International
- IUCN - International Union for Conservation of Nature
- 21 Solutions
- 350.org
- 3D Associates - Experts in International Law and Policy
- 3keel
- Academy of Gandhian Studies
- Advisory Services in Environmental Management (ASEM)/ GTZ
- Africa Climate Solutions
- Afrik Eveil Ghana
- AFRY
- Agence de la transition écologique (ADEME)
- Akörde
- Application Européenne de Technologies et de Services (AETS)
- Arcadis
- Arctik
- Artelia
- Asian Management Consulting (AMC)
- Asian Productivity Organization (APO)
- Asociación de empresarios del henarios (AEDHE)
- Association of Chambers of Commerce of Veneto Region (UCV)
- Association of Municipalities Polish Network „Energie Cités” (PNEC)
- Association Technique Energie Environnement (ATEE)
- ATECMA
- Austrian Recycling Consulting GmbH (ARECON)
- Avvai Village Welfare Society (AVWS)
- Babes-Bolyai University (BBU) - Center for the Study of Democracy
- Belmont Innovaties & Management bv
- Bio Intelligence Service SAS
- Blätterwald GmbH
- BSD Consulting
- Bulgarian Consulting Centre
- Bureau de recherches géologiques et minières (BRGM)
- BuroHappold
- Callisto
- Cambridge Econometrics
- Carbon Trust
- Carnivora Magna
- Cenia, Czech Environmental Information Agency
- Center for Climate and Security
- Centre de Suivi Ecologique (CSE)
- Centre for Ecology & Hydrology
- Centre for Renewable Energy Sources and Saving (CRES)
- Centre for System Solutions
- Centric Austria International
- Centro Ecuatoriano de Eficiencia de Recursos y Producción más Limpia
- CICOMER – Center for Investment and Commerce
- Climate & Energy Solutions
- Climate Focus
- Climate Outreach
- Climatekos
- Clingendael - the Netherlands Institute of International Relations
- Clingendael | Netherlands institute of International Relations
- Club EMAS Catalonia
- CNRDPA: National Centre for Fisheries and Aquaculture Research and Development
- Comunità Ambiente
- Confederation of Indian Industry (CII)
- Confederation of Indian Industry (CII)
- Confederation of Indian Industry - Center of Excellence for Sustainable Development (CII-CESD)
- COWI
- CPML – El Centro de Producción Mas Limpio de Nicaragua
- CREM BV
- Crisis Management Initiative
- Danish Institute for Human Rights
- DAPHNE - Institute of Applied Ecology
- denkstatt
- Development Alternatives Group
- Development Alternatives Inc.
- Dhaka Chamber of Commerce and Industry (DCCI)
- DHI Group
- E3G - Third Generation Environmentalism
- Economic and Social Commission for Western Asia (ESCWA)
- Egypt National Cleaner Production Centre
- Energy Cities
- Energy Manager Training International (EMT)
- Entwicklungsprogramm der Vereinten Nationen (UNDP)
- Environ Association
- Environment and Security Initiative (ENVSEC)
- Environmental Design Solutions (EDS)
- Environmental Institute, Slowakei
- ENVIROS S.R.O.
- Ernst Basler+Partner
- Ernst&Young
- Ernst&Young Climate Change & Sustainability Services
- Escan
- Espire Consult
- Espire Consult
- Eunomia
- Europäische Akademie Bozen (EURAC)
- Europäische Kommission
- European Cold Storage and Logistics Association (ECSLA)
- European Environmental Bureau
- European Environmental Citizens Organisation for Standardisation (ECOS)
- European Federation of Agencies and Regions for Energy and Environment (FEDARENE)
- European Forum on Nature Conservation and Pastoralism (EFNCP)
- European Peacebuilding Liaison Office
- European Services Network (ESN)
- Faculdade de Ciências da Universidade de Lisboa (FCiências.ID)
- FAKT Consult for Management, Training and Technologies
- Federazione Italiana per l'uso Razionale dell'Energia (FIRE)
- Finnish Meteorological Institute (FMI)
- Fondazione IMC - Centro Marino Internazionale Onlus
- Fraunhofer Institut für System- und Innovationsforschung (ISI)
- Fraunhofer-Institut für System- und Innovationsforschung (ISI)
- Fresh Thoughts Consulting
- Frontier Economics
- Fundación Ideas para la Paz
- Fundación Neotrópica
- Fundación Tres Culturas
- Get2C
- GFA Consulting Group
- GIZ International Services
- Global New Energy (GNE) Finance
- GlobalCad
- GOPA
- Gorakhpur Environmental Action Group (GEAG)
- GreenDependent
- Greenstream
- Grupo GEA
- Gurgaon Industrial Association (GIA)
- GVEP Kenia
- Hainan Development and Reform Commission (DRC)
- Hainan Normal University
- Hera S.p.A.
- iC consulenten
- ICF Consulting India Private Limited
- ICF International Inc.
- ICLEI – Local Governments for Sustainability
- ICPDR International Commission for the Protection of the Danube River
- ifanos
- Indo-German Energy Programme (IGEN)
- INFRAS
- Institute for Essential Services Reform (IESR)
- INSTITUTE FOR EUROPEAN ENERGY AND CLIMATE POLICY (IEECP)
- Institute for European Environmental Policy (IEEP)
- Institute for European Studies, Free University Brussels
- Institute for Law and Environmental Governance (ILEG)
- International Emissions Trading Association
- International Institute for Energy Conservation (IIEC)
- International Institute for Global Environmental Studies (IGES)
- International Institute for Sustainable Development (IISD)
- International Training Centre of the ILO
- International Union for Conservation of Nature (IUCN)
- Internationales Wirtschaftsforum Regenerative Energien (IWR) GmbH
- Istituto di Ecologia Applicata (Institute of Applied Ecology, IEA)
- Johanniter-Unfall-Hilfe e.V.
- Kanagaraj Ganesan
- kanji
- Katholisch Universität Mosambik (UCM)
- Köhler & Klett Rechtsanwälte
- Korinthia Chamber of Commerce and Industry in Greece
- Korinthos Chamber of Commerce
- KWR Watercycle Research Institute
- La Ville de Paris
- Libélula
- Lilongwe University of Agriculture and Natural Resources (LUANAR)
- Living Prospects
- London Economics Europe
- Lyonnaise des Eaux/Suez
- META Innovation Lab
- Milieu - Law & Policy Consulting
- MIO-ECSDE
- MONTEFELTRO SERVICE LTD
- National Cleaner Production Centre
- National Mission for Clean Ganga (NMCG)
- National Technical University of Athens
- National Trust EcoFund (NTEF)
- Navigant
- North-West Croatia Regional Energy Agency (REGEA)
- OER (Energy Cities Romania)
- OÖ Energiesparverband (ESV)
- OpenOil
- Osborne Clarke International Legal Practice
- Österreichische Bundesforste
- Österreichische Energieagentur
- Overseas Development Institute
- OWW Consulting
- POVAS
- PricewaterhouseCoopers (PwC)
- PricewaterhouseCoopers Kenia
- Prof. John Jackson Ewing
- public garden
- Rambøll Group A/S
- Reed Consulting
- Regional Environmental Centre for Central Asia (CAREC)
- RHV Trattnachtal
- Ricardo-AEA
- Rīgas Tehniskā universitāte
- Romalimenta - federatia patronatelor din industria alimentara
- Royal Scientific Society (RSS)
- RSE SpA - Research on Energy System
- RSO S.p.A.
- RWTH Aachen
- Satelligence
- SCOPE-intrasoft
- Scuola Superiore Sant’Anna
- Senture Consulting
- SEVEn
- Shift Project Ltd.
- SinoCarbon
- Socialab México
- SOMO – Stichting Onderzoek Multinationale Ondernemingen
- Spread European Safety Geie
- State Mission for Clean Ganga-Uttar Pradesh (SMCG-UP)
- STELLA Consulting
- Stenum Asia
- STENUM GmbH - Unternehmensberatung und Forschungsgesellschaft für Umweltfragen
- Stockholm International Peace Research Institute
- Stockholm International Peace Research Institute (SIPRI)
- Stockholm International Peace Research Institute (SIPRI)
- Strategos Advisory
- Sustainability Support Services (Europe) AB (SSS)
- Sustainable Energy Africa
- Telespazio
- The Association of Energy Managers of Towns and Regions of the Czech Republic (SEMMO)
- The Center for Climate and Security (CCS)
- The Centre for Energy and Green Growth Research
- The Energy and Resource Institute (TERI)
- The Footprint Initiative for Latin America and the Caribbean (LAC)
- The Hague Centre for Strategic Studies
- The Independent Research Institute of Mongolia (IRIM)
- The Istituto di Ecologia Applicata (Institute of Applied Ecology, IEA)
- Tilburg University
- Toxics Link
- Tractebel Engineering SA
- Trinomics B.V.
- Triodos Facet
- Trioss
- Trucost
- Tunis International Centre for Environmental Technologies
- TÜV Rheinland Vietnam
- Uganda Cleaner Production Centre
- Umweltbundesamt Österreich
- UN-HABITAT Regional Office for Asia and the Pacific
- Universidad de los Andes
- Universidade Federal de Paraíba (UFPE)
- Universidade Federal de Pernambuco (UFPB)
- Università Bocconi
- Università degli Studi di Brescia
- Universität für Bodenkultur Wien (BOKU)
- Universität Salzburg - Zentrum für Geoinformatik (Z_GIS)
- Universität von Balamand
- Universität Zürich
- Université Toulouse
- University of Chemistry and Technology Prague (UCT)
- University of Cyprus (UCY)
- University of Manchester
- University of Marrakech Cadi Ayyad
- University of Queensland
- University of Sussex
- Valor & Tinge A/S
- Volcano
- Volcano A/S
- White & Case LLP
- Willis Towers Watson
- Wirtschaftsuniversität Wien (WU)
- Women’s Entrepreneurship Access Center (WEAC)
- Woodrow Wilson International Center for Scholars
- World Bank Institute
- World Resources Forum
- WRAP
- Zagreb Holding Ltd.
- Zaļā brīvība
- Zentrum für Energie und Umwelt - Züricher Hochschule für Angewandte Wissenschaften (ZHAW)
- Zentrums für Energie und Umwelt - Züricher Hoschule für Angewandte Wissenschaften (ZHAW)
- Zero Waste Maldives
