TUNCA ATTORNEY PARTNERSHIP > Ankara, Turkey > Firm Profile


Turkey > Energy Tier 3

TUNCA ATTORNEY PARTNERSHIPhandles all of the problems a company working in the energy industry might face' and is especially active in project support, including contract negotiations and regulatory advice. It has a particular strength in public law and has developed a niche in advising Turkey’s Ministry of Energy and Natural Resources, alongside its client base of private companies. Practice head Sidar Tunca is recommended for his ‘very good litigation skills and experience in energy law'.

Practice head(s):

Sidar Tunca

Other key lawyers:

Şirin Elif Öztürk


‘They have a superb team that has advised on lots of deals in the past. Therefore, their expertise is very beneficial for the client. They can foresee what is going to come.’

‘The team’s commitment and knowledge of both energy and administrative law are the key factors in their success with our cases, as well as their trust in each other’s work. The variety of fields of law that Tunca Attorney Partnership can advise on is another of the fundamental reasons why their clients recommend them. As individuals, they are all experts in their subjects so the lawyers have the same standard regardless of which field of law the client needs advice on. Sidar Tunca is a standout partner. His very good litigation skills and experience in energy law deserve mention.’

‘The team consists of hardworking individuals who have helped us a lot during the pandemic. They have provided insight on all matters regarding the energy sector.’

‘All of the individuals are team workers and they show great care for every client. Whenever we needed help, they were ready to help and guide us. We were very satisfied with the level of service we received from Tunca Attorney Partnership.’

‘The head of Tunca Attorney Partnership, Sidar Tunca, is a very talented lawyer. He has impressive negotiating and mediating skills. His background in energy, mining, arbitration, public tender and commercial law is very extensive. Therefore, he can easily handle different and sophisticated problems. The most important thing about Tunca Attorney Partnership is their credible, hardworking and innovative lawyers, who always try to think outside the box.’

‘Tunca Attorney Partnership stands out for us because of its professionalism and integrity. Their capabilities enable them to execute the most important transactions and cases efficiently, and meet all of our industry’s domestic and international requirements. They are keen to use technology to improve client service. Lastly, they handle all of the problems a company working in the energy industry might face with great attention to detail and under very strict time restrictions. We have never had an issue regarding a deadline and this is crucial to us since the energy industry requires fast-paced action to be taken.’

‘Everyone at Tunca Attorney Partnership has advanced expertise that has been tailored to the most difficult and innovative projects. They pay special attention to each project. They consistently give excellent service and meet our needs. While most attorneys focus on a single field of law, the needs and wishes of clients necessitate the existence of an office with experts in multiple fields. Thanks to the diversity of expertise in this team, it fully meets the needs and wishes of its clients. The attorneys’ ability to look at matters from different angles has helped us greatly in the past.’

‘Sidar Tunca’s approach is always “we can do it” and that makes him an excellent lawyer. He has an amazing ability to build different strategies for each case while taking into account any possible development and providing us with the highest quality work.’

Key clients

Republic of Turkey Ministry of Energy and Natural Resources

Tüprag Metal ve Madencilik

Albedo BS Elektrik Üretim

Düzgün Iş Makinalari Inşaat Madencilik

Limak Enerji

Imbat Enerji

ITC-Ka enerji Üretim

Alacer Gold Madencilik

Aşkale Çimento

Yildizlar Enerji Elektrik Üretim

Hypco Petrolcülük

FTZ Akaryakit Otomotiv Inşaat Taahhüt Tekstil Gida Paketleme

Egemen Inşaat

Arakli Elektrik Üretim

KRC Hes Enerji Üretim

Bakras Enerji Elektrik Üretim

Zafer Taahhüt Inşaat ve Ticaret

Özdoğan Enerji

Özaltin Inşaat Enerji

Atomenergoremont PJSC

Work highlights

  • Advising the Ministry of Energy and Natural Resources on the RES 1 wind power plant project.
  • Advising the Ministry of Energy and Natural Resources on solar power plant projects.
  • Assisting the Ministry of Energy and Natural Resources with the YEKA GES-3 project, which consists of solar power plants with a 15-20MW capacity that will be built across 19 regions.

Turkey > Employment Tier 4

TUNCA ATTORNEY PARTNERSHIP advises multinational corporates, large domestic companies and public institutions across a range of sectors, including pharmaceutical, energy, and construction. Sidar Tunca and Ayşegül Filiz are the key names in the department, which is well versed in contentious and non-contentious matters.

Practice head(s):

Sidar Tunca; Ayşegül Filiz


‘Tunca Law Office is unique for us because of its trustworthiness and professionalism.’

‘They are reasonable when it comes to prices, and its capability allows it to handle the most significant transactions and cases quickly, even on very short notices.’

‘Everyone in Tunca Law’s team has very high technical skills tailored for the most complicated and innovative jobs.’

‘Thanks to these skills and the teamwork that exists within each and every member of the Tunca Law family, Tunca Law has came to be well-known for performing high-stakes, cutting-edge transactions.’

‘They always provide us with the best service and satisfy our needs.’

‘They are patient and deliver excellent and quick outcomes even when they are under pressure.’

‘Tunca Law provides us with high-quality legal services at fair and reasonable costs.’

‘Sidar Tunca is a knowledgeable, constructive, helpful and responsive attorney.’

Key clients

İlaç Endüstrisi İşverenler Sendikası (İEİS)

Abdi İbrahim İlaç Sanayi ve Ticaret A.Ş.

Republic of Turkey Ministry of National Education Directorate General For Life Long Learning / Promoting Integration of Syrian Kids into the Turkish Education System (PIKTES) Coordinatorship

Anagold Madencilik Sanayi ve Ticaret A.Ş.

Tüprag Metal Madencilik Sanayi ve Ticaret A.Ş.

Energo-Pro İnşaat Sanayi ve Ticaret A.Ş.

Caba İnşaat Enerji Turizm Sanayi ve Ticaret A.Ş.

Gürbağ İnşaat Mühendislik Madencilik Sanayi ve Ticaret A.Ş.

WYG International Danışmanlık Ltd. Şti.

Mövenpick Hotel&Resorts

Kuzu Toplu Konut İnşaat A.Ş.

FTZ Akaryakıt Otomotiv İnşaat Taahhüt Tekstil Gıda Paketleme Sanayi ve Ticaret Ltd. Şti.

Elvan Gıda San. ve Tic. A.Ş.

TOBB Ekonomi ve Teknoloji Üniversitesi

Teleses Telekominikasyon İnşaat Sanayi ve Ticaret A.Ş.

Tefirom İnşaat Enerji San. ve Tic. A.Ş.

Ulubol İnşaat Sanayi ve Ticaret A.Ş.

Work highlights

  • Advising İlaç Endüstrisi İşverenler Sendikası on a variety of employment law issues, including health legislation, filing lawsuits against unlawful regulatory actions in order to protect the rights of members, labor law, and social security law.
  • Acting for Abdi İbrahim on cross-border employment issues, including employee transfers, employee remuneration, and termination issues.
  • Advising The Ministry of National Education on its educational project to promote the integration of Syrian children into the Turkish education system (PIKTES).

Turkey > Dispute resolution Tier 5

Sidar Tunca is the key name at TUNCA ATTORNEY PARTNERSHIP. The firm has a good track record handling administrative and civil litigation across a range of sectors, including energy, construction, financial services, transport and telecoms.    

Practice head(s):

Sidar Tunca


‘The speed of response, the ability to provide a risk minimizing/strategic legal service, very focused litigation service.’

‘Sidar Tunca is very knowledgeable. He is always one phone call away. Makes the life of the client easy.’

‘The team is very impressive, both with the experience and credentials they bring to the table but also with each member’s knowledgeableness, interest, openness, reliability, diligence, efficiency & warm yet professional approach.’

‘Each member brings value to the task at hand.

‘Tunca Attorney Partnership comes to the forefront with its creative and full-fledged solutions to our comprehensive legal problems. Therefore we always recommend this law firm to our partner companies.’

‘Sidar Tunca is well-known in his field for applying timely and satisfying legal solutions to his clients.’

‘Sidar Tunca is a hardworking, creative and solution-oriented person. His positive attitude against sophisticated problems makes him different from competitors. For this reason, we are happy to do business with this amazing team.’

‘What really surprised us was their deep understanding of not only the legal side but also the technicalities of our work.’

Key clients





















Work highlights

  • Acting for Albedo in a dispute involving the Gürsöğüt Dam and HPP hydroelectric power plant project (HPP).
  • Acting in two lawsuits on behalf Gurbag arising from the tender for the construction of a 600-bed state hospital.
  • Representing AŞKALE ÇIMENTO in a lawsuit concerning the company’s operations in the electricity market that were made subject to administrative sanctions on the grounds of violation of market rules.

TUNCA ATTORNEY PARTNERSHIP was founded in 2006 by Sidar TUNCA. The Firm is based in Ankara and our network also consists of partner offices in major locations of Turkey such as Istanbul, Izmir, Bursa, Adana and Antalya. Focusing mainly on litigation and consultancy services in the fields of energy law, mining law, construction law, labour law and project finance, our team is dedicated to provide tailor-made legal services to our clients in a diligent manner.

TUNCA has more than 20 lawyers diversely specialized in various areas of law, and a professional support team. Our team provides legal services in English, Turkish, Russian and German. TUNCA also has an international network consisting of correspondent law firms and consulting companies acting in various jurisdictions such as Gulf countries, Europe, Russia, U.K., U.S.A. and Middle East. In its constant effort to enhance and excel at its legal service, stretching from counselling to litigation, TUNCA acts as per its principle of providing high quality services with dynamism and in-depth understanding of the clients’ changing needs.

TUNCA advises a wide spectrum of government institutions and enterprises and their stakeholders, ranging from medium-sized owner-managed businesses to large public companies and multinational corporations. Special focus is related to PPP Projects, energy and natural resources, corporate and commercial and dispute resolution including ADR.

In 2017, TUNCA strengthened its international practice with the establishment of TUNCA LAW INTERNATIONAL (www.tunca-international.com) as an entity which combines the prominent experience of its local lawyers with the international experience of a dynamic team composed of highly specialized lawyers and legal advisers experienced in various jurisdictions, whose legal expertise includes consultancy on cross-border investments, public and private international law, and international arbitration.

Areas of Practice

Energy and natural resources: Our team has in-depth knowledge on procedures and regulations in the sphere of energy projects in Turkey. The team is led by Sidar TUNCA, founding partner of TUNCA, along with associates and senior associates. Moreover, members of our team have taken parts in cross-border strategic energy projects. TUNCA’s expertise in Energy Law covers all aspects of power plant projects, oil, gas and minerals industries. We represent a broad range of interests in energy sector such as generators, gas and energy traders and marketers, energy service providers, pipeline companies, industrial and commercial customers, investors, public entities and others in connection with the structuring, financing, regulatory approval and operation of power plants, energy market-related contract law, regulatory matters and litigation.

Construction and real estate: TUNCA’s expertise in construction covers Build-Operate-Transfer projects, public and private tenders, concession contracts, joint ventures, construction contracts, subcontracts, license agreements, project management agreements, operational management agreements, contract administration, claim management and, where necessary resolving disputes through court litigation. The legal counselling provided by our experts assists clients through all phases from development to completion of real estate and infrastructure projects, including large scale ones, implemented in various regions of Turkey.

Commercial, Corporate and M&A: TUNCA successfully manages incorporation and restructuring procedures of its client companies. We also respond our clients’ day-by-day corporate needs and compliance issues by providing them both oral and written legal advices. Thereby, TUNCA consistently helps its foreign clients being in compliance with Turkish law and protects them from unexpected damages arising out of incompliance with the current legislation. Our team also advices on merger and acquisition transactions by combining the expertise in conducting comprehensive due diligence process, granting the necessary permits from the related governmental bodies such as Competition Board and diligent follow-up of the legal and administrative procedures.

Labour Law: is one the strongest practice areas of TUNCA. Our Labour Law team provides services to the Client in a timely manner by taking the applicable laws and regulations, recent judicial practice and legal doctrine covering all aspects of the employer-employee relationship and intergovernmental agreements in this sphere into account. Partner Ayşegül FİLİZ heads the department which consists of experienced litigators and associates.

Intellectual property and telecommunications: We provide proactive and strategic advice on how companies can protect and enforce their intellectual property rights in copyright, trademarks, patents, trade names, domain names, design and know-how. Our lawyers and trademark attorneys have extensive experience in telecommunication-related regulatory matters; negotiating and drafting intellectual property agreements, licensing agreements, transfer agreements of registered trademarks and patents, technical assistance agreements, technology transfer agreements, management agreements, distribution agreements, and franchising agreements.

International business transactions: TUNCA provides strategic business consultancy for complex cross-border trade and investment projects in association with TUNCA Law International. For each matter, we build an operational team of lawyers and advisors admitted in the concerned jurisdiction and bilateral or multilateral investment treaties. Thus, a comprehensive approach enables us to provide innovative consultancy services to address the needs of our clients.

Energy and natural resources Sidar Tuncasidartunca@tuncahukuk.com+90 312 427 24 02
Corporate, mergers and acquisitions Sidar Tuncasidartunca@tuncahukuk.com+90 312 427 24 02
Construction and real estate Sidar Tuncasidartunca@tuncahukuk.com+90 312 427 24 02
Dispute resolution: litigation and mediation Sidar Tuncasidartunca@tuncahukuk.com+90 312 427 24 02
Dispute resolution: litigation and mediation Ayşegül Filizaysegulfiliz@tuncahukuk.com+90 312 427 24 02
Intellectual property and telecommunications Ceren Uzuncerenuzun@tuncahukuk.com+90 312 427 24 02
International business and commercial law S. Elif Öztürkinternational@tuncahukuk.com+90 312 427 24 02
Labour Law Ayşegül Filizaysegulfiliz@tuncahukuk.com+90 312 427 24 02
S. ELIF ÖZTÜRK photo S. ELIF ÖZTÜRKPartner for International Law and Head of the International Arbitration practice
SIDAR TUNCA photo SIDAR TUNCAFounding Partner
ICC Turkey


CLIENT: Gül Özdinç, Chief Legal Counsel
COMPANY/FIRM: OMV Samsun Elektrik Üretim San. ve Tic. A.S.
TESTIMONIAL: We have been working with Sidar Tunca since 2007. He advised some of our major projects including OMV Samsun Electricity Natural Gas Combined Cycle Power Plant, constructed by over 600 million Euros and has 890 MWe power capacity. Sidar is not only very experienced lawyer, but also entirely devoted to his clients and their needs.

CLIENT: Serdar Bacaksiz, Member of Board of Directors
COMPANY/FIRM: LIMAK, Limak Enerji Ticareti A.S.
TESTIMONIAL: Tunca Law Office handles our corporate matters since 2012. As a group of companies with many investments abroad, our construction and energy projects require effective solutions often concerning more than one jurisdiction. Tunca Law Office provide us with top tier international law firm quality service in proactive and timely efficient manner.

CLIENT: Cihan Kamer, Chairperson of Board of Directors
TESTIMONIAL: Sidar Tunca and the law office leaded by him handled many of our business transactions. He is reliable and trustworthy, knows our company and our business and present us effective solutions.

CLIENT: Ali Özdogan, Member of Board of Directors
TESTIMONIAL: Precise, result oriented, innovative and devoted that is how we can describe Tunca Law Office’s team. They provide Özdogan Group of companies with legal consulting services on matters related to Energy law, Trade law, Construction and Employment Law and represent our interests in many litigations. When you lead group of companies operating in different industries the last you need to hear from your lawyer is “ it is not possible”, Sidar Tunca’s approach is “we can do” and that makes him the preferred legal adviser for us.


Sidar Tunca, Founding and Managing Partner

Founding and Managing Partner Sidar Tunca, explains how the Firm is adapting to its growth strategy and clients’ changing needs.

What do you see as the main points that differentiate TUNCA ATTORNEY PARTNERSHIP from your competitors?

In our view, simple professional competence, when unsupported by in depth understanding of the corporate individuality of the client, is not enough to meet their long-term needs. We apply the same dedication to all our clients – a sole trader or a multinational corporation, each of our clients is equally valuable for us, because we treat them as a family. Each of our client knows that no matter what business challenges they face, we as “TUNCA LAW OFFICE” family will stay by their side and they can always rely on our support. This is not an approach for business development, it is part of our tradition that we value most. That explains why most of our clients are long-term clients.

Which practises do you see growing in the next 12 months? What are the drivers behind that?

Given the latest developments in the Turkish legislation, namely the announcement of the starting dates for the obligation to register with the Data Controllers Registry (“VERBİS”) and the growing importance of the specific EU Regulations, GDPR, we see Data Protection to be among the fastest growing legal practices for Turkey. To meet the needs of our clients, which have significant interaction with EU residents, either directly or as a vendor, we joined our efforts with our partner office in Paris to provide Data Privacy Compliance Consulting.

Civil Aviation Law is another sphere of law where specialized consultancy will be needed. The third international airport in Istanbul is now complete, the production and use of unmanned aerial vehicles is increasing in Turkey, new significant investments are at planning phase, so we expect that expertise in this field will be needed and invest efforts in the qualification of our legal team in order to present high level consultancy in this specific area.

The undisputed position of Turkey as crossroad of various energy routes means that Energy Law is a constantly growing area of expertise. We expect increasing numbers renewable energy projects not only in our country, but in the region also.

The last few years show upward trend of Turkey as a preferred place for international commercial arbitration and we believe this trend will continue in the next years. The arbitration friendly domestic legislation and the growing popularity of ISTAC (Istanbul Arbitration Center) attracts companies that need fast, cost saving and predictable dispute resolution.

Cross border investments consultancy will continue growing with special focus on Middle East and Chinese enterprises.

What’s the main change you’ve made in the firm that will benefit clients?

The most significant change we made in the last year was establishing our International Law practice. Since its establishment in 2006 TUNCA ATTORNEY PARTNERSHIP had been focusing mainly on Turkish Law. In order to serve the increasing needs of our clients on matters related to trade policy, and business and economic relations issues involving Turkish businesses engaged in foreign investment projects we joined our practices with Mrs S. Elif Ozturk – adviser in international law with over 16 years professional experience. As a result, Tunca Law International LLC (www.tunca-international.com ) was set up. Now we provide specially tailored consultancy that we named “several countries – one office”. To illustrate with an example, our client company representative comes to our Ankara office and there receives update on ongoing litigation in Turkish courts; advising, concerning his trading activities in Russia by Russian lawyers; conducts consultations via videoconference with lawyers in Paris or Washington for his pending arbitration case in ICC or ICSID, without having to travel to different countries for this. This saves both time and cost for our clients.

Is technology changing the way you interact with your clients, and the services you can provide them?

Technology is changing each sphere of our lives including the professional. Case management solutions, protecting data transfers, video and teleconference communication systems, shared platforms and reporting tools – we invest in various technology solutions that make our interaction with the clients more efficient and secure.

Can you give us a practical example of how you have helped a client to add value to their business?

We invest efforts to change the perception of the lawyer as “emergency worker coming for lifesaving operations”. While the big corporate companies take into account the importance of the strategic business legal consultancy, the middle level enterprises in our country still rely on their in-house counsels to handle all legal issues and seek established Law Offices only when, for example, the matter is already in court or a decision was already rendered against them in arbitration proceeding in foreign jurisdiction. This approach is erroneous.

Cost saving on legal services in the short term always leads to negative balance at the end.
Among the main factors for running successful business is involving the specialized lawyers’ opinion in the business decision making process. As we know well the business of our permanent clients, we follow and regularly provide them with analysis on all developments in the sector regulations, in the legislations of the foreign countries they invest or trade with. Thus, we help them better navigate the changing and complex legal environment.

Are clients looking for stability and strategic direction from their law firms? – where do you see the firm in three years time?

Growing TUNCA ATTORNEY PARTNERSHIP from a few practicing attorneys to a full-service law firm, as it is now, we aimed to provide our clients with the full range of legal expertise they might need. We will continue adding value to our practice, engaging with strategic partnerships and investing in the coming generation of lawyers via the programs for supporting the legal education of young students.

In the next three years TUNCA ATTORNEY PARTNERSHIP is aiming to engage more actively in law based projects of civil society organizations and international networks of professionals.