Meet Our Team

Andrei Marcu Founder & Executive Director
Andrei Marcu has vast experience in managing policy-focused organisations, creating partnerships, managing stakeholder relations and fundraising. His focus has been on sustainable development, climate change and energy. In different capacities, he has been engaged in multilateral negotiating processes and subsequent implementation action, both at the global and sectorial level. He has acted as negotiator for developing countries, coordinator for the G-77 and China, and as representative of the international business community.  He pioneered cooperation between the UN system and multinational corporations when serving as Manager of Private Sector Cooperation in the United Nations Development Programme. 
During his career, Mr. Marcu has performed at the highest managerial level, both in business organisations and in non-profit organisations. This includes: Sr. Vice President and Head of Regulatory and Policy Affairs at Mercuria Energy Group; CEO of Bluenext, a Paris based exchange; Managing Director for Climate & Energy at the World Business Council for Sustainable Development (WBCSD)  in charge of Energy and Climate and as Vice Chair of the Energy and Environment Commission of the International Chamber of Commerce in Paris; Senior Associate to the International Centre for Trade and Sustainable Development (ICTSD), Senior Advisor on Climate Change and Emissions Trading at Bennett Jones LLP in Canada; Founder, President and CEO of the International Emissions Trading Association (IETA), a business association with offices in Geneva, Brussels, Washington and Toronto. Mr Marcu founded the organisation and made it into one of the leading global business NGOs and the voice of business in its field. Mr. Marcu initiated his career in Ontario Hydro, where among other responsibilities, he served as Chief of Staff for the Chairman & CEO.
Phone: +32 479 66 80 61
Aaron Cosbey Senior Associate
Aaron Cosbey is a development economist with over 25 years’ experience in the law and economics of sustainable development, particularly in the areas of trade and climate change, with current work centering on climate change, green industrial policy, and the mining sector.
Next to being a Senior Associate at ERCST, he is a Senior Associate with the International Institute for Sustainable Development, an Advisor to the Inter-Governmental Forum on Mining, Minerals, Metals and Sustainable Development (IGF), a member of the ICTSD E15 Expert Group on Clean Energy and the Multilateral Trading System, and a member of the Green Growth Knowledge Platform Research Committee on Trade and Competitiveness. He serves on Global Affairs Canada’s Environmental Assessment Advisory Group. He has consulted to a wide variety of governments and institutions, including the Canadian Department of Foreign Affairs and International Trade (now Global Affairs Canada), Centre for European Policy Studies, CIDA, Commonwealth Secretariat, Environment Canada, European University Institute, IADB, Canada’s National Round Table on Environment and Economy, North American CEC, OECD, UNCTAD, UNDP, UNEP, UNFCCC and the World Bank.
Aaron was project lead on IISD’s Development Dividend Project, which assessed the CDM’s ability to deliver sustainable development benefits to host countries. He was a project lead partner for CEPS’ Climate for Sustainable Growth Project, which assessed the economic, environmental and social impacts of a series of climate-related policies in different case studies. He served as Special Advisor to UNCTAD on Climate, Green Economy and Economic Diversification. He was the leader of a global multi-stakeholder multi-year Swedish-funded effort to elaborate best practice and pitfalls in the area of border carbon adjustment. He has been contracted to advise a number of governments on sustainable investment and trade policies, including Sri Lanka, Namibia, Democratic Republic of Congo and Burkina Faso.
Olivier Imbault Senior Fellow
Before joining ERCST as Senior Fellow, Olivier Imbault chaired the BusinessEurope Working Group Energy & Climate for more than six years, since 2015. Olivier has developed a broad experience in EU regulations and leadership role in the European debates on energy transition, climate change and sustainable development. He brought with him a more than forty years’ experience in the Industry and energy sectors after a long career in Air Liquide, where he was successively CEO of the Italian subsidiaries, Vice President of the Mediterranean and African Zone and Vice President Europe Energy and Industry affairs. Olivier holds an engineering degree from Ecole Centrale Lyon and an MBA from INSEAD Young Manager Program. In Air Liquide Italy, Olivier has been especially active with his team in the development of energy and hydrogen solutions for industry based on highly efficient cogenerations, high environmental processes and new technologies such as small electrolysers. In the same period, Olivier has acted as representative of the Chemical Industry in the development of the Italian energy market as President of the Italian Chemical Industry Energy Committee and Member of Confindustria. At the European level, Olivier has been fully involved in the development of the new European Carbon market, as Chairman of the European Industrial Gases Regulatory Council (EIGA), and implementation of the EU ETS in Air Liquide with the creation of a new entity focused on energy and environmental commodities management aiming, among others, at supporting the decarbonization of the Air Liquide activities. In recent years, in his role of member of the MEDEF Energy and Climate Change Committee and Chairman of the BusinessEurope Working Group Energy & Climate, Olivier has been instrumental in all the discussions on Climate Change and Energy Transition between the Commission and the European Industry.
Jean-Yves Caneill Senior Advisor
Jean-Yves Caneill joined ERCST in 2018 after after a thirty-year long and distinguished career in Electricité de France (EDF), where he was responsible for climate change policy. Jean-Yves holds an engineering degree from ENSTA and completed his PHD at University Paris VI in 1979, after which he joined EDF.
In EDF, Jean-Yves launched the first project at EDF devoted to the climate issue in 1990. In 1995, he started to get involved in the international process on tackling climate change and became strongly involved in the EU developments related to the design of the Emission Trading directive, focussing on the economical consequences of the carbon constraint for the management of power generation units.
Later, je moved to the corporate level of EDF Group ,where he became Head of Climate Policy. He has been strongly involved in the European and international debate on climate issues, attending the climate negotiation conferences under the Eurelectric banner.
In recent years, he has been strongly involved in dialogues with EGTT, TNA, TEC and CTCN  process (UNFCCC) through WBCSD and ICC. He was member of the CTCN Advisory Board for one year, representing the private sector. He is also following the GCF issue as an observer. He is also involved in different collaborations with MIT, CEPS, and IDDRI. 
Tomasz Chruszczow Senior Fellow

Tomasz Chruszczow is an experienced High Level Official and diplomat. He has been active in the field of environmental protection for more than 30 years, with a special focus on climate change, industrial emissions and waste management. He is also an expert in international environmental policies and a Member of the Polish National Committee for Environmental Impact Assessment.

Tomasz, served in Polish and European industry organisations as a representative of Polish glass manufacturers, including as the Vice President of CPIV – Standing Committee of European Glass Industries. Other experiences include: Delegate to the Consultative Commission on Industrial Change (CCMI) in the European Economic and Social Committee, implementation of the IPPC and EU ETS directives in Poland, Chair of the Technical Working Groups in Polish IPPC Centre and Poland’s delegate to the European IPPC Bureau.

In the international realm, Tomasz has been the EU lead climate negotiator and Head of Polish delegation at UN Climate Conferences, Chair of the EU WPIEI Climate Change during Polish EU Council Presidency, High-Level Climate Champion and chair of UNFCCC global negotiations, Chair of the UNFCCC Subsidiary Body for Implementation – SBI as well as the Subsidiary Body for Scientific and Technological Advice – SBSTA, Member of the UN Adaptation Committee 2012-2015, negotiating on behalf of the EU final provisions of the Paris Agreement on forestry during Paris COP21. Tomasz graduated from the Technical University of Warsaw.

Natalie Kushko Senior Fellow

Natalie Kushko is a senior sustainable low emission economic development, climate change, and international carbon markets expert with over 20 years of experience in inter-governmental UNFCCC negotiation, extensive on-ground experience on UNFCCC flexible mechanisms, climate change policy-making and implementation on international and national levels, as well as regional level in emerging markets of Eurasia region. Furthermore, she has over 10 years of extensive professional experience working with international development cooperation projects (EBRD, GIZ, UNDP, USAID, among others). Ms. Kushko currently is a Team Leader of national and international experts and firms supporting the GoU on second Ukrainian NDC development under Paris Agreement EBRD, also providing international legal expertise and, planning and supervising transparent and inclusive stakeholders’ consultation process for over two years on second NDC development process. She served as Team Lead of UNDP project providing support to Ukrainian Parliament on sustainable energy and environment issues.

Earlier, Ms. Kushko managed Ukrainian 2050 Low Emission Development Strategy development process under Paris Agreement, including transparent and inclusive stakeholders consultation process and drafting the Strategy policy document as a Task Leader on LEDS under USAID Project for over 36 months on developing the Strategy as the very first transparent and inclusive stakeholders’ consultation process introducing best international practices for such process; she also provided support to the GoU on national climate change and low emission development policy-making;  she was a management team member of multi-million project and managed national and international sub-contractors. She managed the process of national climate change legislation development and adoption process by the GoU, namely – State Climate Change Policy Concept till 2030 and its Action Plan. She also served as an Advisor to the Minister of Ecology and Natural Resources of Ukraine on climate change issues, including UNFCCC negotiation process, national climate change and low emission policy making and climate change cross-sectoral inter-ministerial coordination. Ms. Kushko serves as member/alternative member of UNFCCC CDM Executive Board since 2012.

Previously, she served as Advisor on climate change and sustainable development to various GoU officials, local authorities, including Head of State Environmental Investment Agency, Lviv City Mayor and Parliament Members. Before that, Ms. Kushko has been working for the world leading carbon aggregator Ecosecurities Group Plc as Ukraine Country Coordinator/Origination Team dealing with JI projects identification, development and implementation support in Eurasia region. Ms. Kushko also served as Eurasia Coordination sustainable development program’s Executive Director of Ukraine’s National Accounting NGO as a part of USAID project on Sustainable Business Development. She worked as Senior Agribusiness Expert with the EU TACIS project developing first agribusiness supply chains in Ukraine and managed private business entities

Dariusz Dybka Senior Manager

Dariusz Dybka has been working in Brussels since 2011. Before joining the ERCST as Senior Manager, he represented the Polish electricity sector. Previously served a term in the Permanent Representation to the EU as a climate attaché where he worked on emissions trading, air quality, Fgases, and climate adaptation and mitigation. He was an Alternate Member of the Kyoto Protocol Compliance Committee from 2012-2016, and is a legal expert of the UNFCCC process. He worked for the Ministry of the Environment in Warsaw and with the Polish COP Presidency in 2008. Prior to this, he finished a law faculty and fellowship in Washington DC. At ERCST he is focusing on the European Green Deal, Sustainable Just Transition, global emissions footprint, the future of carbon leakage protection in the EU ETS and the UNFCCC negotiations, including on Article 6 and response measures. Email: Phone: +32 467 81 42 73

Alexandra Maratou Senior Policy Analyst 

Alexandra joined ERCST in 2020 as a Senior Policy Analyst. She focuses on economic and climate change policies at the European and international levels, including carbon pricing and border carbon adjustments.

She has 12 years of professional experience in policy research and analysis, with a focus on energy, climate and the environment. Prior to ERCST, she worked for consultancy COWI, where she conducted studies on behalf of the European Commission and other public sector clients. She has extensive experience in the area of fluorinated greenhouse gas policies and alternatives, both at the EU-level and in the context of international UN negotiations under the Montreal Protocol. In the outset of her career, she worked as a research assistant at Cambridge University’s Electricity Policy Research Group, where she inter alia conducted research on low-carbon electricity generation technologies, and innovation.

Alexandra holds an MSc degree in Environmental and Resource Economics from University College London, as well as a BA degree in Economics from the Athens University of Economics and Business.

Phone: +32 468 203 390

Antonio Fernandez Policy Analyst

Antonio joined ERCST in early 2021 as a Policy Analyst. He focuses on energy and climate policy developments with a particular focus on the Hydrogen economy and the New Green Deal.

Previous to joining ERCST Antonio gained valuable professional experience in the fields of energy and environment, international trade and banking in 4 different EU countries, working for renowned private and public organisations such as the British Parliament, the Spanish Embassy in Berlin, Santander Bank or Iberdrola.

Antonio is a fully qualified lawyer that holds a M.B.A. from ICEX-CECO, with focus on international trade, a LL.M. in European Business, Competition and Regulatory Law from FU Berlin, as well as a Master in Professional Development from University of Alcalá in Madrid.

Phone: +32 468 203 275

Stefano Cabras Policy Analyst

Stefano joined ERCST in March 2021 as a policy analyst. His work focuses on the EU ETS and Carbon Markets related issues. Before joining ERCST, he worked as a policy analyst for ENEL Green Power North America and for the EU Commission at DG Clima, in the unit responsible for ETS policy development.

Stefano holds a bachelor’s degree in economics from the University of Rome Tor Vergata, a MA in EU and International Studies from the University of Trento and a joint MA from the Fletcher School in Boston and the College of Europe, focusing on EU and International Clean Energy and Climate Policies.

Phone: +32 470 11 38 35

Marina Monciatti Researcher

Marina joined ERCST in 2020 as a Researcher. She focuses on climate change policies both at the EU and international level, specifically on border carbon adjustments and Scope 1, 2 & 3 emissions.

Prior to ERCST, she completed her internships at the United Nations Economic Commission for Latin America in Santiago de Chile, at GIZ for the cooperation programme EUROCLIMA+ in Brussels and as a researcher at a chemical recycling company in London.

Marina holds a Bachelor’s degree in Business and Finance from Hult and a Master of Climate Change, Management and Finance from Imperial College London.

Phone: +32 486 62 99 29

Thomas Mertens Researcher

Thomas joined ERCST in October 2020. His work is focused on international climate policy, carbon markets and international negotiations related to Article 6 of the Paris Agreement. At European level, he works on topics related to the EU ETS.

Before joining ERCST, he worked at UN Environment in Pretoria, South Africa and at the Economics and Management department of consultancy firm COWI in Brussels. He also worked as a volunteer for several environmental civil society organisations.

Thomas holds a MSc in Applied Economics from the University of Antwerp and a MSc in International Politics from the School of Oriental and African Studies (SOAS), University of London.

Phone: +32 479 42 13 42

Pietro Cesaro Researcher

Pietro joined ERCST in February 2021 as a Researcher. His work focuses on sustainable finance policy both in the context of the European Green Deal and at international level.

Before joining ERCST, he worked as a policy assistant to the Principal Adviser on Green Finance at DG Environment of the EU Commission in Brussels. Prior to this experience, he completed his internship at the UNFCCC in Bonn working on carbon pricing initiatives.

In 2018, Pietro co-founded “Duegradi”, an Italian Magazine dedicated to the topic of climate change and environmental policies.

Pietro holds a MSc in Economics with a major in Economic Policy from the University of Lugano, with exchanges at the KU Leuven and the London School of Economics and Political Science.

Phone: +39 349 5416186

Sachi Vohra Researcher

Ms. Sachi Vohra joined ERCST in October 2021 as a consultant based out of India. Her work focuses on climate policy, carbon pricing, market-based mechanism, national and international climate policy discourse.  Prior to ERCST, she worked as a Research Associate in The Energy and Resources Institute (TERI) in New Delhi. She was also a volunteer in a grassroot level organisation to promote ground level implementation of clean energy transition in the Himalayan regions.

Sachi holds a MSc in Climate Science and Policy from TERI University and a bachelor’s degree in Geography from University of Delhi.


Dora Klein Administrative Assistant

Dora Klein joined ERCST in 2021 as Administrative Assistant to provide general support the ERCST team with projects, events and running the growing operation.

Prior to joining ERCST Dora spent most of her career in the private sector supporting Recruitment and Marketing projects and teams. She gained experience across several industries and various countries in Europe.

Dora holds an MA in English Linguistics from the University of Debrecen and a BSc in Economics from the Budapest Business College.

Phone: +32 470960929