KEPCO E&C was established in 1975 to secure its independent technologies for designing and building nuclear power plants and thermal power plants, and has grown to a world-class nuclear power plant designer in the global market. OPR1000 and APR1400, known as K-nuclear power plants, are evaluated as top-class technologies in terms of its safety and economic efficiency. KEPCO E&C also exported designs and technologies for 500, 800 and 1,000MW standard coal-fired power plants. KEPCO E&C significantly improved competitiveness of Korean energy industry in the areas of power transmission, transformation, new/renewable energy and project/construction management (PM/CM).

KEPCO NF is founded in 1982, to secure the independency of nuclear fuel technology and its localization, also the only company in Korea specialized in design, manufacture and service of nuclear fuel. KEPCO NF is engaged in high-level reactor core design, nuclear fuel fabrication, safety analysis and other related services. KEPCO NF has been seeking opportunities for upgrading and expanding to global markets by developing and patenting nuclear fuel and design codes. KEPCO NF has been supplying high-quality nuclear fuel to 24 nuclear power plants in Korea, both PWR and PHWR, using its localization experiences and deep knowledge in related technologies. In addition, KEPCO NF has been constantly exporting primary components of nuclear fuel and service equipment to the United States and China. KEPCO NF started supplying nuclear fuel to Barakah nuclear power plant in UAE in 2017.