Energy Transmission Lines, MV Underground Cables and Monoblock Concrete Kiosk Transformer Centers have been established in order to meet the temporary energy need in the construction of TUSAŞ 3rd airport. Testing and acceptance procedures were completed by Boğaziçi Electricity Distribution Inc. Co. and TEDAŞ Boğaziçi Regional Directorate. In order to meet the permanent energy need, Design and Installation Works of 154 KV ETL and Step-Down Substation were made.