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.
Atomic Energy Research Establishment BEPO, DIDO and PLUTO reactors by 2020. One of the most significant experiments to occur at AERE was the ZETA fusion power experiment. An early attempt to build a large-scale nuclear fusion reactor, the project was started in 1954, and the first successes were achieved in 1957. In 1968 the project was shut down, as it was believed that no further progress could be made with the kind of design that ZETA represented (see Timeline of nuclear fusion). In 1954 AERE was incorporated into the newly formed United Kingdom Atomic Energy Authority (UKAEA). Harwell and other laboratories were to assume