The Institute for European Energy and Climate Policy (IEECP) is a non-for-profit, independent research institute working, since 2015, on science-based climate change mitigation, energy efficiency and renewable energy policy, with an international interdisciplinary team of experts generating and disseminating scientific knowledge.

We act as a knowledge-hub sharing pragmatic results as well as innovative ideas providing policymakers, and all private and public decision-makers, independent expertise and science-based research to support their work towards the energy transition and a sustainable future.

IEECP has a rich experience in managing EU, climate action and energy transition projects – predominantly Horizon 2020-funded-, as coordinator or partner, engaging stakeholders, drafting policy syntheses and recommendations, evaluating policies, analysing data and statistics as well as developing tools, libraries, capacity building and learning programmes.

We work closely with EU institutions, international organisations, national, regional and local governments, think-tanks, NGOs, academics and the business world to lead the transition to climate neutrality and to a sustainable energy future for various sectors.

We build valued partnerships with renowned organisations from across Europe as we believe collaboration and creating a community helps carrying our ideas and results further, to shape, together, a low-emissions, resilient future.




History of IEECP

IEECP was established in The Netherlands in 2015. Today, IEECP experts are based all over Europe, in Belgium, Croatia, France, Greece, Hungary, Italy, The Netherlands and Turkey enabling local exchange and having tacit knowledge of these geographical areas. IEECP experts have close ties with the actual policy making world (from regional and national governments to the European Commission and the UNFCCC negotiators) ensuring that research outputs provide useful, pragmatic and evidence-based guidance to policy makers dealing with sustainable energy and climate change.

Board of Directors

Zsolt Lengyel (Marketing Director – Secretary)

Zsolt is a founding member of IEECP and has been serving as its Chairperson since its establishment in 2015, until August 2020. Zsolt is an economist, a climate action policy veteran and specialist of the corresponding instruments, policies & measures (EU ETS, (I)NDCs, Kyoto Flexible mechanisms, TCFD, Paris Agreement Art 6. etc.) with an engagement in the full cycle – from design, implementation to evaluation & auditing – of climate change mitigation and resilience globally. He has worked more than twenty years on climate action after starting his career at the Environment & Geography Department of the London School of Economics as a researcher in 1995.

Vlasios Oikonomou (Managing Director – Chairman)

Dr. Vlasios Oikonomou is Managing Director and Senior Researcher at IEECP, economist, who is coordinating for more than 10 years a series of EU funded projects in the field of energy efficiency policies and energy poverty (such as currently the Horizon 2020 projects ENSMOV on the Article 7 of the Energy Efficiency Directive and ENPOR on tackling energy poverty through energy efficiency policies). He has finalised his PhD on interactions of White Certificates energy and climate policy instruments, where he has published a series of articles in books and journals in this field and he is invited as energy efficiency policy expert in various EU policy conferences. He has also acted as co-panel leader for the Policy and Governance panel at the eceee Summer Study in 2019 and is reviewer to several scientific journals.

Among various European Projects, he coordinated H2020 PROSPECT on energy efficiency financing in municipalities and regions and participated to / coordinated more: H2020 PUBLENEF and EU-MERCI, H2020 EPATEE, IEE ENSPOL, FP7 POLIMP and APRAISE. He was acting as the Financial Director of IEECP until August 2020 and is responsible for the energy efficiency related activities of the Foundation.

Vassilis Stavrakas (Financial Director – Treasurer)

Vassilis Stavrakas holds a Bachelor (B.Sc.) and a Master (M.Sc.) degree in Mechanical Engineering from the National Technical University of Athens (NTUA) and is a senior research associate to IEECP. Since 2013, he has been working in EC-funded projects at the Technoeconomics of Energy Systems laboratory (TEESlab) of the University of Piraeus (UNIPI).  His research focuses in the modeling of low-carbon transition pathways, having developed the agent-based technology adoption model (ATOM) and the dynamic high-resolution demand-side management (DREEM) model, both parts of the TEESlab modeling suite (TEEM). He has several publications and announcements in knowledgeable peer-reviewed scientific journals and international conferences. He is currently acting as the Financial Director of IEECP and is responsible for modelling-related activities of the Foundation.

Partnerships / Memberships

eceeeIEECP is a member of eceee, the European Council for an Energy Efficient Economy.This NGO dedicated to energy efficiency generates and provides evidence-based knowledge and analysis of policies, and facilitates co-operation and networking.

IEECP supports eceee’s work, making energy efficiency’s voice stronger.

energy evaluationIEECP’s Jean-Sébastien Broc is a member of the board of the Energy Evaluation association (formerly known as IEPPEC – International Energy Policy and Programme Evaluation Conference).

Why IEECP and key topics we work on

As Europe strives to become the first continent in the world to reach climate neutrality by 2050, IEECP provides solutions, networking platforms and knowledge to:

  • Ensure authorities have the right tools to deliver the EU Green Deal and Paris Agreement obligations,
  • Enable knowledge-exchange on energy efficiency and climate policy design, as well as implementation and evaluation of their impacts, with a focus on key energy transition components such as:
    • Map, report on and tackle energy poverty,
    • Develop new business and financing models for energy efficiency,
    • Provide the market / industry the appropriate knowledge and understanding of what energy audits and efficiency first are and mean, as well as the multiple benefits of increasing energy efficiency,
    • Assist policymakers drafting measures and policies that will support achieving EU climate, energy and decarbonisation targets,
    • Provide policymakers with knowledge on how EU Directives (with a specific focus on the Energy Efficiency Directive and its article 7) are applied and translated at national, regional and local levels, ahead of and during decision-making processes.

View all projects IEECP is working on / has worked on, as coordinator or partner.

Our Team – click on the names to read more

To read our team “fun” bios, see here.

Dimitra Tzani

Dimitra is a Research Scientist at IEECP, participating in EC-funded projects, and holds a B.Sc. and M.Sc. degree in Mechanical Engineering, with specialization in Energy Engineering, from the National Technical University of Athens (NTUA). →

Filippos Anagnostopoulos

Filippos is Senior Associate at IEECP, involved as scientific and technical coordinator in the delivery of EU-funded research projects. Prior to joining IEECP, Filippos was Senior Consultant at EY, Research Associate at BPIE, and MEP Αssistant at the European Parliament. → Contact: filippos (at)

Jean-Sebastien Broc

Jean-Sébastien is specialised in the evaluation of energy efficiency policies, a driver for multidisciplinary work and experience sharing and is coordinating the Horizon 2020-funded project enefirst. → Contact: jsb (at)

Jérémy Cléro

Jeremy is an energy planning engineer who holds a M. Eng. In Sustainable Energy Planning & Management (Aalborg University) and a MSc in Energy Engineering (University of South Brittany). He has been working in European energy affairs since 2015, with a particular focus on H2020 projects related to energy efficiency

Roberta D’Angiolella

Roberta is Senior Communications Manager at IEECP, where she leads the communication and dissemination of many EU-funded projects. In this role, she develops and implements outreach campaigns and strategies, including project branding, social media, digital positioning, event management, media relations and development of marketing materials. → Contact: roberta (at)

Mia Dragovic

Mia is Energy Efficiency expert, with experience in planning & implementation at local, state & regional levels, especially for the SEE region. She focuses on planning, measurement and verification of energy efficiency, economic appraisal methods for evaluating energy efficiency measures & more. → Contact: mia (at)

Erik Faassen

Erik is associate at IEECP, with over 8-year program management experience building public-private partnerships in support of both entrepreneurship and innovation projects in a European and Global context.→ Contact: erik (at)

Marine Faber Perrio

Marine leads the communication activities of IEECP and the projects IEECP is coordinating / involved in. She has 10 years of experience in communications and sustainability and a MSc in management and communications, from the EM Lyon Business and Management School, France. → Contact: marine (at)

Axelle Gallerand

Axelles is Junior Project and Communication Officer at IEECP and works on projects such as ENPOR, Social Watt, PROSPECT+ and REGILIENCE. → Contact: axelle(at)

Esther Hardi

Esther holds an MSc in Technical Mathematics from Delft University of Technology, was research fellow in Economics of Infrastructures, in Delft. Recently, she completed her Executive MBA with electives as Sustainable Business Strategy and Sustainable Finance at Rotterdam School of Management. → Contact: esther (at)

Jen Heemann

Jen is a Research and Project Assistant at IEECP, supporting the development of EU-funded projects on knowledge exchange and implementation of energy and climate-related policies by European public authorities. Her main focus is climate action planning and implementation at the local and regional levels. → Contact: jen (at)

Zsolt Lengyel

Zsolt is a founding member of IEECP and Chairperson since its establishment in 2015. Zsolt is an economist, a climate action policy veteran and specialist of the corresponding instruments, policies & measures (EU ETS, (I)NDCs, Kyoto Flexible mechanisms, TCFD, Paris Agreement Art 6. etc.) → Contact: zsolt (at)

Indriany Lionggo

Indri works with research and EU-funded projects at IEECP, her main focus is climate adaptation and mitigation, action planning, and resilience. → Contact: indri (at)

Marta Maia

Marta holds a MSc in Communication Science by the University of Porto. She has over 10 years of experience in Marketing & Communication strategy within several industrial and services fields, namely Education, Logistics, Automation, Finance, Technology, and Innovation. → Contact: marta (at)

Vlasios Oikonomou

Dr. Vlasios Oikonomou is an economist, associate senior researcher at IEECP. He finalised his PhD on the interactions of White Certificates energy and climate policy instruments, and published over 40 articles in books and peer reviewed scientific journals in this field. → Contact: vlasis (at)

Mara Oprea

Mara is an Energy Expert that coordinates EU projects centered on increasing energy efficiency in buildings, building climate adaptation capacity for cities, and reducing energy poverty within Europe. Mara has worked in the renewable energy and energy efficiency sectors to facilitate the energy transition. → Contact: mara (at)

Marco Peretto

Marco has an academic background both in Engineering and Business. He has skills in the fields of Policy Analysis and Decision Making, and is a junior policy researcher at IEECP. → Contact: marco (at)

Giulia Pizzini

Giulia is Climate and Energy expert at IEECP, and works on MICAT, REGILIENCE & DEESME. She has over five years experience as project adviser and programme manager. → Contact: giulia (at)

Martijn Rietbergen

Dr. Martijn Rietbergen is Senior Researcher on energy efficiency, project coordinator for international education projects and lecturer on renewable energy at the HU University of Applied Science Utrecht and senior associate to IEECP. → Contact: martijn (at)

Ivana Rogulj

Ivana is Senior Climate and Energy expert, and works on ENSMOV, enefirst, MICAT, StreamSAVE & DEESME. She holds an MSc in Electrical Engineering - Energy Systems, an MSc in Environmental Engineering and a MBA in Energy Economics. → Contact: ivana (at)

Vassilis Stavrakas

Vassilis is associate researcher at IEECP and holds a B.Sc. and M.Sc. degree in Mechanical Engineering from the National Technical University of Athens (NTUA). Since 2013, he is a researcher in EC-funded projects of the Technoeconomics of Energy Systems laboratory of the University of Piraeus. → Contact: vasilis (at)

George Stravodimos

George is associate consultant at IEECP. An Environmental Engineer with a Msc in Energy Production and Management, 14 years of experience in Environmental & Energy Engineering, ranging from production to QA/QC, Energy Efficiency and working as an experienced project developer and manager. → Contact: george(at)

Diana Süsser

Dr. Diana Süsser is Senior Expert in Energy Policies and Transition Aspects at IEECP. She coordinates work within the project JUSTEM and supports work in other EU projects. Her particular concern is to enable a just and sustainable energy transition in Europe. Email: diana (at)

Kathleen Vaillancourt

Kathleen is associate consultant at IEECP. She has 15 years of experience in the development of MARKAL/TIMES optimization models and their applications for supporting decision-making on complex issues such as energy security and deep decarbonisation pathways. → Contact: kathleen (at)