efficient, see https://www.reddit.com/r/Dyson_Sphere_Program/comments/mmrwug/borg_tiling_something_im_exploring/ for an introduction to Borg Tiling.