According to most scenarios, green hydrogen is produced using electrolysis and the purest water. As water as a resource is already in short supply in some regions, but hydrogen is needed on a decentralized basis, alternative raw materials and processes could help to reduce the regional availability problem. In this respect, the parameter of local-regional water availability should be included in hydrogen planning and sustainability criteria to a greater extent than has been the case to date. Against this background, alternative production processes and raw materials should also come into focus. The production of orange hydrogen based on biogenic as well as fossil residual and waste materials as a complementary process could also enable further co-benefits such as a CO₂ sink effect, soil improvement and emission reduction. These technologies should therefore receive greater attention and support in research and in the context of hydrogen and carbon management strategies at EU and federal level. 

View Article (DE)