- oil and gas exploration, production, transportation, and distribution;
- power generation, transmission, and distribution; power design and engineering;
- telecommunications services.
Çalik Enerji has oil and gas exploration and production activities in Turkey, Iraq, Afghanistan, Azerbaijan, and Turkmenistan (notably in the Ýolöten Gas Field). It will construct the Samsun-Ceyhan Pipeline with Italian company Eni to transport crude oil from the Black Sea to the Mediterranean Sea. It also operates power plants in Turkey and Turkmenistan.
- Humber, Yuriy (4 June 2015). "Mitsubishi Corp Invests in Turkey's Calik to Win Energy Orders". Bloomberg. Retrieved 5 June 2015.
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