Ertugrul Altin

Zorlu Holding Co. operates as a holding company with interests in the textile, energy, and financial sectors. The firm is engaged in the production of home textile, polyester yarn, electronic products, information technologies, durable consumables, financial services, and energy generation. It operates through subsidiaries which include Zorlu Textiles Group, Vestel Group of Cos., Zorlu Real Estate Group, and Zorlu Energy Group. The company was founded by Haci Mehmet Zorlu on March 16, 1953 and is located in Istanbul, Turkey.

Çalik Holding AS manages and coordinates the activities of its subsidiaries. It operates through the following segments: Energy, Construction, Textile, Marketing, Telecommunication, Banking and Finance, and Other. The Energy segment involves in the sale of electricity; operation of natural gas and crude oil resources; exploration and production of resources; and sale and transportation of resources to international markets. The Construction segment operates in construction, contracting, and decoration businesses. The Textile segment produces and trades yarn, texture, and ready wear products. The Marketing segment supplies goods that are used in the production and the domestic or foreign projects carried out mainly by the group entities. The Telecommunication segment provides communication, press, and internet services. The Banking and Finance segment offers commercial and investment banking, financial leasing, insurance, project financing trading of marketable securities, and credit financial services. The Other segment includes electronic fee collection, organization, mining, and transportation energy license procurement. The company was founded by Ahmet Çalik on March 20, 1997 and is headquartered in Istanbul, Turkey.

SOCAR Turkey Enerji AS operates as an investment holding company with interest in managing petrochemicals, renewable energy and container port operation businesses. It engages in building refineries to produce naphtha; manufactures petrochemical products for use in construction, agriculture, automotive, electrical, electronic, packaging, and textile industries; and raw materials for pharmaceuticals, paint, detergent, and cosmetics markets. The firm also provides container terminal operations and handling services; and engages in building wind power plants. The company was founded in 2008 and is headquartered in Istanbul, Turkey.

IGDAS is a natural gas distribution company based in Istanbul, Turkey.

Trans Anatolian Gas Pipeline Co. BV builds and operates gas transmission pipeline system. It is a project for the construction of pipeline to supply gas from Azerbaijan. The company is headquartered in Çankaya, Turkey.