Hydro is entering a new development stage for its HalZero production technology. The company will invest in a test facility supported by the Norwegian government. With this step, Hydro is on track to deliver pilot production of zero-carbon primary aluminium by 2030.HalZero is a brand new process for production of primary aluminium. Instead of carbon dioxide, only oxygen is emitted from the process. If Hydro succeeds in this development, it could revolutionize the aluminium industry. In the HalZero process, alumina is chlorinated and becomes aluminum chloride in a process that also produces carbon dioxide. Instead of releasing the CO₂ to the atmosphere, it is sent back into the process and reused in the chemical reaction in a closed loop. This makes the electrolysis process completely greenhouse gas emission free.The HalZero process differs significantly from the current production of primary aluminum and is being developed for use in new production facilities.Zero-carbon aluminium has properties that are essential in the green shift. The metal is light and is weather resistant, which is significant for, among other things, electric cars, building facades and solar panels.Development of HalZero is part of Hydro's technology roadmap to reduce the emissions associated with aluminum production. HalZero is primarily suited for new production capacity. Hydro is working in parallel to develop carbon capture and storage for its existing aluminum smelters while increasing the use of renewable electricity and testing green hydrogen in the value chain.