The article discusses the increasing global interest in utilizing hydrogen as a means of reducing greenhouse gas emissions, with a focus on South Korea's plans for clean hydrogen production and consumption targets. The South Korean government has set ambitious goals to secure an annual production capacity of green and blue hydrogen, aiming for a significant portion of all hydrogen to be green or blue by 2050. To drive the expansion of clean hydrogen, a clean hydrogen power tender market is set to open in 2024, providing a stable demand for clean hydrogen. Fuel cells (FCs) have been rapidly adopted in South Korea due to their advantages, including lower emissions and high utilization rates. The government recognizes FCs as a new energy source and is promoting their expansion through various policies and initiatives. By amending the Hydrogen Economy Promotion and Hydrogen Safety Management Act, a tender market for FCs has been established to deploy new FCs connected to the national power system each year. A quantitative assessment of the economic impacts of FC expansion is underway to understand the effects on production, value-added, job creation, and wages in other sectors. This analysis will provide policymakers with valuable insights to justify the expansionist policy and secure budget allocations. By adopting the input-output framework, the study aims to determine the economic effects of FC deployment in South Korea, contributing to decision-making processes and national planning efforts.