Decisions 03.12.2013 ACER Decision 01-2013 on Framework Guidelines Gas Tariffs Decisions 26.07.2012 ACER Decision 02-2012 on Interoperability and Data Exchange Rules for European Gas Transmission Networks Decisions 16.09.2011 ACER Decision 04-2011 on the TYNDP 2011-2020 Presented by ENTSOG