The Helmholtz-Zentrum Geesthacht is a non-profit making research institute with limited liability. Its shareholders are the Federal Republic of Germany, the federal states (Länder) of Brandenburg, Hamburg, Lower Saxony and Schleswig-Holstein, the Gesellschaft zur Förderung des Helmholtz-Zentrums Geesthacht e.V. (Society for the Promotion of the
Helmholtz-Zentrum Geesthacht) as well as a number of renowned companies. The centre is based in Geesthacht, Germany. In 1992, the Working Group Teltow became a part of it. The Helmholtz-Zentrum Geesthacht is a member of the Helmholtz Association of German Research Centres.