ISOE participation includes nuclear electricity utilities and national regulatory authorities who participate under the ISOE Terms and Conditions.
Official participants include (as of January 2017):
- 77 Utilities in 29 countries
- 28 Regulatory Authorities in 26 countries
ISOE operates in a decentralised manner. A Management Board of representatives from all participating countries, supported by the joint NEA and IAEA Secretariat, provides overall direction. Four ISOE Technical Centres (Europe, North America, Asia and IAEA) manage the programme’s day-to-day technical operations. National Coordinators in each country serve as contact points for the transfer of information from and to participants.
ISOE is jointly sponsored by the NEA and IAEA.