The Institute of Energy Economics, Japan was established in June 1966 and certified as an incorporated foundation by the Ministry of International Trade and Industry in September that year. With the diversification of social needs, IEEJ has expanded its scope of research activities to include such topics as environmental problems and international cooperation closely related to energy. In October 1984, the Energy Data and Modeling Center (EDMC) was established as an IEEJ-affiliated organization to carry out such tasks as the development of energy data bases, building of various energy models and econometric analyses of energy. In July 1999, EDMC was merged into IEEJ and began operating as an IEEJ division under the same name, i.e., the Energy Data and Modeling Center.
In June 1966.