HSK became ENSI (Swiss Federal Nuclear Safety Inspectorate) on 1 January 2009 giving formal independence to nuclear regulation in Switzerland. In so doing it complied with the provisions of the Swiss Nuclear Energy Act and the international Convention on Nuclear Safety, both of which demanded formal and effective separation between the body responsible for nuclear safety and other bodies/organisations responsible for the use of nuclear energy.
ENSI has the same remit as the former HSK. Organisationally, it is constituted as a body under public law within the Federal Administration, similar to Swissmedic and the Swiss Federal Institute of Intellectual Property. ENSI enjoys functional, institutional and financial independence.