Green hydrogen, produced using renewable energy sources such as wind power, presents a crucial solution for global

decarbonization. South Korea is emerging as one of the global leaders in hydrogen technology and is projected to be a large

consumer of hydrogen in the near future. However, the country faces significant limitations in domestic renewable energy

resources, necessitating considerations for green hydrogen on not only own productions but also imports from other countries.

Australia, with its vast wind energy potential, is well-positioned to become a major exporter of green hydrogen. This

paper analyzes the feasibility of importing green hydrogen produced from wind power plants in Australia to South Korea,

focusing on hydrogen production, storage, transportation, and each part’s carbon emissions. To meet South Korea’s clean

energy targets, the study examines the costs and technologies, including electrolysis and storage with conversion systems,

such as ammonia and liquefied hydrogen, that are required for efficient long-distance transportation. Environmental feasibility

also addresses the analysis on carbon emission allowance that should be considered of each process. As from our study,

the unit cost of green hydrogen for the entire process, using an alkaline electrolysis and ammonia carrier for storage and

transportation (AEC-NH3), is $6.72/kgH2 (including carbon credits), indicating that it is the most economical option now.

Applying the 2050 target, the unit cost of hydrogen can be reduced to about $2.50/kgH2. Furthermore, the process using

a proton exchange membrane electrolyzer and storage and transportation in ammonia carrier (PEM-NH3) shows the most

cost-effective process with $1.59/kgH2 without carbon credits, close to the projected unit hydrogen cost in 2050. However,

it shows $2.44/kgH2 with carbon credit indicating the importance of the carbon emission considerations. Despite challenges

related to high green hydrogen costs under the removal of carbon emission, the findings indicate that strategic international

collaboration and advancements in hydrogen technologies, making green hydrogen imports from Australia a viable solution

for South Korea’s sustainable energy future.