We are a diverse team of clean energy enthusiasts with a multi-GW track record. Our people have been involved in the value steps of origination, development, financing, construction, energy trading and asset optimization of clean energy assets across different countries.
We highly value local expertise and assemble strong local teams in our core markets.


Bekir Sami Acar​

Managing Director ​​​

Cleantech entrepreneur. 20 years of experience as a founder, executive and equity investor in the energy space. Over €2bn transaction experience across EMEA region. B.A. Political Science and International Relations Executive, MBA from Columbia Business School and London Business School.


Michiel Adriaanse​

Managing Director ​​​

17 years in investment banking and alternative asset management with ABN AMRO and Deutsche Bank. MSc. in electrical engineering from Delft University of Technology, executive MBA from London Business School and Certified Alternative Investment Analyst (CAIA).


Halit Emre​

Project Analyst​

Emre is experienced in the execution process of PV projects including preparing layouts, supervision of the construction and O&M processes. Prior to Claritas, Emre worked as a project engineer in a leading solar EPC company for 3 years. Emre holds a bachelor’s degree in energy systems engineering.


Erdem Eskiil ​

Director of Project Execution

Erdem has more than 12 years of experience in energy utility, generation, and trading. He is experienced in project optimisation utilising both financial and technical solutions. Erdem holds an engineering degree from RWTH Technical University of Aachen, Germany.


Maria Karamitrou​

Commercial Director ​

17 years of experience in commercial, marketing, and customer insight roles with blue-chip companies and consulting agencies in the UK and Greece. BSc in Business Information Systems, and MSc in Marketing Management from Bristol Business School.

Latif (1)

Latifsen Kuluk

Financial Controller

Latif has over 4 years of hands on experience in management accounting, financial controlling and investment appraisal of renewable energy transition assets. He has a solid track record grown inhouse and a well-educated background with completing CIMA exams and holding an MSc in Accounting and Management from Queen Mary University London.

Jakub Kupcu - Investment Manager

Jakub Kupcu

Country Director, Poland

Jakub is an experienced Business Developer. Prior to joining CLARITAS, Jakub worked for Axpo Group, building his experience in power&gas markets, as well as environmental certificates trading. Jakub is a Law graduate with postgraduate studies from Warsaw School of Economics.


Henk Labigar

Senior Accountant

Henk has 20+ years of accounting experience as financial controller and accounting supervisor with a solid track record in Sarbanes Oxley auditing for US listed companies. Bachelor’s degree in Accountancy and Tax Law from Markus Verbeek Amsterdam.


Dirk Lamottke

Managing Director

Dirk has 16 years of extensive experience in renewable energy business and 20 years as a commercial lawyer. He has held high profile roles in energy projects for TenneT in the Netherlands, for ABB Sweden and further reputed European project developers. Dirk holds a Law Degree from the University of Cologne, an MBA in sustainability management and executive education from Yale University.

Helene Saraber

Assistant Accountant

With over 20 years of experience Helene is responsible for the AR/AP administration of the group.

Nikolaos Siafakas

Director of Project Development,

15 years of experience in Solar Design Development, licensing procedures and Installation in projects of 750MW in Greece and internationally. Electrical & Electronics Engineer degree with MSc in Product Innovation and Development from University of Brighton, UK.


Katarzyna (Kasia) Sobotka

Investment Manager E-Mobility

Kasia’s extensive professional experience covers numerous projects in the field of innovation and electromobility in the CEE region. Prior to joining Claritas, Kasia worked for InnoEnergy, ABB and PKN Orlen building her experience in the emerging EV sector. Kasia is a graduate of the Warsaw University of Technology and is a laureate of multiple international awards.


Irena Tchorzewska


Irena has over 20 years of accounting experience as accountant and chief accountant in international companies such as Telko Poland, IFIS Finance, Franke, WSP, NIRAS and PGE Baltica. Postgraduate studies in Finance and Accountancy.


Fragkiskos Zanios

Accounting Manager

Fragkiskos has 15 years of experience in Accounting and Finance, most of which as a Senior Accountant in the RES landscape. Fragkiskos holds a BSc in Accounting from the Technical University of Crete and has A’ Class signatory rights from the Greek Economic Chamber of Commerce and carries extensive hands on experience with IFRS.