The 4rd Turkish Wind Energy Congress (TWEC 2015), which we organized as the Turkish Wind Energy Association (TWEA), was held at the JW Mariott Ankara on 4-5 November 2015. 1,000 people registered for TWEC 2015. A total of 13 sessions were held in two separate halls with the participation of 60 speakers. During the sessions, the developments experienced since last year and the problems that we expect to be resolved this year were shared.