Korea Electric Power Corp. KEP

What this company does

KEPCO transmits and distributes substantially all of the electricity in Korea and, through its six wholly-owned generation subsidiaries, generates the substantial majority of the electricity produced there. As of December 31, 2025 it and its generation subsidiaries owned approximately 53.4% of the total electricity generation capacity in Korea, excluding plants generating electricity primarily for private or emergency use. In 2025 the company sold 549,417 gigawatt-hours of electricity to its customers. Its generation fleet comprised 860 units, among them nuclear, thermal, hydroelectric and internal combustion units, with total installed generation capacity of 83,555 megawatts at the end of 2025. The transmission system consisted of 36,183 circuit kilometers of lines, including high-voltage direct current lines, and 939 substations with aggregate installed transformer capacity of 379,998 megavolt-amperes. The five non-nuclear generation subsidiaries are KOSEP, KOMIPO, KOWEPO, KOSPO and EWP, each wholly owned and incorporated in Korea. KHNP operates 26 nuclear generation units at the Kori, Saeul, Wolsong, Hanbit and Hanul power plant complexes, located in Busan, Ulsan, Gyeongju, Yonggwang and Ulchin respectively. The company split its generation business units off into those separate wholly-owned subsidiaries between January 1999 and April 2001, each with its own management structure, assets and liabilities.

Written from the business description in KOREA ELECTRIC POWER CORP's annual report to the U.S. Securities and Exchange Commission, filed 29 April 2026. Every sentence was checked against that document before publication.