Welysis

We design, build, and operate modular chlor-alkali electrolysis plants worldwide. From the Canary Islands (Spain), Welysis delivers fully engineered, pre-assembled chemical plants for the local production of sodium hypochlorite, caustic soda, hydrochloric acid, and chlorine gas, reducing chemical imports and strengthening industrial autonomy. Our technology combines: • High-efficiency electrolysis systems • Modular and scalable plant design • Advanced digitalisation (WIN) for remote monitoring & predictive maintenance • A global R&D+i center focused on quality, standardisation, and best operational practices With projects across Europe, Africa, and the Americas, we support governments, industries, and water utilities in securing reliable access to essential chemicals. Welysis, local production, global impact. If you are exploring partnerships, project development, or training opportunities, we’d be glad to connect.