This study analyzes the characteristics of climate-vulnerable households through the use of various energy poverty indicators. Additionally, to examine how low-income households are affected by energy price increases resulting from carbon taxation and other measures, it estimates the urban gas price elasticity by income group through a panel regression analysis. High-accuracy households showed higher proportions of elderly, single-person, and female households.The lowest-income households demonstrated significant responsiveness to gas price increases, while the elasticity decreased as income rose. Due to these significant variations in gas price elasticity depending on income levels,it is essential to consider relevant welfare policies to ensure climate-vulnerable groups can maintain an adequate level of energy consumption. Based on the results, policies aimed at supporting climate-vulnerable populations should consider factors beyond income taking into account aspects such as the energy efficiency.

[Key Words] Energy Poverty, Energy Poverty Accuracy, Carbon Tax, Energy Efficiency