# Energy companies headquartered in Ankara

Tamtam tracks 37 energy companies headquartered in Ankara. This list ranks the 30 largest by number of employees on LinkedIn, led by RÖNESANS HOLDİNG, TEIAS and Limak Group of Companies. Their median headcount is 1,095. Half of them were founded in 1985 or later.

The energy companies in Ankara are primarily large, diversified holding companies with significant interests in construction, energy generation, and related infrastructure. These firms often manage extensive portfolios across various sectors, including real estate, tourism, and industrial production, alongside their core energy operations. A notable characteristic is the prevalence of companies founded between the 1970s and early 2000s, indicating a mature industrial base.

Rönesans Holding, with over 7,000 employees, is a multinational conglomerate in construction, real estate, and energy. Limak Group of Companies is diversified in construction, tourism, cement, and energy. BOTAŞ focuses on oil and natural gas operations, while TEIAS is a leading electricity transmission operator. Çelikler Holding is involved in renewable energy and mining, and Akkuyu Nükleer specializes in nuclear power plant construction and operation.

🇹🇷 Ankara · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [RÖNESANS HOLDİNG](https://www.tamtam.ai/c/ronesans-holding) (ronesans.com)<br>A multinational conglomerate based in Ankara, specializing in construction, real estate, healthcare, and energy projects across Europe, Asia, and Africa | Holding Companies | 🇹🇷 Ankara | 7,087 |  |
| 2 | [TEIAS](https://www.tamtam.ai/c/teias-ankara) (teias.gov.tr)<br>Leading electricity transmission operator in Turkey, integrating into international energy markets, expanding infrastructure, and operating in quality, economically, and reliably | Electric Power Transmission, Control, and Distribution | 🇹🇷 Ankara | 3,816 | 2001 |
| 3 | [Limak Group of Companies](https://www.tamtam.ai/c/limak-group-of-companies) (limak.com.tr)<br>Operating across diverse sectors including construction, energy, tourism, cement, infrastructure, technology, and food and beverage, with global and international operations. | Holding Companies | 🇹🇷 Ankara | 2,921 | 1976 |
| 4 | [Koloğlu Holding](https://www.tamtam.ai/c/kologlu-holding) (kolin.com.tr)<br>A diversified conglomerate investing in various sectors including construction, energy, mining, tourism, port operations, shipyard management, and industrial production, emphasizing sustainable development and social responsibility | Construction | 🇹🇷 Ankara | 2,697 |  |
| 5 | [BOTAŞ](https://www.tamtam.ai/c/botas) (botas.gov.tr)<br>A leading energy organization in Turkey focusing on oil and natural gas operations, LNG terminals, international transportation projects, and environmental sustainability | Oil and Gas | 🇹🇷 Ankara | 2,180 | 1974 |
| 6 | [EÜAŞ, (Elektrik Üretim Anonim Şirketi)](https://www.tamtam.ai/c/euas-elektrik-uretim-anonim-sirketi) (euas.gov.tr)<br>A state-owned entity responsible for operating thermal and hydraulic power plants, ensuring power supply security and building new plants when approved | Oil and Gas | 🇹🇷 Ankara | 1,862 | 2001 |
| 7 | [Çelikler Holding](https://www.tamtam.ai/c/celikler-holding-ankara) (celiklerholding.com)<br>A leading Turkish entity focused on domestic production, construction, energy generation, mining, tourism with a large workforce and successful projects | Renewable Energy Semiconductor Manufacturing | 🇹🇷 Ankara | 1,744 | 1958 |
| 8 | [GÜRİŞ HOLDİNG](https://www.tamtam.ai/c/guris-holding) (guris.com.tr)<br>Leading construction group specializing in engineering and construction of various infrastructure projects such as metro systems, bridges, dams, and sustainable energy plants | Civil Engineering | 🇹🇷 Ankara | 1,654 | 1958 |
| 9 | [GAMA Holding](https://www.tamtam.ai/c/gama-holding) (gama.com.tr)<br>A global leader in constructing power plants, refineries, infrastructure, and high-rise buildings, along with investments in energy, health, and tourism sectors | Industrial Machinery Manufacturing | 🇹🇷 Ankara | 1,520 |  |
| 10 | [Mapa Group](https://www.tamtam.ai/c/mapa-group) (mapa.group)<br>Multinational company specializing in construction, hospitality, renewable energy, airports, and air freight with extensive global operations and project management expertise. | Construction | 🇹🇷 Ankara | 1,500 | 1978 |
| 11 | [Akkuyu Nükleer](https://www.tamtam.ai/c/akkuyu-nukleer) (akkuyu.com)<br>Specializes in the construction and operation of Turkey's first nuclear power plant with advanced safety systems, providing a significant portion of the country's electricity needs | Nuclear Electric Power Generation | 🇹🇷 Ankara | 1,488 | 2011 |
| 12 | [YDA Group](https://www.tamtam.ai/c/yda-group) (yda.com.tr)<br>A construction group with over half a century of experience in infrastructure projects, real estate development, aviation, healthcare, energy, and more | Construction | 🇹🇷 Ankara | 1,263 |  |
| 13 | [Fernas](https://www.tamtam.ai/c/fernas) (fernas.com.tr)<br>Founded in 1982, this construction firm has completed various projects internationally, including industrial plants, pipelines, dams, and infrastructure construction | Holding Companies | 🇹🇷 Ankara | 1,255 | 1982 |
| 14 | [ASTOR A.Ş.](https://www.tamtam.ai/c/astor-a-s) (astoras.com.tr)<br>Leading manufacturer in the electromechanical industry sector, specializing in transformers and switchgear products, with a focus on quality, innovation, and global presence | Electric Power Transmission, Control, and Distribution | 🇹🇷 Ankara | 1,127 | 1983 |
| 15 | [Enerjisa Başkent Elektrik Dağıtım A.Ş.](https://www.tamtam.ai/c/enerjisa-baskent-elektrik-dag-t-m-a-s) (enerjisa.com.tr)<br>Page under construction with a focus on providing innovative solutions in a wide range of industries | Utilities | 🇹🇷 Ankara | 1,095 | 1993 |
| 16 | [Turkish Electricity Distribution Corporation (TEDAŞ)](https://www.tamtam.ai/c/turkish-electricity-distribution-corporation-tedas) (tedas.gov.tr)<br>Official page of a Turkish electricity distribution corporation providing essential services in the energy sector to customers and communities | Electric Power Transmission, Control, and Distribution | 🇹🇷 Ankara | 924 | 1994 |
| 17 | [Çelikler Holding](https://www.tamtam.ai/c/celikler-holding) (celiklerholding.net)<br>A diverse group operating in construction, mining, tourism, and energy sectors, specializing in projects such as infrastructure, mining production, and energy generation | Construction | 🇹🇷 Ankara | 591 |  |
| 18 | [Fernas Construction Company Inc.](https://www.tamtam.ai/c/fernas-construction-company-inc) (fernas.com.tr)<br>A Turkey-based construction company, established in 1982, with projects in Qatar, India, Kazakhstan, Iraq, Bangladesh, and Oman, specializing in various infrastructure construction projects worldwide | Oil and Gas | 🇹🇷 Ankara | 579 |  |
| 19 | [Türkerler Holding](https://www.tamtam.ai/c/turkerler-holding) (turkerler.com)<br>Global construction and energy sector leader in quality, innovation, and technology, operating in domestic and international markets with a commitment to constant renewal | Construction | 🇹🇷 Ankara | 568 | 1993 |
| 20 | [Europower Enerji ve Otomasyon Teknolojileri San.ve Tic. A.Ş.](https://www.tamtam.ai/c/europower-enerji-ve-otomasyon-teknolojileri-san-ve-tic-a-s) (europowerenerji.com.tr)<br>Specializing in designing, developing, and manufacturing LV-MV-HV electrical systems, offering turn-key contracting services for power generation, transmission, and distribution projects worldwide | Appliances, Electrical, and Electronics Manufacturing | 🇹🇷 Ankara | 563 | 2009 |
| 21 | [Özaltın Holding](https://www.tamtam.ai/c/ozalt-n-holding) (ozaltin.com)<br>Leading organization in Turkey, specializing in construction, infrastructure projects such as dams, water treatment facilities, roads, bridges, railways, and various other sectors globally | Construction | 🇹🇷 Ankara | 561 | 1965 |
| 22 | [TEİAŞ](https://www.tamtam.ai/c/teias) (gov.tr)<br>It is a state economic enterprise focused on expanding and improving Turkey's electricity transmission infrastructure to operate it efficiently, economically, and reliably | Utilities | 🇹🇷 Ankara | 541 |  |
| 23 | [YİĞİT AKÜ](https://www.tamtam.ai/c/yigit-aku) (yigitaku.com)<br>Established in 1976, the company is a leading manufacturer of batteries, particularly lithium batteries for electric vehicles, exporting to over 100 countries worldwide | Motor Vehicle Manufacturing | 🇹🇷 Ankara | 519 | 1976 |
| 24 | [Elektrik Üretim A.Ş.](https://www.tamtam.ai/c/elektrik-uretim-a-s) (euas.gov.tr)<br>TEAŞ is a conglomerate of three separate organizations in the energy sector: EÜAŞ, TEİAŞ, and TETAŞ, focusing on electricity generation, transmission, and trading | Electric Power Generation | 🇹🇷 Ankara | 511 | 2001 |
| 25 | [YILDIZLAR GRUP](https://www.tamtam.ai/c/yildizlar-grup) (yildizlar.com)<br>With over 40 years of experience, the group specializes in construction, infrastructure, and energy projects, expanding internationally while delivering high-quality work on time | Construction | 🇹🇷 Ankara | 502 | 1968 |
| 26 | [Pasifik Holding](https://www.tamtam.ai/c/pasifik-holding) (pasifik.com)<br>A diversified group with expertise in real estate, construction, logistics, international trade, manufacturing, and technology, creating value, supporting exports, and fostering economic development | Holding Companies | 🇹🇷 Ankara | 484 | 2008 |
| 27 | [Çiftay A.Ş.](https://www.tamtam.ai/c/ciftay-a-s) (ciftay.com.tr)<br>Operating since 1963, the organization started with excavation and mining activities, later expanding into construction, energy, and tourism sectors with a focus on quality management systems | Mining | 🇹🇷 Ankara | 438 | 1963 |
| 28 | [Başkent Doğalgaz Dağıtım GYO A.Ş.](https://www.tamtam.ai/c/baskent-dogalgaz-dag-t-m-gyo-a-s) (baskentdogalgaz.com.tr)<br>A leading natural gas distribution company in Ankara, serving over 2 million customers with a focus on quality, safety, and customer satisfaction | Oil and Gas | 🇹🇷 Ankara | 365 | 2007 |
| 29 | [ŞA-RA Şirketler Grubu](https://www.tamtam.ai/c/sa-ra-sirketler-grubu) (sara.com.tr)<br>Established in 1985, we operate globally in energy, construction, and tourism sectors, delivering high-quality projects with sound financial and technical capabilities | Electric Power Transmission, Control, and Distribution | 🇹🇷 Ankara | 365 | 1985 |
| 30 | [ANKARA](https://www.tamtam.ai/c/ankara) (setas.net.tc)<br>Specializing in electricity and natural gas services, providing essential energy solutions to our customers with a focus on reliability and sustainability | Oil and Gas | 🇹🇷 Ankara | 359 |  |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.

## More company lists in Ankara

- [The largest companies in Ankara](https://www.tamtam.ai/l/largest-companies-ankara) (314)
- [Multinational companies in Ankara](https://www.tamtam.ai/l/multinational-companies-ankara) (57)
- [Manufacturers in Ankara](https://www.tamtam.ai/l/manufacturers-ankara) (52)
- [Companies with in-house R&D in Ankara](https://www.tamtam.ai/l/r-and-d-companies-ankara) (48)
- [Public sector organisations in Ankara](https://www.tamtam.ai/l/public-sector-organisations-ankara) (46)
- [Corporate groups and holding companies in Ankara](https://www.tamtam.ai/l/holding-companies-ankara) (40)
- [Education providers in Ankara](https://www.tamtam.ai/l/education-companies-ankara) (32)
- [Critical infrastructure operators in Ankara](https://www.tamtam.ai/l/critical-infrastructure-operators-ankara) (29)
- [Construction companies in Ankara](https://www.tamtam.ai/l/construction-companies-ankara) (29)
- [Hardware manufacturers in Ankara](https://www.tamtam.ai/l/hardware-companies-ankara) (28)
- [Aerospace and defence companies in Ankara](https://www.tamtam.ai/l/aerospace-and-defense-companies-ankara) (26)

## The same list elsewhere in Turkey

- [Energy companies in Turkey](https://www.tamtam.ai/l/energy-companies-turkey) (197)
- [Energy companies in Istanbul](https://www.tamtam.ai/l/energy-companies-istanbul) (64)

---

Source: https://www.tamtam.ai/l/energy-companies-ankara