A joint research effort led by Dr. Sang Yong Park and Professor Dong Gu Choi has introduced an energy system model, the KIER-TIMES model, tailored to South Korea’s unique energy environment. This model, based on the International Energy Agency’s TIMES framework, offers insights into the optimal utilization of hydrogen energy to facilitate the country’s transition towards carbon neutrality by 2050. The study emphasizes the pivotal role of hydrogen as both a clean energy source and a storage medium that can help manage the variability of renewable power. The research outlines the necessity of hydrogen energy constituting 27% of the national energy supply to achieve carbon neutrality, with a projected 25% contribution to overall energy consumption by 2050. Importantly, the analysis underscores the importance of effectively importing hydrogen, highlighting the need for at least 76% of hydrogen to be sourced externally to meet carbon neutrality goals. Moreover, advancements in water electrolysis technology efficiency are identified as a key factor in reducing power and hydrogen consumption, with a target efficiency of 94% set to yield significant energy savings. The study also recommends the strategic application of CCUS technology, particularly in blue hydrogen production facilities, as a cost-effective means to reduce emissions and diminish reliance on more costly green hydrogen production. The findings of this comprehensive analysis contribute to shaping Korea’s energy policy landscape by offering evidence-based recommendations aligned with international standards. Dr. Park envisions expanding the model to evaluate sector coupling technologies and further drive advancements towards carbon neutrality. The research's publication in the esteemed journal Energy showcases its significance in advancing the discourse on energy system optimization and hydrogen utilization.