Enka İnşaat ve Sanayi A.Ş.

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Enka İnşaat ve Sanayi A.Ş.
Anonim Şirket
Traded as BİST: ENKAI
Industry Construction & Energy
Founded 1957
Headquarters Enka Buildings, Istanbul, Turkey
Revenue Increase 7.82 billion TRY (2009)
Increase 1.30 billion TRY (2009)
Number of employees
29,738 (2005)
Website www.enka.com

Enka İnşaat ve Sanayi A.Ş. is a Turkish construction conglomerate based in Istanbul. Enka has 37 subsidiaries engaged in a diverse range of construction activities including power generation, airports, petroleum, and roadways. Enka primarily operates in Turkey, the Commonwealth of Independent States, North Africa, and Europe.


Since 1957 ENKA has completed more than 400 projects throughout many, different countries and over four continents.



ENKA’s history begins in 1957 with the partnership between Şarık Tara and the late Sadi Gülçelik who was the husband of Tara's sister Vildan. The company was registered in İstanbul as a limited liability company with the name, “Şarık Tara ve Sadi Gülçelik ENKA Limited Şirketi”. The abbreviation "ENKA" comes from the phrase "enişte – kayınbirader", both words meaning brother-in-law in Turkish, or, more specifically, "the husband of one's sister or aunt" and "the brother of one's spouse", used to refer to Gülçelik and Tara respectively.

Its earliest projects included the construction of industrial plants, docks, marine slipways, shipyards, grain silos, bridges, roads and piers, all in the İstanbul area.

Among the significant projects of the early years were the construction of the Aksu paper mill, the Chrysler truck assembly plant and the Haydarpaşa grain silos in Turkey.

In the 1960s, ENKA made its first investments in two manufacturing industries with the establishment of the Pimaş Plastic and Altaş Steel Hand Tools factories.

In 1967, following a decade of rapid growth, the partnership was transformed into a joint stock company and its name was altered to “ENKA İnşaat ve Sanayi Anonim Şirketi.”


ENKA’s activities shifted from local projects in the İstanbul region to larger and more diverse projects across Turkey and beyond.

The construction, in the 1970s, of the 150-MW Tunçbilek Thermal Power Plant stands out as ENKA’s first power project and the first step on the road to large-scale energy investments.

Other key projects within Turkey in this period include the construction of the Bosphorus Bridge approach roads and viaducts, and such specialized construction projects as the coke furnaces, raw material preparation systems, rolling mill plant and blast furnace in the İskenderun Iron and Steel Works, the largest industrial plant in Turkey at the time.

Drawing on the strength of its experience in Turkey, ENKA began its initial overseas projects during this decade. ENKA is the first Turkish construction company to have effectively participated in extensive projects abroad. After completing the Benghazi Cement Plant, ENKA built four more cement plants in Libya between 1972 and 1978. The Yamama Cement Plant, and the Riyadh and Jeddah lime factories were ENKA’s initial projects in Saudi Arabia during the same period.

Throughout its expansion, ENKA has diversified, and at the same time has retained its core business. ENKA Group accordingly concentrated its operations in the three principal fields of contracting, manufacturing and trade. ENKA Export Import Company was founded in 1972 and it soon became the leading export company in Turkey. In response to the rapid expansion of the volume of business, ENKA converted its specialized departments into individual companies. Çimtaş, Titaş and Kasktaş were founded to continue the fabrication and erection of steel, earthworks, soil engineering and pile works.


In the early 1980s, ENKA continued to sign contracts for increasingly larger scale projects broadening the scope of its operations in Turkey as well as in Libya, Saudi Arabia, Iraq, and Jordan.

ENKA expanded its activities in Iraq with the construction of the Tasluca and Kerbela cement plants.

The Gerede-Ankara and Ankara Peripheral Motorway in Turkey, the Bekhme Dam in Iraq and the Ras Lanuf and Brega new towns in Libya were ENKA’s first “mega” projects. The other major projects of this period were the 1,200 MW Hamitabat Natural Gas Fired Combined Cycle Power Plant, the Russian natural gas pipeline from Turkey’s Bulgarian border to Ankara and the Iraq-Turkey oil pipeline.

ENKA undertook its initial construction projects in Russia within the framework of the Turkish-USSR Natural Gas Agreement in 1988. These projects included the restoration and renovation of Petrovsky Passage, a historic architectural landmark, and the turn-key construction of the 1000-bed Hospital for World War II Veterans, both located in Moscow.

By 1990, ENKA had begun to rank among the top general contracting companies in the world, offering a comprehensive range of services from design and procurement to construction, erection, operation, maintenance, and management.

After establishment of the ENKA Foundation, the Sadi Gülçelik Sports Complex was opened in 1983.


From the 1990s onward, ENKA’s operations continued to expand in different parts of the world. Beginning in 1993, ENKA, with its joint venture partner Bechtel, signed a series of contracts in Kazakhstan for various projects for the development of the Tengiz Oil Field.

In the early 1990s, ENKA affirmed its willingness to establish long-term relations in Russia and founded two joint stock companies, Mosenka and Moskva Krasnye Holmy, to develop and manage office and residential buildings in Moscow.

ENKA currently owns and manages 318,500 square metres of office space providing local headquarters and facilities to a variety of global firms and 230,000 square metres of shopping malls in Russia.

During this prolific period, various hospital, housing complex, shopping mall, office building and industrial plant projects as well as prestigious contracts such as the renovation of the White House and the State Duma buildings were realized in Russia. In 1997, Ramenka launched its first shopping mall and supermarket in Moscow. The number of supermarkets, hypermarkets and shopping malls owned and operated by Ramenka now totals 63 in Russia. Collectively they serve over 135,000 customers daily.

The 1,400-MW Bursa Natural Gas Fired Combined Cycle Power Plant was completed and commissioned in 2000.

Principal projects in this period include the Bregana-Zagreb-Dubrovnik Motorway in Croatia, the Messebo Cement Factory in Ethiopia and the Afşin Elbistan-B Thermal Power Plant in Turkey.

The 3,854 MW Gebze, Adapazarı and İzmir natural gas fired combined cycle power plants have been realized by the Intergen-ENKA partnership as the largest private sector investment in Turkey, under a build, own and operate scheme. The three power plants started operation in 2002 and 2003.


In addition to remarkable progress around the world, the company's emphasis on Russia has yielded great achievements, rewards, and honors. To date ENKA has completed more than 130 projects in Russia and CIS, ranging from buildings, hospitals, and industrial plants to oil and gas projects.

Having acquired its partner's stake in its energy investments, ENKA currently generates approximately 30 billion kwh of electricity per year.

ENKA's international construction projects continue to be its engine of growth for the future with a current backlog exceeding 7 billion USD. They include a mega-highway project in Romania, a brand new city in Oman, a new terminal at Moscow's Sheremetyevo Airport, a football stadium in Donetsk, Ukraine, a Toyota car factory in St. Petersburg, Russia, and oil field infrastructure on Sakhalin Island in Russia. ENKA is also known for constructing U.S. embassy buildings like those in the Dominican Republic, Equatorial Guinea, The Netherlands, India, Paraguay, Russia, Sri Lanka, Djibouti, Nepal, Bosnia-Herzegovina and Afghanistan.

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