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.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
RÖNESANS HOLDİNGronesans.com
A multinational conglomerate based in Ankara, specializing in construction, real estate, healthcare, and energy projects across Europe, Asia, and Africa |
7,087 | |||
| 2 |
TEIASteias.gov.tr
Leading electricity transmission operator in Turkey, integrating into international energy markets, expanding infrastructure, and operating in quality, economically, and reliably |
3,816 | |||
| 3 |
Limak Group of Companieslimak.com.tr
Operating across diverse sectors including construction, energy, tourism, cement, infrastructure, technology, and food and beverage, with global and international operations. |
2,921 | |||
| 4 |
Koloğlu Holdingkolin.com.tr
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 |
2,697 | |||
| 5 |
BOTAŞbotas.gov.tr
A leading energy organization in Turkey focusing on oil and natural gas operations, LNG terminals, international transportation projects, and environmental sustainability |
2,180 | |||
| 6 |
EÜAŞ, (Elektrik Üretim Anonim Şirketi)euas.gov.tr
A state-owned entity responsible for operating thermal and hydraulic power plants, ensuring power supply security and building new plants when approved |
1,862 | |||
| 7 |
Çelikler Holdingceliklerholding.com
A leading Turkish entity focused on domestic production, construction, energy generation, mining, tourism with a large workforce and successful projects |
1,744 | |||
| 8 |
GÜRİŞ HOLDİNGguris.com.tr
Leading construction group specializing in engineering and construction of various infrastructure projects such as metro systems, bridges, dams, and sustainable energy plants |
1,654 | |||
| 9 |
GAMA Holdinggama.com.tr
A global leader in constructing power plants, refineries, infrastructure, and high-rise buildings, along with investments in energy, health, and tourism sectors |
1,520 | |||
| 10 |
Mapa Groupmapa.group
Multinational company specializing in construction, hospitality, renewable energy, airports, and air freight with extensive global operations and project management expertise. |
1,500 | |||
| 11 |
Akkuyu Nükleerakkuyu.com
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 |
1,488 | |||
| 12 |
YDA Groupyda.com.tr
A construction group with over half a century of experience in infrastructure projects, real estate development, aviation, healthcare, energy, and more |
1,263 | |||
| 13 |
Fernasfernas.com.tr
Founded in 1982, this construction firm has completed various projects internationally, including industrial plants, pipelines, dams, and infrastructure construction |
1,255 | |||
| 14 |
ASTOR A.Ş.astoras.com.tr
Leading manufacturer in the electromechanical industry sector, specializing in transformers and switchgear products, with a focus on quality, innovation, and global presence |
1,127 | |||
| 15 |
Enerjisa Başkent Elektrik Dağıtım A.Ş.enerjisa.com.tr
Page under construction with a focus on providing innovative solutions in a wide range of industries |
1,095 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 16 |
Turkish Electricity Distribution Corporation (TEDAŞ)tedas.gov.tr
Official page of a Turkish electricity distribution corporation providing essential services in the energy sector to customers and communities |
924 | |||
| 17 |
Çelikler Holdingceliklerholding.net
A diverse group operating in construction, mining, tourism, and energy sectors, specializing in projects such as infrastructure, mining production, and energy generation |
591 | |||
| 18 |
Fernas Construction Company Inc.fernas.com.tr
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 |
579 | |||
| 19 |
Türkerler Holdingturkerler.com
Global construction and energy sector leader in quality, innovation, and technology, operating in domestic and international markets with a commitment to constant renewal |
568 | |||
| 20 |
Europower Enerji ve Otomasyon Teknolojileri San.ve Tic. A.Ş.europowerenerji.com.tr
Specializing in designing, developing, and manufacturing LV-MV-HV electrical systems, offering turn-key contracting services for power generation, transmission, and distribution projects worldwide |
563 | |||
| 21 |
Özaltın Holdingozaltin.com
Leading organization in Turkey, specializing in construction, infrastructure projects such as dams, water treatment facilities, roads, bridges, railways, and various other sectors globally |
561 | |||
| 22 | 541 | ||||
| 23 |
YİĞİT AKÜyigitaku.com
Established in 1976, the company is a leading manufacturer of batteries, particularly lithium batteries for electric vehicles, exporting to over 100 countries worldwide |
519 | |||
| 24 |
Elektrik Üretim A.Ş.euas.gov.tr
TEAŞ is a conglomerate of three separate organizations in the energy sector: EÜAŞ, TEİAŞ, and TETAŞ, focusing on electricity generation, transmission, and trading |
511 | |||
| 25 |
YILDIZLAR GRUPyildizlar.com
With over 40 years of experience, the group specializes in construction, infrastructure, and energy projects, expanding internationally while delivering high-quality work on time |
502 | |||
| 26 |
Pasifik Holdingpasifik.com
A diversified group with expertise in real estate, construction, logistics, international trade, manufacturing, and technology, creating value, supporting exports, and fostering economic development |
484 | |||
| 27 |
Çiftay A.Ş.ciftay.com.tr
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 |
438 | |||
| 28 |
Başkent Doğalgaz Dağıtım GYO A.Ş.baskentdogalgaz.com.tr
A leading natural gas distribution company in Ankara, serving over 2 million customers with a focus on quality, safety, and customer satisfaction |
365 | |||
| 29 |
ŞA-RA Şirketler Grubusara.com.tr
Established in 1985, we operate globally in energy, construction, and tourism sectors, delivering high-quality projects with sound financial and technical capabilities |
365 | |||
| 30 | 
ANKARAsetas.net.tc
Specializing in electricity and natural gas services, providing essential energy solutions to our customers with a focus on reliability and sustainability |
359 | |||
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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 314
- Multinational companies in Ankara 57
- Manufacturers in Ankara 52
- Companies with in-house R&D in Ankara 48
- Public sector organisations in Ankara 46
- Corporate groups and holding companies in Ankara 40
- Education providers in Ankara 32
- Critical infrastructure operators in Ankara 29
- Construction companies in Ankara 29
- Hardware manufacturers in Ankara 28
- Aerospace and defence companies in Ankara 26