|1952||Established as "Waterpower research association"|
|1960||Established as an incorporated association by the government(Ministry of economy and international trade)|
|1977||Name of association was changed into "Japan electric power civil Engineering association"|
|Indivisual members||3,225||Civil engineers in Electoric Power Development.|
|Cooperation member||219||Electric Power Companies and Corpolations, and their allied Co., Construction Co. Consulting Co. Institutes.|
|Supporting member||101||Reading organizations of regular publications, etc.|
JEPOC is administrated by an annual general meeting and board of trustees Consisting 28 members elected above mentioned.