On December 1, 2021, the General Assembly of Hydrogen Europe - Research admitted as its member the Institute for Sustainable Transition and Development, at Trakia University. Hydrogen Europe - Research is one of the three pillars that support the Clean Hydrogen Joint Understanding and represents its European headquarters, coordinating the development of hydrogen technologies, that unite science and industry. 102 European research organizations are already members of Hydrogen Europe - Research - in just 2 years they have grown from 60 to 102. The other Bulgarian representative is BAS, which has been a member since 2014.
The membership enables the Institute to participate in the development of topics for the annual project programmes, and to receive current updates on all hydrogen activities at European level.