Nuclear Energy Agency purposes."" NEA currently consists of 33 countries from Europe, North America and the Asia-Pacific region. In 2017 Argentina and Romania accessioned to NEA as its most recent members. Together they account for approximately 85% of the world’s installed nuclear capacity. Nuclear power accounts for almost a quarter of the electricity produced in NEA Member countries. The NEA works closely with the International Atomic Energy Agency (IAEA) in Vienna and with the European Commission in Brussels. Within the OECD, there is close co-ordination with the International Energy Agency and the Environment Directorate, as well as contacts with other directorates, as appropriate.
International Atomic Energy Agency of the General Conference is almost identical to the General Assembly of the United Nations. The Secretariat is the professional and general service staff of the IAEA. The Secretariat is headed by the Director General. The Director General is responsible for enforcement of the actions passed by the Board of Governors and the General Conference. The Director General is selected by the Board and approved by the General Conference for renewable four-year terms. The Director General oversees six departments that do the actual work in carrying out the policies of the IAEA: Nuclear Energy, Nuclear Safety and Security, Nuclear Sciences