The role of the European Network of Transmission System Operators for Gas (ENTSOG) is to facilitate and enhance cooperation between national gas transmission system operators (TSOs) across Europe, to ensure the development of a pan-European transmission system in line with European Union energy goals. ENTSOG’s tasks are mainly defined in Regulation (EC) No 715 / 2009. This includes developing network codes for market and system operation, elaborating the Ten-Year Network Development Plan (TYNDP), providing regular information on gas supply and demand for the European market and delivering common operational tools to ensure network security and reliability. ENTSOG work is continuing to evolve: from designing the secondary legislation and fulfilment of conferred regulatory tasks, monitoring the effects of the agreed outcomes through to responding to future challenges and building on achieved results. While its focus remains on monitoring Network Code implementation, ENTSOG future activities will also include assessing the progress of the functionality of the European gas markets and looking at longer term horizons for European Scenarios.