GTC Dış Ticaret Ltd. was established in 1993 in Istanbul by a female entrepreneur with a female main partner. The company has exported textile and ready-to-wear products from Turkey to Sears Roebuck & Sons and KMart Corporation in the USA from 1993 to 2017 in an uninterrupted manner, and then moved its registered office to Adıyaman and established a textile dyehouse in 2004. Searching for a new industry to operate as of 2010, the company decided to enter the solar power market in 2012, and thus created a multi-purpose, flexible and R&D compliant manufacturing line of solar panels in 2013 in Adıyaman. Having employed newly graduated engineers, trained them in the field of solar panels and, directed them to work for R&D efforts between 2013 and 2016, the company has completed 2 Tubitak projects in 3 years and, accordingly designed and manufactured bifacial and double glass solar panels with a high degree of seasonal and mechanical resistance, for which the testing and certification processes have been successfully completed making use of technologies intended as to minimize the wastage during production. It was entitled to a Utility Model in 2016 with its solar panel output. It is registered by the Ministry of Industry as an R&D Center.

Having put up for sale and started the mass-production of the high efficiency solar panels capable of undergoing the tests that are 6 times longer than the competitive solar panels in 2017, the company has made the solar panel production line a full autonomous system with a capacity of 135 MW in line with its own technology. Further, it has increased the number of the team members to 65 engineers, started its 3rd Tubitak Project on solar cells and, carried out the design and feasibility stages for bifacial PERC and heterojunction cells. Having achieved to be entitled to be included into the KOSGEB Technology Investment Program within the scope of this project, the company has changed its name and type and registered as GTC Güneş Sanayi ve Ticaret A.Ş. deciding to continue its business operations only in the solar power industry and establish a solar cell factory.

In spite of the certain market difficulties restricting the production of the company to an average amount of 25 MW per year from 2017 to 2020, the team has seized a chance during this period of working on optimum installation of a power plant, and the actual application thereof and, creating a significant size of performance reference. Further, these years have contributed to the progress of awareness of investors and proved the importance of the state power policies. Upon the inclusion of a Technology Venture Capital Fund from Re-Pie Gayrimenkul ve Girişim Sermayesi Portföy Yönetim A.Ş. to the company as of March 2020, the company has achieved to complete its solar cell factory in Bor, Niğde, and this has made possible for GTC to manufacture domestic solar panels using its own technology with a local content ratio of 70% at the solar power sector. This was the expected and long-awaited achievement from the trademark TürkPanel registered in 2017.

In addition to the ground-mounted solar power plants, the company manufactured optimum solar panels for the installation at airports, BIPV and roofs for 6 corporate customers listed at the top 100 and got accredited for the installation of power plants with its own solar panels. Attaching great importance to the health of its team during the pandemic process, the company had got a chance of explaining what it has achieved so far and what it aims for the future to the business world through various communication channels and, further strengthened the capabilities of its team.

At the same time, despite the two major earthquakes centered in Kahramanmaraş on February 6, 2023, the company quickly recovered from its wounds, reactivated its production line, and established a 40 container city for its employees in the campus where the production factory is located. Despite all the negativities, with the great dedication of our employees, we returned to the pre-earthquake working tempo.



GTC (Gıda Tekstil Cihaz) Dış Ticaret established


Registered office moved to Adıyaman


25MW FV Module Production Line

Glass/Ceramic – Certification + Patent

Glass/Glass – Certification+ Utility Model


R&D Center registered with and approved by the Ministry of Industry


Automatic production line of 135MW


GTC & Re-Pie “Technology” Venture Capital Investment Fund


Niğde Bor OIZ
150MW Bifi Mono PERC Cell Production Line


The remains of an ancient memorial tomb found at the summit of the Mount Nemrut of 2,150 mm in height near Adıyaman have been listed in the UNESCO World Heritage List. These remains represent the power, eternity, peace, diplomacy, wisdom, universality and beauty. This link to our past brings us to the future. The figures of a king accompanied by gods, an eagle and lion have been placed on the Mount Nemrut in a way that faces the sunrise and sunset representing that there is a link between them and the son. Therefore, our logo is inspired from the statue of the King Antiochus that is surrounded by the sunlight. The King Antiochus at the summit of the Mount Nemrut represents the human mind and working and, the sustainability and power of the sun’s positive energy.

In spite of all the prejudices that an independent investor may have, GTC started to manufacture in Adıyaman, and carries on this path to make a dream come true for the purpose of serving both the region and Turkey.
GTC develops technologies as intended to make the best of the sun. To get the optimum benefit from the sun as an unlimited source of energy, GTC designs, develops and implements technologies to bring the advantages thereof to the society and environment.

Corporate Vision

GTC’s vision is to be a technology company. It is a research and development center. Our aim is to offer innovative, equitable and democratic energy solutions for the society, and ensure the consumer security, environmental sustainability, long-term cost minimization and occupational safety.

When it was established by a female entrepreneur in Istanbul in 1993, GTC has set its foundation principles and operated based on these principles:

  • Consumer security,
  • Sustainability in supply and sales,
  • Environmental sustainability,
  • Lowest cost without compromising on quality,
  • Employees’ rights,
  • Women’s rights,
  • Working environment with no discrimination,
  • Public health,

Engaging in foreign trade, the company has set its manufacturing base in Southeastern Anatolia after 1997. GTC invested all the economic, commercial, administrative and industrial skills and revenues it has gained in Southeastern Anatolia during a period of 15 years in this region in 2013 by means of establishing an R&D oriented, technological, photovoltaic module manufacturing factory in Adıyaman. During a business cycle while most of the significant investors in the region were moving their investments outside the region, the loyalty and faith of GTC in this region is the true proof of the reliability and competence of GTC.

As a small-scale and independent company, GTC has always protected and honored the rights of its customers, suppliers and employees. This principle has made it possible for the company to establish strong, long lasting, sustainable, common mind & ground based relationships with its customers, suppliers and employees.

GTC has never considered a business model only to increase its short-term benefits. Its business philosophy has always focused on the long-term achievement for the development of the top quality products, the delivery of customer satisfaction and, the provision of the most reliable supply chain. GTC is aware of the fact that it has to manufacture the best quality and the most durable products for sustainability in the long term.

GTC Güneş Sanayi ve Ticaret A.Ş. has set and prepared its Quality Management System (QMS), Environmental Management System (EMS) and Occupational Health and Safety System (OHS) in line with the requirements at set forth under the standards ISO 9001,ISO 14001 and ISO 45001.

The work scope of GTC is that it aims to design, manufacture and sell solar panels and equipment that are capable of converting the solar power to electricity in the most ecological manner, with the least wastage and for the longest period of operation. This work scope defined above is based on the qualification of our organization, the complexity and interaction of our processes, and the competency of our personnel.

CHAIRPERSON: Ayşe Çiğdem Besen

  • Robert College
  • Bachelor’s License in Nuclear Engineering at MIT
  • Bachelor’s License in Political Sciences at MIT
  • Master’s Degree in Plasma Physics at MIT
  • Master’s Degree in Development Economics at Cambridge University

Çiğdem has spent 25 years working at the clothing factories in the least developed regions in Turkey to sell products to the stores of Sears and KMart in the USA. She has focused on the contribution of female employees to the production, provision of increase in the incomes obtained by them, self-sustained local economies and, ‘domestic goods’.

During this process, she has always remained to be physicist in spirit and at heart, and invested all the resources available the company in a solar power factory that she established in another underdeveloped region with newly graduated local engineers. She has spent the period from 2013 to 2015 organizing seminars to train the GTC team with the participation of professionals in this area from solar power suppliers, machinery manufacturers and research centers. She has aimed at a proactive business model through which the employees could take responsibilities and participate in the management in due course.

Çiğdem’s passion for research and development in the field of solar power has resulted in the establishment of the first private R&D center in Turkey. The aim is to position GTC as an advanced technology company and, create a worldwide-known brand in Turkey.

OUR STRONG PARTNER: Re-Pie Teknoloji Girişim Sermayesi Fonu

Re-Pie Technology Venture Capital Fund

pension funds
indirect pension participants
strategic investors

have made investments in our company.









“CMB” approvals & fund establishment processes

April 2017

Turkey’s first real estate investment trust to make investments

July 2017

First “REIT” to get investment from pension funds

September 2017

Venture Fund License

January 2018

First fund to sell real estate

March 2018

First fund to make investments based on debts

May 2018

Avrasya “REIT” Exchange Rate Listing

August 2018

“QInvest Re-Pie GYF” Founder| Manager

October 2018

“GETİR” Venture Capital Investment Fund

May 2019

“QInvest Re-Pie REIT” Exchange Rate Listing

May 2019

“Fiba Re-Pie GYF” Founder | Manager

January 2020

“Technology” Venture Capital Investment Fund


  • Yıldız Technical University
  • MIT
  • Boğaziçi University

Dr. M. Emre Çamlıbel, a founding partner and Chairperson at Re-Pie Portföy Yönetimi A.Ş., has received his bachelor’s degree in civil engineering from Yıldız Technical University, and his master’s degree from Massachusetts Institute of Technology, Boston in the USA. Çamlıbel has a doctorate from the Department of Civil Engineering at Boğaziçi University in the fields of energy efficiency and savings, energy systems, sustainability, carbon trading, financing and applications. Dr. M. Emre Çamlıbel started his professional career at STFA as a civil engineer in 1992, and then held the positions of project engineer and manager at Kennedy & Rossi and Walsh Brothers located in Boston, the USA. He worked as Assistant General Manager at Soyak İnşaat and, then as Project Development Coordinator at Soyak Holding as from 1998. From 2001 to 2008, he has held the positions of General Manager and Board Member at Soyak Yapı, and then the position of CEO at Soyak Holding until 2016. He has also held the position of board member for many companies locally and internationally. Dr. M. Emre Çamlıbel is the Vice-Chairperson at İNDER. He has an experience of 30 years locally and internationally in the fields of project management and business development, in particular, for the real estate industry. Re-Pie Portfolio Management Company for which Dr. M. Emre Çamlıbel started to hold the position of Chairperson in 2016 managed a portfolio of TL 2.5 Bn. He is a part-time academician at Boğaziçi University, a lecturer at VGTU and, a visiting professor for at MIT, Columbia, Berkeley, UTSA and Oxford.


  • Boğaziçi University
  • Michigan Technology University
  • California University
  • UCLA

After graduating from the Department of Electrical Engineering at Boğaziçi University, Tayfun Çataltepe has received his Master’s Degree from Michigan Technology University and, his Doctorate Degree from California University, Los Angeles (UCLA). He served as Research and Development Engineer at Bell Laboratories from 1990 to 1998, and as Manager in charge of the management of IP Network and Service Planning projects at AT&T from 1998 to 2003. He held the position of Assistant General Manager in charge of the Technical Operations at Aycell from 2003 to 2004, and then the position of Assistant General Manager in charge of Network Operations at AVEA from 2004 to 2006 after the merger with Aycell. Çataltepe has thereafter held the position at Ernst & Young with responsibility Pro-Merger and Acquisition Corporate Integration Services at the Europe Telecommunication Sector. Dr. Çataltepe has served as Assistant General Manager at Turkcell in charge of various fields such as strategy, acquisitions, wholesale and regulation from 2007 to 2015. He has carried out the investment and operational efficient projects in the capacity of consultant to the senior general manager at Türk Telekom from 2016 to 2019. Dr. Çataltepe has held the position of board member for technology-oriented innovative companies operating in various areas.


  • Boğaziçi University
  • ITU

Mehmet Ali Ergin, a founding partner and Vice-Chairperson at Re-Pie Portföy Yönetimi A.Ş., has graduated from the Department of Business and Economics at Boğaziçi University, and received his master’s degree from Istanbul Technical University. Ergin has become specialized in the fields of investment model development and econometrics. Starting his professional career at the real estate industry while he was a student, and successfully completed many different projects, Ergin has managed land development projects. Ergin has managed projects in the field of commercial real estate of 310,000 m2, residential real estate of 600,000 m2 and, land development of 6 million m2 at the real estate industry. He has carried out various planning works for many metropolitan municipalities throughout Turkey and, developed mixed projects in various areas with branded residence manufacturers as members of GYODER and KONUTDER. Ergin has also provided consultancy support to public enterprises for investment projects. He is the founder and manager of a portfolio with the size of TL 2 Bn. in total consisting of 9 real estate investment funds and 11 venture capital funds making up 55% and 35% of the portfolio respectively. He is an investor and advisory board member for the business enterprise Udrive in the United Arab Emirates and the business enterprise Bringoo, and a board member for GTC Solar and Turknet İletişim A.Ş.