ENKA was founded in 1957 as a partnership between the late Şarık Tara and his brother-in-law, the late Sadi Gülçelik, both of whom were civil engineers who graduated from Istanbul Technical University.

During its first few years in operation, ENKA gradually became stronger thanks to the hard work and sacrifices of its founders. The small new firm had taken an active part in various large construction projects in Istanbul – such as the İstinye Highway Bridge and Quaywall, and the Babaeski-Kuleli Road – and was beginning to attract the attention of high-level officials, evoking their admiration and encouragement with its founding philosophy of concentrating on projects requiring special techniques or involving a relatively high degree of difficulty as well as complex design and engineering tasks and risk, rather than on the conventional building projects in which most other firms were engaged.

Right from the start, management and staff, engineers and workers stood shoulder-to-shoulder in a joint effort which has formed the basis of ENKA’s particularly friendly and cooperative management style.

The most significant projects in the early years were the construction of the Unkapanı Flyover, the General Electric Motors Factory and the Haydarpaşa Grain Silos in Istanbul, the Siemens Cable Plant in Mudanya, the Goodyear rubber tire plant in İzmit, the Chrysler Truck Assembly Plant in Gebze and the Aksu Paper Mill in Giresun.

At the beginning of 1970, ENKA was involved in 35 construction projects, all running concurrently, ten of which were overseas.

Contracts with foreign companies began to develop into joint ventures, first in Turkey, and then, internationally.


As a result of these strategic, cooperative business ventures with foreign firms, ENKA, together with a German partner, was awarded an international tender for the first time in 1970, to construct the Ortaköy Viaducts and approach roads to the Bosphorus Bridge.

During the same year, ENKA commenced the construction of a cement plant at Benghazi in Libya. The construction of various motorway tunnels on the Anatolian highway, such as the 660 m İzmit open tunnel, the 580 m Dilderesi and the 440 m Hereke twin tube tunnels soon followed.

It was also during the 1970s that ENKA broke ground with its first power plant projects, the Tunçbilek Thermal Power Plant and the Yatağan, Yeniköy and Kemerköy lignite-fired plants.

Other major projects within Turkey included specialized construction, such as the İskenderun Iron and Steel Works, Turkey’s largest industrial plant at that time.

In the ensuing years, various other construction projects were undertaken in cooperation with major German, Polish, Austrian, British, French, Jordanian and Japanese firms within Turkey, Saudi Arabia, Libya, Jordan and Iraq.

In the meantime, the ENKA Group decided to concentrate its operations in three principal fields; construction, fabrication and trade. The ENKA Export Import Company was founded in 1972. In response to the rapid expansion of its business volume, ENKA transformed its specialized departments into individual, free-standing companies with substantial investments made in their fields of expertise.

Çimtaş was founded to continue the fabrication and erection of steel structures/elements, Titaş for earthworks and soil engineering and KASKTAŞ for piling.


In the early 1980s, ENKA expanded its activities in Iraq with the construction of the Tasluca and Kerbela Cement Plants and in Saudi Arabia with the Riyadh Water Transmission System, the Al Khafji Desalination Plant and the Medinah Housing Project. The Gerede to Ankara and the Ankara peripheral motorways in Turkey, the Bekhme Dam in Iraq and the Ras Lanuf and Brega New Towns in Libya were ENKA’s first mega-scale projects. The other major project during this period was the 1,200 MW Hamitabat Natural Gas-fired Combined Cycle Power Plant in Turkey.

By the end of 1980, ENKA İnşaat ve Sanayi A.Ş. was the 64th largest international contractor in the world, while ENKA’s Export Import Company became the largest export trading house in Turkey.

Meanwhile, the ENKA Sports, Education and Culture Foundation was established, and the Sadi Gülçelik Sports Center was inaugurated in 1983.

In those years, the company also began to venture into refinery, petrochemical and pipeline projects. ENKA, in collaboration with a Japanese partner, completed the Iraq-Turkey crude oil pipeline expansion project in 1984. In 1986, ENKA partnered with a French company for the construction of the 842 km natural gas pipeline from the Bulgarian border of Turkey to Ankara, including the 118 km offshore pipeline in the Marmara Sea.

Following the foundation of the Istanbul Stock Exchange in 1986, ENKA shares were partly traded under the name of ENKA Holding Yatırım A.Ş., which after its merger in 2002, became ENKA İnşaat ve Sanayi A.Ş.

1989 was the year of the Sirte Bay Hotel and Conference Center’s construction in Libya, completed in an incredible 180 day construction period, a record in high quality and timely delivery.

In 1988, ENKA undertook its first construction projects in the Russian Federation within the framework of the Turkish-U.S.S.R. Natural Gas Agreement. These projects included the restoration and renovation of the Petrovsky shopping arcade, a historic architectural landmark built in 1903 by the famous Russian architect Kalugin, and the turn-key construction project of a 1,000-bed hospital for World War II veterans, both located in Moscow.

These projects were followed by the landing of a contract for an even more eminent reconstruction and renovation project of the former Russian Parliament – the White House. The building was reconstructed and renovated within three months, as it was required to be the new Government House. The State Duma Building, one of Moscow’s oldest landmarks, previously the Gosplan Headquarters, was also reconstructed and restored within three months.

ENKA’s reputation in Russian Federation also led to contracts with foreign investors such as Masterfoods and Danone, that were impressed with ENKA’s impeccable record of world-class quality and its unmatched speed of execution.

By 1990, ENKA ranked among the top general contracting companies in the world.


ENKA offered a comprehensive range of services, from design and procurement to construction, fabrication, erection, operation, maintenance and management.

In 1991, ENKA took part in the “Housing Construction Program” in the Russian Federation, Belarus and Ukraine. Its objective was to provide housing for members of the former Soviet Army returning to their home countries from the former East German State, following its reunification with West Germany.

Between 1991 and 1995, ENKA successfully completed seven projects within the internationally tendered program financed by the German State. A key project here, was the Borisow Military Housing Project in Belarus, the pioneering settlement forming part of this military housing program. A key requisite of this tender was the short time frame required for completion and accordingly, turn-key construction was accomplished within a mere 173 days. In total 5,970 apartment units together with the required technical and social infrastructure was built by ENKA for the military housing program.

Starting from 1993, ENKA, together with its joint venture partner, Bechtel, signed a series of contracts for a number of projects to develop the Tengiz Oil Field in western Kazakhstan. ENKA & Bechtel’s first contracts were awarded by Tengizchevroil for projects relating to the improvement of the Tengiz Oil Field infrastructure.

These projects paved the way for major contracts to expand, upgrade and develop the Tengiz and the Korolev Oil Fields on the eastern shores of the Caspian Sea. ENKA and its joint venture partner provided integrated engineering, construction, project management and procurement expertise for Tengizchevroil. During the execution of these enormous projects, more than 20 million man-hours were spent under live plant conditions, without any lost time incidents.

In the 1990s, various engineering and construction contracts were completed in the Russian Federation, including the building of hospitals, housing complexes, shopping malls, office buildings, industrial plants.

It was also during the 1990s that ENKA affirmed its willingness to make long-term investments in the Russian Federation. Two joint stock companies – MOSENKA and Moskva Krasnye Holmy were established in the partnership with local entities to develop and operate office buildings in Moscow.

MOSENKA was founded in 1991 with a mission to renovate historical buildings that contributed to the splendor of Moscow and meet the growing demand for office space. Later, Moskva Krasnye Holmy was established in 1994 for the implementation of the Russian Cultural Center, a unique blend of business and cultural objects.

Following the completion of these buildings, the development of a more extensive project, the Paveletskaya Plaza Business Center, consisting of three premium class office buildings, with a total rentable floorspace of 60,000 m² were built. Paveletskaya Plaza, with its remarkable architecture, is widely regarded as a landmark in the Russian capital.

From 1995 onwards, ENKA began to extend its real estate portfolio in Moscow.

The office buildings on Sretenka Avenue, the Tsvetnoy Palazzo, the Chapligina House, Riverside Towers and the Naberezhnaya Tower were all entirely developed by ENKA.

ENKA further extended its business lines in the Russian Federation with the foundation of RamENKA in 1997, to build and operate shopping centers and supermarket chains.

In November of the same year, it launched its first Ramstore hypermarket and shopping center in the Kuntsevo district of Moscow. The company continued its growth and opened its second hypermarket and shopping center, Maryina Roshcha, despite the economic crisis in Russian Federation in 1998.

ENKA has continued its investments in Russian Federation and today owns 10 Shopping Malls. Total gross area of Shopping Malls owned and operated by ENKA is 850,000 m2.

ENKA’s real estate investment projects have become the overriding choice for a large number of leading international and Russian companies.

In 1997, ENKA took significant step towards becoming an independent power producer in Turkey. Following a build-own-operate (BOO) tender, ENKA was awarded the right to build, own and operate the Gebze Power Plant with a capacity of 1,540 MW, the Adapazarı Power Plant with a capacity of 770 MW and the İzmir Power Plant with a capacity of 1,520 MW.



The Gebze and Adapazarı Power Plants were commissioned in 2002 and the İzmir Power Plant, in 2003. ENKA has become the largest electricity producer in the Turkish private sector, since the plant operations began and the sole owner of the electricity generation companies. With their collective annual generation capacity of 32 billion kilowatt-hours, they are capable of meeting 11% of Turkey’s aggregate energy consumption.

The Afşin Elbistan-B Thermal Power Plant, the U.S. Consulate Building in Istanbul, the Bregana-Zagreb-Dubrovnik Motorway in Croatia, the Transylvanian Motorway in Romania, the Caspian Sea Offshore Construction Works, the Rijnmond Energy Center in The Netherlands, a dam construction in Algeria and the Swissôtel Krasnye Holmy in Moscow, and various new U.S. embassy compounds, were some of the key projects undertaken by ENKA in the early 2000s.

Other significant contracts undertaken by ENKA in the early years of the same decade included the Philip Morris Cigarette Factory in St. Petersburg, the Sakhalin I and II oil and natural gas processing units in Russian Federation, the Sheremetyevo Airport Terminal 3 Project in Moscow, and the water treatment plant in Algeria.

From 2006 onwards, major engineering and construction contracts awarded to ENKA were the Five-Star Hyatt Regency Hotel and the Business Center in Dushanbe, Tajikistan, the Shakhtar Donetsk Football Stadium project with a 52,667-spectator capacity in Ukraine, the Rreshen-Kalimash Motorway in Albania, Metropolis Business Center, Moscow City Imperia Tower and Eurasia Tower Buildings in Moscow, the U.S. consular buildings in Sarajevo, Djibouti and Burundi, the 411 MW Single Shaft Combined Cycle Power Plant in Yajva, the Russian Federation, the Morine-Merdare Motorway in Kosovo, the Lapino Perinatal Hospital in Moscow, the U.S. embassy buildings in Equatorial Guinea, the Dominican Republic, Afghanistan.



In 2011, ENKA won the contract for the construction of the West Qurna-2, EPC Electrical Power Generation Plant for Lukoil. It was the first Gas-fired Thermal Power Plant (GTPP), where ENKA acted as the sole EPC Contractor in oil, gas and petrochemicals.

During 2012-2013, ENKA gained contracts for the execution of mechanical and electrical installation works of the Khabarovsk Refinery in the Russian Federation; the MEI Early Production Facility in Majnoon Oil Field and the conversion of three existing simple cycle power plants into combined cycle in Erbil, Sulaymaniyah and Duhouk in Iraq; the mechanical erection works for the construction of the Berezovskaya Coal Fired Power Plant in the Russian Federation.

Civil works contracts for the construction of the Ufa Perinatal Medical Center, Sergiev Posad Multifunctional Shopping Center and the US Embassy Moscow Annex Office Building in the Russian Federation, and the Mausoleum, Mosque, Library and Museum in Gabon, were awarded to ENKA.

At the beginning of 2014, ENKA started the construction of two Compressor Stations and a Pressure Reduction and Metering Station for the expansion of South Caucasus Pipeline (SCPX), the part of the Shah Deniz Full Field Development Project.

During the same year, ENKA was awarded contracts to build the first phase of the Bazyan Combined Cycle Power Plant, which is the Simple Cycle Power Plant section; to construct the Prishtine–Hani i Elezit (Route No:6) Motorway in Kosovo; the construction of a gas-fired combined cycle power plant with a 1,500 MW capacity, to provide electricity and to ensure security of the power supply in Baghdad in Iraq; construction and consultancy services for the US Embassy Compounds in Netherlands, Mauritania, Turkmenistan, together with the Headquarters Building and CJTF Joint Operations Center in Djibouti.

The construction of the Kuntsevo Multifunctional Trade & Business Center in the Russian Federation was completed and commenced operation at the end of 2014 and the construction of the office buildings was completed in the 2nd quarter of 2015. Within the scope of this project, the existing building which had been opened in 1997, covering 19,400 m2 was demolished and a new 245,000 m2 modern complex was constructed.

In 2015, ENKA completed its works on the Erbil Combined Cycle Power Plant Project, which became the first synchronized combined cycle power plant in Iraq.

Finally, following its successful project execution in Iraq, in July 2015, ENKA gained the EPCC contract for a processing facility in the West Qurna 1 Oilfield with a 100,000-barrels a day capacity.

Also, by the end of the year 2015 ENKA was awarded the turn-key contract for Kashirskaya Shopping Center in Moscow, Russian Federation.

Last but not least, ENKA’s fully-owned subsidiary Çimtaş completed the fabrication and ground assembly works for the İzmit Bay Crossing Suspension Bridge Project in full and on time in 2015.

Furthermore, Cimtas Pipe, one of ENKA’s rapidly expanding group companies, carried out fully integrated, high-quality piping fabrication in record-breaking tight deadlines for large-scale LNG (liquefied natural gas) and refinery projects in the US and Australia.

All these fabrication works were carried out in the piping factory of Cimtas Pipe, which has the highest capacity in the world, and in recently-commissioned fitting and pipe manufacturing facilities.

At the beginning of 2016, ENKA has signed contracts to undertake projects, such as the Kashagan Oil Field Development Offshore Construction Works in Kazakhstan and 3 more special buildings in the Asian continent.

In 2016, ENKA set up the first research and development center in the Turkish construction sector in order to make greater use of its in-house engineering capabilities and add to its expertise in the area of power plant design, spanning the domains of civil/structural, mechanical, process, piping, control/instrumentation and electrical engineering.

In the following year, the company established a new subsidiary, ENKA Systems, to meet the software needs of companies engaged in very large and/or global operations.

In 2017, ENKA’s international construction projects continue to be its engine of growth for the future. ENKA has been awarded contracts for the Gelendzhik Multifunctional Medical Center and TAIF Business Center in the Russian Federation, the projects related to the Tengiz Oil Field Development in Kazakhstan and special buildings; 1 in the North American continent, 1  in the South American continent, 1 in the European and 1 in African continents.

In the early 2017, ENKA entered into a consortium agreement with GE with a view to undertaking the Samawa and Dhi Qar each 750 MW Combined Cycle Power Plants in Iraq.

ENKA set out its sustainability journey in 2017 as a signatory of the United Nations Global Compact for a sustainable future; and by launching the Sustainability Department in 2018, ENKA transformed it into institutional structure and a management system.

New projects undertaken in 2018 include Tengiz Oil Field Development under different contracts in Kazakhstan, Quay wall and marine works at Umm Qasr Port in Iraq, 495 MW Nizhnekamsk Combined Cycle Power Plant in the Russian Federation and a special building in North American continent. Apart from these, among the projects undertaken by the Group companies, especially the production and installation of 83,500 tons of steel towers and deck panels contract received by Çimtaş for the 1915 Çanakkale Bridge, which will be the world’s longest suspension bridge, plays an important role.

Among the large-scale investments in the real estate sector, the reconstruction of the Kashirskaya Plaza, The Multi-Functional Trade Center in Moscow was completed and started operation in the first half of 2018. In this segment, ENKA owns approximately 370 thousand m2 of net rentable Class A office space and 357 thousand m2 of net rentable space in shopping malls and a hotel which are all located in Moscow except one shopping mall. In all the office buildings which ENKA manages, it is hosting some of the world’s foremost international companies.

New projects undertaken in 2019 include; the 112-km Morava Corridor Motorway project which stretches from Pojate to Preljina in Serbia, the 250 MW Natural gas Combined Cycle Power Plant project for TAIF Group company Kazanorgsintez in Kazan, Tatarstan, the first phase of a High-technological multifunctional medical complex in St. Petersburg, the Russian Federation, and Produced water treatment facility in Iraq.

As a new investment in the field of energy, ENKA’s works continue in the Namakhvani Project, a hydro power plant with a total capacity of 433 MW, which will be developed, constructed, owned and operated by ENKA and Norway’s Clean Energy Group.

In 2019, with its Sustainability Policy and its strategy which are summarized under the captions of; Doing Good Business, Caring for Employees, Developing Communities and Reducing Environmental Impact; and together with the communities in which it interacts due to its activities and all parties with which it cooperates, ENKA has continued to expand its sustainability practices across the entire value chain as well as projects and group companies.  As a result of these works, ENKA continues its presence in the London-based FTSE4Good Index; which evaluates companies on their environmental, social and governance performance; and it was also entitled to be included in the Borsa İstanbul Sustainability Index.

Records show that so far, ENKA has undertaken 131 projects in Turkey amounting to a contract value of US$ 7.1 Billion, and another 417 projects with a contract value of US$ 44,2 Billion have been awarded to ENKA in foreign countries.

Delivering such large-scale projects on time, while achieving the highest standards in terms of quality & safety has always been crucial to ENKA’s success.

With access to a human resource pool of over 40,000 construction personnel, and construction equipment and a machinery park consisting of over 4,000 items, ENKA is able to rapidly mobilize anywhere in the world, in order to immediately provide quality and safe construction services.

With its headquarters in Istanbul, Turkey, ENKA continues to achieve a lasting legacy as one of the most highly valued and trusted brands in Turkey.