Research Fellows

Dimitrios Mezartasoglou commenced his cooperation with IENE in 2015 as an inhouse researcher and he is currently Head of Research. He has studied Economics and he holds two Master’s degrees from the University of Strathclyde on Global Energy Management and from the University of Exeter on Money and Banking.

Whilst at IENE, Dimitrios has contributed to a number of research projects, and major studies including "SE Europe Energy Outlook 2016/2017”, the Greek Energy Sector Annual Reports (2019, 2020), “Prospects for the Establishment of Gas Trading Hubs in SE Europe”, while he is Assistant Editor of "Market Fundamentals and Prices”, "Monthly Analysis” and several other IENE’s newsletters. In addition, since 2016, he is a contributing editor of where he regularly contributes articles and analyses on energy market, the economy and banking.


Alexandros Perellis is a Senior Researcher at IENE. He is an Industrial Engineer, graduate of Democritus University of Thrace’s School of Engineering (DUTH). In addition, he holds an MSc degree in Sustainable Energy Engineering from Technical University of Denmark (DTU). He has experience in the elaboration of projects related to solar energy systems, modeling and analysis of sustainable energy systems, energy efficiency, feasibility studies and system assessment of energy technologies. As master student, he participated in TOPWASTE project in collaboration with Risø DTU, where he contributed in the development of OptiWaste, a mathematical modeling tool, which handles optimization of waste and energy flows and can be integrated into large energy optimization models.

He joined IENE’s research team in November 2017. He is responsible for the publication of “Electric Mobility Update” (Bimonthly Newsletter of IENE) and “SEE Electricity Market Analysis” (Weekly and Monthly Newsletter of IENE) and participates in the elaboration of the Institute’s research projects and analyses, with main focus on RES and sustainability. He is the main author of several IENE studies, e.g. “Prospects for the Electric Vehicle Market in Greece and Business Opportunities”, “Energy Transition of the Island of Kastellorizo” and “The Integrated Electricity Markets in Greece and SE Europe, the Role of the International Electricity Interconnections and the Impact on Industry”.


Ms. Eirini Terzidou joined IENE in 2021. She is a graduate from the department of Chemical Engineering of Aristotle University of Thessaloniki and holds an MSc degree in Environmental Technology from University of Manchester Institute of Science and Technology (UMIST) and a Master of Business Administration (MBA) from the European University of Cyprus.

Eirini has strong background related to the environment and energy sector. In 2013, she was hired by the Centre for Renewable Energy Sources (CRES) to be involved in the licensing process of renewable energy sources (RES) projects (issuing production/installation/operation license) for the Department of Renewable energy sources in the Ministry of Environment, Energy and Climate Change. She was also responsible for providing information to investors on the institutional, legislative, fiscal and financing framework necessary for the licensing procedures for investments in RES.

In addition, she has worked in the area of management systems, especially in designing and implementing quality and environmental management systems (ISO 9001/ISO 14001) in different kind of companies.

Eirini has also conducted sector studies in the field of renewable energy sources, waste management and recycling.


From 2007 until the end of 2017 Nicholas Sofianos held various positions at IENE completing his tenue as the Institute’s Coordinator of Research and Deputy Executive Director. At IENE he carried out research on Renewable Energy Sources (RES) and their application in SE Europe. He was IENE’s coordinator in the EU funded GEOFAR project, part of the Energy Intelligence programme. He also has a strong interest on energy policy issues and he is the Assistant Editor of "Energy Matters" (Monthly newsletter of IENE) and of the "South East Europe Energy Brief" (a series of monthly IENE newsletters). He is the author of many articles on energy and he has participated as a speaker in several conferences, seminars and workshops in Greece and other European countries. He has an Mphil Development Studies degree from the University of Glasgow in Scotland.
Nicholas Sofianos maintains a close working relationship with IENE and currently he is an external Senior Research Associate of IENE and a Member of the Board of Directors.


Costas Theofylaktos is a USA trained Mechanical Engineer, with a BSc and an MSc from the University of Evansville, Indiana, with 33-yrs experience in the energy sector and in the study, design and supervision of energy efficient systems for any type of buildings and for industry.

Costas’s special interests include Energy Policy, Energy Efficiency, RES and Cogeneration of Heat and Power. He is currently the President of Greece’s Association for Cogeneration, HACHP.

Ηe served as Chairman and CEO of the Centre of Renewable Energy Sources (CRES) and he has an extensive experience in EU- and EBRD-funded energy projects in SE Europe, Asia and Russia.


Dimitris Bimpas is a graduate of the Department of Economics, University of Macedonia and holds two postgraduate Master degrees in Economic and Social Policy (MSc, University of York, UK) and Economic Science (MPhil, National and Kapodistrian University of Athens). Currently, he is Scientific Advisor of Hellenic Economic and Social Council.

With regard to his professional experience, D. Bimpas has been for 7 years research associate of the GSEVEE Small Enterprises’ Institute (2012-2018), he was responsible for documenting GSEVEE's positions, drafting economic policy recommendations, and was the project coordinator for preparing and analyzing biannual economic climate surveys for small businesses, annual household income survey; on parallel, he has participated in monitoring committees and working groups composed of representatives of international organizations and national bodies on issues related to the economic policy. During 2018, he has been appointed as an external expert of the International Labor Office, exploring primarily the issue of undeclared work in enterprises and barriers to transition to the formal sector of the economy. During the period 2016-2018, he was a member of the Board of Directors of the EOPYY (National Organization for the Provision of Health Services) and member of the Entrepreneurship Fund Investment Committee, as a representative appointed by the Employers' Group. He is a Senior Research Associate of IENE having contributed to a number of studies and research projects of the Institute.

Dimitris Bimpas has worked as an advisor/ evaluator to the Ministry of Economy and Development (in the field of investment policy, SMEs and the assessment of social and economic policy). He has been involved in various research projects of the Department of Economics, University of Athens, with the main focus on the identification of the needs of small and medium-sized enterprises. He has been appointed as teaching assistant in the course "International Economics", at the postgraduate program "Accounting and Auditing" of the Department of Economic Science, UoA. He has also taught at the TEI of Athens, at the National Center for Public Administration, at the Institute for Lifetime Adult Education and other non-formal education schemes specialized on topics of public economics, economic policy and SMEs.

He has participated in working groups of the Economic and Social Committee of Greece, which drafts opinions on the bills submitted for voting in the Greek Parliament (indicative issues: minimum guaranteed income, business licensing scheme, investment law, socioeconomic impact of pandemic crisis).

EVENTS 26th "Energy & Development 2022" 22nd World LNG


PUBLICATIONS South East Europe Energy Outlook 2021/2022 The Greek Energy Sector 2020 Long-Term Gas Contracting Terms, definitions, pricing - Therory and practice More

COOPERATING ORGANISATIONS IEA Energy Institute Energy Community Eurelectric Eurogas Energy Management Institute BBSPA AERS ROEC BPIE