The sustainability report of Korea South-East Power (KOEN) embodies its determination to contribute to national development and citizens’ welfare by taking the lead in achieving sustainable future growth as an eco-friendly energy leader that shapes the future through technology. This report was issued to transparently disclose to all stakeholders information regarding KOEN’s economic, social, and environmental efforts towards sustainability and the results, as well as to share about the major changes and future direction of management based on its new strategies and vision.