EFDA has two locations, which each house a so-called Close Support Unit (CSU), responsible for part of EFDA's activities. The EFDA-CSU Garching is located in Garching, near Munich (Germany), and is hosted by the German [http://www.ipp.mpg.de/ Max-Planck Institut für Plasmaphysik]. [https://web.archive.org/web/20090723101818/http://www.jet.efda.org/ EFDA-CSU Culham] is hosted by the [http://www.ccfe.ac.uk/ CCFE]  laboratory in Culham (UK), home of the Joint European Torus facilities.
A large number of scientists and engineers from the associated laboratories work together on different projects of EFDA. The main task of the Close Support Units is to ensure that these diverse activities are integrated in a coordinated European Fusion Programme.
The EFDA management consists of the EFDA Leader (Dr. Francesco Romanelli) and the EFDA-Associate Leader for JET (Dr. Francesco Romanelli).