Nord Stream AG, based in Zug, Switzerland, is an international consortium of five major companies established in 2005 for the planning, construction and subsequent operation of two 1,224-kilometre natural gas pipelines through the Baltic Sea. The five shareholders of the Nord Stream consortium are PJSC Gazprom, Wintershall Dea GmbH (formerly Wintershall Holding GmbH), PEG Infrastruktur AG (PEGI/E.ON subsidiary), N.V. Nederlandse Gasunie and ENGIE. PJSC Gazprom holds a 51 percent stake in the pipeline project. Leading German energy companies Wintershall Dea GmbH and PEGI/E.ON hold 15.5 percent each, and the Dutch natural gas infrastructure company N.V. Nederlandse Gasunie, along with the leading French energy provider ENGIE, each hold a 9 percent stake. The combined experience of these companies ensures the best technology, safety and corporate governance for the Nord Stream project, which aims to provide a secure energy supply for Europe.