Abstract
Given the urgent necessity of addressing the climate crisis, there is a worldwide tendency to achieve rapid decarbonisation across various sectors of the economy, especially within the urban areas. Recently, hydrogen has been considered as a solid solution of the future urban net-zero energy system. Due to its high energy density, hydrogen has great potential to decarbonise the key urban sectors such as transportation, heating, and electricity. The objective of this study is to not only provide an overview on the concept of Green Hydrogen City but to develop a comprehensive energy planning methodology utilising hydrogen as the main source through a detailed case study of Shanghai. In this context, a hydrogen-based energy system model is presented and applied to Shanghai. This model evaluates the feasibility of utilising renewable energy sources for local hydrogen production, storage, and consumption across Shanghai's electricity, heating, and transportation sectors. It considers operational, technical, and resource constraints to optimise the integration of hydrogen technologies within the urban energy system. It can be concluded that the green hydrogen city concept holds substantial promise for future urban implementation, and this study offers methodological guidance to smart city planners and decision-makers striving for decarbonization solutions and a carbon-free urban economy.
