Until such a time as the urban mining system is fully implemented and the aluminium alloys we use are fully sourced from post-consumer materials, Hydro limits their impact on the environment with the use of Hydro REDUXA. Hydro REDUXA 4.0 is a primary aluminium which generates a CO2 footprint of just 4kg CO2 per kg of aluminium, well below the European average of 6.7kg of CO2. Hydro REDUXA is created with modern technology and the use of renewable energy from hydro, wind and solar power. This means we are able to produce a low-carbon primary aluminium that is cleaner and greener than ever before.