Preview: In this paper, following a brief history of the development of nuclear energy in South Korea, the root causes that instilled public distrust of nuclear energy and Moon Jae-in’s phase-out policy are discussed. Subsequently, by analyzing the validity of Moon’s plan,I argue that this phase-out policy is not beneficial for the long-term sustainability of South Korea’s economy in general, and of the Korean nuclear industry in particular. The paper concludes with policy recommendations for a more balanced nuclear policy that can accommodate public opinion and, at the same time, ensure energy security and provide other economic and diplomatic benefits.