Green hydrogen is generated through the split of hydrogen from oxygen in water using a renewable source (solar, wind energy or hydropower), causing no emissions from this process. As a key technology to be deployed in order to reach zero carbon emission goals, the question now is how to advance green hydrogen economies. Challenges include large scale hydrogen production cost, infrastructure investments, bulk storage, transport & distribution, safety considerations, and matching supply-demand uncertainties. This session will discuss legal aspects relevant to these emerging economies such as: (a) Policy-making and regulation; (b) Government funding / aids to help offset the initial high costs; (c) Project’s bankability; (d) Contracts for the implementation of hydrogen production or storage projects (e.g. power-to-gas plants) or infrastructure projects (e.g. the development of a hydrogen infrastructure); and (e) Using green hydrogen as battery, to increase capacity factors on renewable energy and address intermittency.