Hydrovolt is a European battery recycling company and joint venture between Northvolt and Norsk Hydro. It develops and operates industrial-scale systems for recycling lithium‑ion batteries from electric vehicles, stationary storage, and manufacturing scrap, with core operations in Fredrikstad, Norway.
Its process integrates automated dismantling and mechanical separation to recover aluminium, copper, plastics, and a concentrated “black mass” containing nickel, manganese, cobalt, and lithium. Recovered aluminium is returned to Hydro’s metal value chain, while black mass is supplied for hydrometallurgical refining into battery‑grade materials, supporting a closed‑loop supply chain. Hydrovolt’s activities increase materials circularity, reduce dependence on primary mining, and help market participants meet European battery sustainability and recycling requirements.