| Abiodun Abdurrahman | Department of Petroleum Resources | Nigeria | Oil & Gas Subcommittee | | |
| Letitia Abra-Kom Nyaaba | Environmental Protection Agency - Ghana | Ghana | Biogas Subcommittee | | |
| Bahijjahtu Abubakar | Nigeria Federal Ministry of the Environment | Nigeria | Steering Committee | | |
| O. A. Afolabi | Nigeria Federal Ministry of the Environment | Nigeria | Biogas Subcommittee | | |
| O. A. Afolabi | Nigeria Federal Ministry of the Environment | Nigeria | MSW Technical Group | | |
| Gretta Akopova | Gazprom Vniigaz | Russia | Oil & Gas Subcommittee | | |
| Metin Aktan | Ege Trade AŞ | Turkey | Coal Subcommittee | | |
| Faisal Al Jar | Saudi Aramco | Saudi Arabia | Oil & Gas Subcommittee | | |
| Sami Al Mutairi | Saudi Arabia Ministry of Energy | Saudi Arabia | Oil & Gas Subcommittee | | |
| Faisal Al Qurooni | Saudi Arabia Ministry of Energy | Saudi Arabia | Biogas Subcommittee | | |
| Faisal Al Qurooni | Saudi Arabia Ministry of Energy | Saudi Arabia | Oil & Gas Subcommittee | | |
| Faisal Al Qurooni | Saudi Arabia Ministry of Energy | Saudi Arabia | Steering Committee | | Alternate |
| Miguel Almada | Argentina - Ministry of Agriculture, Livestock and Fisheries | Argentina | Agriculture Technical Group | | |
| Miguel Almada | Argentina - Ministry of Agriculture, Livestock and Fisheries | Argentina | Biogas Subcommittee | | |
| Faisal Almusa | Saudi Arabia Ministry of Energy | Saudi Arabia | Steering Committee | | |
| Lodoi Altangerel | Petroleum Authority of Mongolia (PAM) | Mongolia | Oil & Gas Subcommittee | | |
| Tr. Altsukh | Mineral Resources and Petroleum Authority Mongolia (MRPAM) | Mongolia | Coal Subcommittee | | |
| Kingsley Amoako | Ministry of Food and Agriculture | Ghana | Agriculture Technical Group | | |
| Kingsley Amoako | Ministry of Food and Agriculture | Ghana | Biogas Subcommittee | | |
| Jane Amphlett | Environment and Climate Change Canada (ECCC) | Canada | Coal Subcommittee | | |
| Rudy Arifin | Indonesia Ministry of Public Works | Indonesia | Biogas Subcommittee | | |
| Rudy Arifin | Indonesia Ministry of Public Works | Indonesia | Wastewater Technical Group | | |
| Osman A. Arikan | Istanbul Technical University (ITU) | Turkey | Biogas Subcommittee | | |
| Osman A. Arikan | Istanbul Technical University (ITU) | Turkey | MSW Technical Group | | |
| Chitra Ria Ariska | Ministry of Energy and Mineral Resources Republic Indonesia | Indonesia | Oil & Gas Subcommittee | | |
| Kofi Asante | Energy Foundation | Ghana | Oil & Gas Subcommittee | | |
| Eric-Michel Assamoi | Ministry of Salubrity, Environment and Sustainable Development | Cote d'Ivoire | Oil & Gas Subcommittee | | |
| Sabyr Assylbekov | Kazakhstan Ministry of Energy | Kazakhstan | Oil & Gas Subcommittee | | |
| Paz Aviles | U.S. Environmental Protection Agency (EPA) | United States | Oil & Gas Subcommittee | | |
| Mendabayar Badarch | Mongolian Nature and Environment Consortium (MNEC) | Mongolia | Coal Subcommittee | | |
| Dong Baocheng | Rural Energy & Environment Agency | China | Biogas Subcommittee | | |
| Basharat Bashir | Alternative Energy Development Board (AEDB) | Pakistan | Biogas Subcommittee | | |
| Basharat Bashir | Alternative Energy Development Board (AEDB) | Pakistan | Coal Subcommittee | | |
| Basharat Bashir | Alternative Energy Development Board (AEDB) | Pakistan | MSW Technical Group | | |
| Basharat Bashir | Alternative Energy Development Board (AEDB) | Pakistan | Oil & Gas Subcommittee | | |
| Basharat Bashir | Alternative Energy Development Board (AEDB) | Pakistan | Wastewater Technical Group | | |
| Juliana Bempah | Environmental Protection Agency - Ghana | Ghana | Steering Committee | | Alternate |
| Barış Bilgen | Turkey Ministry of Energy and Natural Resources | Turkey | Steering Committee | | Alternate |
| Juliana Boateng | Environmental Applications and Technology Centre | Ghana | Biogas Subcommittee | | |
| Juliana Boateng | Environmental Applications and Technology Centre | Ghana | MSW Technical Group | | |
| Anna BOJANOWICZ - BABLOK | Institute of Environmental Protection | Poland | Agriculture Technical Group | | |
| Anna BOJANOWICZ - BABLOK | Institute of Environmental Protection | Poland | Biogas Subcommittee | | |
| Anna BOJANOWICZ - BABLOK | Institute of Environmental Protection | Poland | MSW Technical Group | | |
| Anna BOJANOWICZ - BABLOK | Institute of Environmental Protection | Poland | Wastewater Technical Group | | |
| Ange Benjamin Brida | Ministry of Salubrity, Environment and Sustainable Development | Cote d'Ivoire | Oil & Gas Subcommittee | | |
| Tomás Carbonell | U.S. Environmental Protection Agency (EPA) | United States | Steering Committee | Chair | |
| Abdullah Çiftçi | Turkish Coal Enterprises | Turkey | Coal Subcommittee | | |
| Abdullah Çiftçi | Turkish Coal Enterprises | Turkey | Steering Committee | | |
| Julius Cudjoe Ahiekpor | Kumasi Technical University | Ghana | Biogas Subcommittee | | |
| Joanna Darska | Poland Ministry of the Environment | Poland | Biogas Subcommittee | | |
| Joanna Darska | Poland Ministry of the Environment | Poland | MSW Technical Group | | |
| Diane de Kerckhove | Environment and Climate Change Canada (ECCC) | Canada | Steering Committee | | |
| Mírian de Oliveira | Ministry of Environment and Climate Change | Brazil | Biogas Subcommittee | | |
| Álife Boernerges de Oliveira Campos | Ministry of Environment and Climate Change | Brazil | Biogas Subcommittee | | |
| Peter Dery | Ghana Ministry of Environment, Science, Technology and Innovation | Ghana | Steering Committee | | |
| Brendan Devlin | European Commission, Directorate General for Energy | European Commission | Agriculture Technical Group | | |
| Brendan Devlin | European Commission, Directorate General for Energy | European Commission | Biogas Subcommittee | | |
| Brendan Devlin | European Commission, Directorate General for Energy | European Commission | MSW Technical Group | | |
| Brendan Devlin | European Commission, Directorate General for Energy | European Commission | Oil & Gas Subcommittee | | |
| James Diamond | Environment and Climate Change Canada (ECCC) | Canada | Oil & Gas Subcommittee | Chair | |
| J.A.T. Dilhani | Sri Lanka Sustainable Energy Authority | Sri Lanka | Biogas Subcommittee | | |
| J.A.T. Dilhani | Sri Lanka Sustainable Energy Authority | Sri Lanka | MSW Technical Group | | |
| Tugba Dincbas | Ministry of Environment, Urbanization and Climate Change | Turkey | Steering Committee | | |
| Djordje Djatkov | University of Novi Sad | Serbia | Agriculture Technical Group | | |
| Djordje Djatkov | University of Novi Sad | Serbia | Biogas Subcommittee | | |
| Djordje Djatkov | University of Novi Sad | Serbia | MSW Technical Group | | |
| Djordje Djatkov | University of Novi Sad | Serbia | Wastewater Technical Group | | |
| Sandra Dokic | Serbian Ministry of Environmental Protection | Serbia | Steering Committee | | |
| Eliza Dyakowska | Gaz-System S.A | Poland | Oil & Gas Subcommittee | | |
| Amin Dzamla-Gbo | Cote d'Ivoire Ministry of Agriculture and Rural Development | Cote d'Ivoire | Biogas Subcommittee | | |
| Edu Effiom | Cross River State Council on Climate Change | Nigeria | Biogas Subcommittee | | |
| Ochir Enkhbayar | Petroleum Authority of Mongolia (PAM) | Mongolia | Oil & Gas Subcommittee | | |
| Roberto Farina | Italian National Agency for New Technologies, Energy & Sustainable Economic Dev. | Italy | Agriculture Technical Group | | |
| Roberto Farina | Italian National Agency for New Technologies, Energy & Sustainable Economic Dev. | Italy | Biogas Subcommittee | | |
| Roberto Farina | Italian National Agency for New Technologies, Energy & Sustainable Economic Dev. | Italy | Wastewater Technical Group | | |
| Godfred Fiifi Boadi | Ministry of Sanitation and Water Resources | Ghana | Biogas Subcommittee | Chair | |
| Melih Firat Ayaz | Ministry of Environment, Urbanization and Climate Change | Turkey | Steering Committee | | Alternate |
| Abdullah Fisne | Istanbul Technical University (ITU) | Turkey | Coal Subcommittee | | |
| Pamela Franklin | U.S. Environmental Protection Agency (EPA) | United States | Steering Committee | | Alternate |
| Kemal Grbović | Ministry of Ecology, Spatial Planning, and Urbanism | Montenegro | Biogas Subcommittee | | |
| Federico Grullon | National Council for Climate Change and Clean Development Mechanism (CDM) | Dominican Republic | Agriculture Technical Group | | |
| Federico Grullon | National Council for Climate Change and Clean Development Mechanism (CDM) | Dominican Republic | Biogas Subcommittee | | |
| Federico Grullon | National Council for Climate Change and Clean Development Mechanism (CDM) | Dominican Republic | MSW Technical Group | | |
| Federico Grullon | National Council for Climate Change and Clean Development Mechanism (CDM) | Dominican Republic | Wastewater Technical Group | Chair | |
| Claudia Guerrero | Ministry of Environment of Chile | Chile | Agriculture Technical Group | | |
| Claudia Guerrero | Ministry of Environment of Chile | Chile | Biogas Subcommittee | | |
| Hua Guo | The Commonwealth Scientific and Industrial Research Organization (CSIRO) | Australia | Coal Subcommittee | | |
| Jenia Gutman | Israel Ministry of Environmental Protection | Israel | Biogas Subcommittee | | |
| Xu Haiyun | China Urban Construction Design and Research Institute | China | Biogas Subcommittee | | |
| Matt Hamilton | Environment and Climate Change Canada (ECCC) | Canada | Agriculture Technical Group | Chair | |
| Matt Hamilton | Environment and Climate Change Canada (ECCC) | Canada | Biogas Subcommittee | Chair | |
| Matt Hamilton | Environment and Climate Change Canada (ECCC) | Canada | MSW Technical Group | Chair | |
| Matt Hamilton | Environment and Climate Change Canada (ECCC) | Canada | Wastewater Technical Group | Chair | |
| Agustin Hermawan | Ministry of Energy and Mineral Resources Republic Indonesia | Indonesia | Oil & Gas Subcommittee | | |
| Lee Hoh Yeon | Republic of Korea Ministry of Trade, Industry & Energy (MOTIE) | Republic of Korea | Oil & Gas Subcommittee | | |
| Jairo Homez | Ministry of the Environment and Sustainable Development of Colombia | Colombia | Agriculture Technical Group | | |
| Jairo Homez | Ministry of the Environment and Sustainable Development of Colombia | Colombia | Biogas Subcommittee | | |
| Andrés Intriago | Municipality of Guayaquil | Ecuador | Biogas Subcommittee | | |
| Andrés Intriago | Municipality of Guayaquil | Ecuador | MSW Technical Group | | |
| Sayat Isatov | Kazakhstan Ministry of Energy | Kazakhstan | Coal Subcommittee | | |
| Masumi Ito | Japan Ministry of Economy, Trade and Industry | Japan | Oil & Gas Subcommittee | | |
| Nathalie Jacobsen | Danish Energy Agency | Denmark | Agriculture Technical Group | | |
| Nathalie Jacobsen | Danish Energy Agency | Denmark | Biogas Subcommittee | | |
| Dinesh Dayanand Jagdale | India Ministry of New and Renewable Energy | India | Biogas Subcommittee | | |
| Asmau Jibril | Nigeria Federal Ministry of the Environment | Nigeria | Oil & Gas Subcommittee | | |
| Igor Jovanović | Ministry of Ecology, Spatial Planning, and Urbanism | Montenegro | Biogas Subcommittee | | |
| C. Ozgen Karacan | U.S. Geological Survey | United States | Coal Subcommittee | | |
| Ana Karanfilova Maznevska | Ministry of Environment and Physical Planning | Republic of North Macedonia | Biogas Subcommittee | | |
| Olatokunbo Karimu | Department of Petroleum Resources | Nigeria | Oil & Gas Subcommittee | | |
| Erkan Karisli | ASKİ Genel Müdürlüğü | Turkey | Biogas Subcommittee | | |
| Erkan Karisli | ASKİ Genel Müdürlüğü | Turkey | Wastewater Technical Group | | |
| Jennifer Kerr | Environment and Climate Change Canada (ECCC) | Canada | Steering Committee | | |
| Muhammad Abdul Kholiq | National Research and Innovation Agency (BRIN) | Indonesia | Steering Committee | | |
| Purevdorj Khurelkhuu | Ministry of Mining and Energy of Mongolia | Mongolia | Coal Subcommittee | | |
| Purevdorj Khurelkhuu | Ministry of Mining and Energy of Mongolia | Mongolia | Oil & Gas Subcommittee | | |
| Shigeyuki Kimura | Japan Ministry of Economy, Trade and Industry | Japan | Coal Subcommittee | | |
| Ruslan Koblanuly | Kazakhstan Ministry of Energy | Kazakhstan | Coal Subcommittee | | |
| Tiangoua Kone | Ministry of Salubrity, Environment and Sustainable Development | Cote d'Ivoire | Biogas Subcommittee | | |
| Paulina KOSTRZ - SIKORA | THE POLISH GEOLOGICAL INSTITUTE - NATIONAL RESEARCH INSTITUTE | Poland | Agriculture Technical Group | | |
| Paulina KOSTRZ - SIKORA | THE POLISH GEOLOGICAL INSTITUTE - NATIONAL RESEARCH INSTITUTE | Poland | Biogas Subcommittee | | |
| Paulina KOSTRZ - SIKORA | THE POLISH GEOLOGICAL INSTITUTE - NATIONAL RESEARCH INSTITUTE | Poland | MSW Technical Group | | |
| Paulina KOSTRZ - SIKORA | THE POLISH GEOLOGICAL INSTITUTE - NATIONAL RESEARCH INSTITUTE | Poland | Wastewater Technical Group | | |
| Larry Kotoe | Environmental Protection Agency - Ghana | Ghana | Oil & Gas Subcommittee | | |
| Armand Kouhon | PETROCI Holdings | Cote d'Ivoire | Oil & Gas Subcommittee | | |
| Ajay Kumar | Central Mine Planning & Design Institute Ltd (CMPDI) | India | Steering Committee | | |
| Manoj Kumar | Central Mine Planning & Design Institute Ltd (CMPDI) | India | Coal Subcommittee | Chair | |
| Manoj Kumar | Central Mine Planning & Design Institute Ltd (CMPDI) | India | Steering Committee | | |
| Kaarle Kupiainen | Finland Ministry of the Environment | Finland | Steering Committee | | |
| Sandra Lazic | Serbian Ministry of Environmental Protection | Serbia | Biogas Subcommittee | | |
| Yong-hwan Lee | Ministry of Knowledge Economy | Republic of Korea | Oil & Gas Subcommittee | | |
| Sharyn Lie | U.S. Environmental Protection Agency (EPA) | United States | Steering Committee | | |
| Bakhyt Makhanov | Kazakhstan Ministry of Energy | Kazakhstan | Oil & Gas Subcommittee | | |
| Yuhei Maruyama | Japan Ministry of Economy, Trade and Industry | Japan | Oil & Gas Subcommittee | | |
| Andrew McFarlan | Department of Natural Resources Canada | Canada | Biogas Subcommittee | | |
| Sidney Medeiros | Brazilian Ministry of Agriculture and Livestock | Brazil | Biogas Subcommittee | | |
| Dragana Mehandžić | Serbian Ministry of Environmental Protection | Serbia | Biogas Subcommittee | | |
| Dragana Mehandžić | Serbian Ministry of Environmental Protection | Serbia | Steering Committee | | |
| Andrew Meluch | U.S. Environmental Protection Agency (EPA) | United States | Oil & Gas Subcommittee | | |
| Gyimah Mohammed | Ghana Ministry of Environment, Science, Technology and Innovation | Ghana | Biogas Subcommittee | | |
| Mutala Mohammed | Institute for Sustainable Energy and Environmental Solutions | Ghana | Biogas Subcommittee | | |
| Giselle Moritán | Argentina Secretary of Energy | Argentina | Oil & Gas Subcommittee | | |
| Joanna Niemczewska | Oil and Gas Institute (INIG) of Poland | Poland | Oil & Gas Subcommittee | | |
| Ilan Nissim | Israel Ministry of Energy | Israel | Oil & Gas Subcommittee | | |
| Hatice Öncü | Turkish Coal Enterprises | Turkey | Coal Subcommittee | | |
| Emre Özgür | Turkey Ministry of Energy and Natural Resources | Turkey | Oil & Gas Subcommittee | | |
| Chiranjib Patra | Central Mine Planning & Design Institute Ltd (CMPDI) | India | Steering Committee | | Alternate |
| Justin Pryor | U.S. Environmental Protection Agency (EPA) | United States | Oil & Gas Subcommittee | | |
| Berioska Quispe | Peru Ministry of the Environment | Peru | Agriculture Technical Group | | |
| Berioska Quispe | Peru Ministry of the Environment | Peru | Biogas Subcommittee | | |
| Rila Albani Rakotomanana | Ministry of the Environment and Sustainable Development | Madagascar | Biogas Subcommittee | | |
| Alberto Rocha Neto | Ministry of Environment and Climate Change | Brazil | Biogas Subcommittee | | |
| Volha Roshchanka | U.S. Environmental Protection Agency (EPA) | United States | Coal Subcommittee | Chair | |
| Kobenan Guilaume Sahode | Ministry of Salubrity, Environment and Sustainable Development | Cote d'Ivoire | Biogas Subcommittee | | |
| Mohammed Sani | Nigeria Federal Ministry of the Environment | Nigeria | Steering Committee | | |
| Kuanysh Sarsekeyev | Kazakhstan Ministry of Energy | Kazakhstan | Oil & Gas Subcommittee | | |
| Anja Schwetje | Germany Federal Environment Agency (UBA) | Germany | Biogas Subcommittee | | |
| Anja Schwetje | Germany Federal Environment Agency (UBA) | Germany | MSW Technical Group | | |
| Huang Shengchu | China Coal Strategies Research Center (CCSR) | China | Coal Subcommittee | | |
| Jacek Skiba | Central Mining Institute of Katowice, Poland | Poland | Coal Subcommittee | | |
| Ujang Solihin Sidik | Ministry of Environment of Indonesia | Indonesia | Biogas Subcommittee | | |
| Ujang Solihin Sidik | Ministry of Environment of Indonesia | Indonesia | MSW Technical Group | | |
| Putu Suardana | Ministry of Energy and Mineral Resources Republic Indonesia | Indonesia | Oil & Gas Subcommittee | | |
| Demchig Tserenkhand | Mineral Resources and Petroleum Authority Mongolia (MRPAM) | Mongolia | Coal Subcommittee | | |
| Metin Turan | Yeditepe University | Turkey | Agriculture Technical Group | | |
| Metin Turan | Yeditepe University | Turkey | Biogas Subcommittee | | |
| Daniel Tutu Benefoh | Environmental Protection Agency - Ghana | Ghana | Biogas Subcommittee | | |
| Daniel Tutu Benefoh | Environmental Protection Agency - Ghana | Ghana | Steering Committee | Chair | |
| Daniel Tutu Benefoh | Environmental Protection Agency - Ghana | Ghana | Wastewater Technical Group | | |
| Leonid Tverdokhlebov | CCD Rosnedra | Russia | Oil & Gas Subcommittee | | |
| Roberto Urquizo | Government of the Province of Guayas | Ecuador | Agriculture Technical Group | | |
| Roberto Urquizo | Government of the Province of Guayas | Ecuador | Biogas Subcommittee | | |
| Birgitta Vainio-Mattila | Finland Ministry of Agriculture and Forestry | Finland | Agriculture Technical Group | | |
| Birgitta Vainio-Mattila | Finland Ministry of Agriculture and Forestry | Finland | Biogas Subcommittee | | |
| Andrew Vanderzaag | Agriculture and Agri-Food Canada | Canada | Agriculture Technical Group | | |
| Andrew Vanderzaag | Agriculture and Agri-Food Canada | Canada | Biogas Subcommittee | | |
| Andrew Vanderzaag | Agriculture and Agri-Food Canada | Canada | MSW Technical Group | | |
| Andrew Vanderzaag | Agriculture and Agri-Food Canada | Canada | Wastewater Technical Group | | |
| Goran Vujic | University of Novi Sad | Serbia | Agriculture Technical Group | | |
| Goran Vujic | University of Novi Sad | Serbia | Biogas Subcommittee | | |
| Goran Vujic | University of Novi Sad | Serbia | MSW Technical Group | | |
| Goran Vujic | University of Novi Sad | Serbia | Wastewater Technical Group | | |
| Michael Weaver | U.S. Agency for International Development (USAID) | United States | Steering Committee | | |
| Maria Wellisch | Agriculture and Agri-Food Canada | Canada | Biogas Subcommittee | | |
| Liu Wenge | China Coal Information Institute (CCII) | China | Coal Subcommittee | Chair | |
| Liu Wenge | China Coal Information Institute (CCII) | China | Steering Committee | | Alternate |
| Ravi Shankar Yadav | Central Mine Planning & Design Institute Ltd (CMPDI) | India | Steering Committee | | Alternate |
| Liu Yang | China Ministry of Ecology and Environment | China | Steering Committee | | |
| Igor Yashchenko | Ministry of Energy and Coal Industry of Ukraine | Ukraine | Coal Subcommittee | | |