After studying Process Technology at the University of Hanover, in 1990 Jörg Ehmke started his professional career at Wintershall AG and later at WINGAS GmbH. In the context of project planning of pipeline systems, including the MIDAL/STEGAL gas pipelines, Ehmke gained international experience in Russia, Poland and the Netherlands.
This was followed by a move to the management of large municipal energy supply companies, GEW in Cologne and GASAG in Berlin. Since then, he has been constantly involved in the German process of liberalization and regulation. As a member of the negotiating delegation for the Associations Agreement, VV II Gas and for the Cooperation Agreement, KoV Gas, Ehmke was involved in shaping the development of the German gas network access model.
Since 2006, Ehmke has headed the network access management sector as an authorized representative of NBB Netzgesellschaft Berlin-Brandenburg mbH & Co. KG. He is responsible for the operation of the dispatching center for the NBB gas grids, for energy balancing and calculating network use as well as for energy planning and key account management.
Jörg Ehmke led the company from August 2014 until December 2017 as sole managing director.