In 1998, the Senate set up a permanent administrative unit in Brussels to carry out direct relations with all the European institutions: the Commission, the Parliament, the Council, etc . As such, this administrative unit has an office within France 's permanent representation to the European Union and another office at the European Parliament.

The main role of this unit is to provide senators with the information required for expedient action, for example, on initiatives planned at European level before formal decisions thereto are made.

This unit is also responsible for supplying senators with all the required information for incorporating the European dimension into the scope of national debates.