Turkey, located between Europe and Asia, have been an important "Energy Corridor" for the transmission of the Middle East, Caspian area and Asia Country's rich oil and natural gas resources to the Mediterranean thanks to projects like BTC (Baku - Tbilisi - Ceyhan Pipeline Project). In this study, public consultation and involvement in during planning and construction of BTC Project was evaluated. The main objective of public participation is to provide support from all interested stakeholder and to be successful in the project in terms of both socio-economic and environmental issues. In order to attain this objective, the contributions of participation on the energy project have been mentioned in many studies. Public participation is a key step to improving and maintaining environment. But often it comes too late or not all. In this article it was studied whether changing point of view of local public on environmental effects of this project after this project was opened to run on 13 July 2006. Also it was analyzed the trend of public participation strategies and the encountered problems in Turkey.