Tepeoren – Colakoglu – Diliskelesi Line is a 380kV overhead line with a length of 0.6km from Tepeoren, Istanbul, Turkey, to Diliskelesi, Istanbul, Turkey.

The project, which is currently under construction, is expected to be commissioned in 2021.


Tepeoren – Colakoglu – Diliskelesi Line is an overhead line that will be operated by Turkiye Elektrik Iletim. The line will carry alternating current (AC) through double circuit cable.

The development of the Tepeoren – Colakoglu – Diliskelesi Line project has been approved by the Energy Market Regulatory Authority.

Tepeoren – Colakoglu – Diliskelesi Line project development status

The construction works on the Tepeoren – Colakoglu – Diliskelesi Line project were commenced in 2015 and commissioning is expected in 2021.

About Turkiye Elektrik Iletim

Turkiye Elektrik Iletim (Turkiye) is a state owned power transmission company engaged in the business of transmitting electricity through its power plants in Turkey. It operates transmission facilities and carries out the planning of load dispatch and operation services. Turkiye is also a member of CIGRE Turkish National Committee, Turkish National Committee of Word Energy Council, Turkish Electricity Industry Association, Turkish Public Enterprises Association and Turkish Wind Energy Association. Turkiye operates in Turkey. Turkiye is headquartered in Bahcelievler, Turkey.


All publicly-announced T&D Line & Substation projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects is sourced through secondary information sources such as country specific utility players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.