Tech Tree / Electrolyzer stack electrolyzer-stack Electrolyzer stack Component Hard import Seed import TRL Mars — Energy intensity — Required by 1 Requires 2 Built from: Stainless steel stock Catalyzed by: PGM catalyst (Pt/Pd/Rh) Requires Built from Stainless steel stock Intermediate Catalyzed by PGM catalyst (Pt/Pd/Rh) Component Required by Water electrolysis Process · built_from