Keqi Liu, Zhifang Shao
The combination of digital technologies and hydrogen is speeding up the shift to a sustainable and resilient energy future. Despite previous studies revealing that digital technologies can improve cost-effectiveness and optimize system performance, systematic analysis of such integration across the hydrogen supply chain remains limited. This paper emphasizes significant findings on the application of digital technologies in the hydrogen sector. Key findings include analyzing artificial intelligence (AI) applications in hydrogen production and storage, as well as its pivotal role in advancing electrolyzer and hydrogen fuel cell commercialization. The paper also explores the potential of emerging intelligent technologies, including blockchain, digital twins, and big data, in accelerating the development of the hydrogen economy. Additionally, this paper examines the potential of integrating intelligent technologies with hydrogen energy to drive intelligent transformation of microgrids, cities, communities, and households. This comprehensive review provides guidance for building an intelligent, transparent, and efficient digital hydrogen economy.