The greenwerk. offers climate policy and sustainable energy policy related advice to clients in both developing and developed countries.

ESSA is an international environmental consulting firm with over 37 years of experience in resolving complex natural resource and environmental management problems.

Practical Action Consulting (PAC) is the consulting arm of Practical Action, an international non-governmental organisation that uses technology to challenge poverty in developing countries.

Alterra is part of Stichting DLO. It is a private sector, research and academic not for profit institution.

CONSULAQUA Hamburg is a 100% subsidiary of HAMBURG WASSER, Northern Germany's largest public water supply and wastewater disposal company, and provides advanced expertise and long term experience for all kinds of capacity development challenges, consultancy and engineering tasks in the water sect

International Union for Conservation of Nature and Natural Resources IUCN's mission is to influence, encourage and assist societies throughout the world to conserve the integrity and diversity of nature and to ensure that any use of natural resources is equitable and ecologically sustainable.&nbs

Pöyry Austria GmbH, a member of the global Pöyry Group, is a consulting and engineering company with deep expertise with extensive local knowledge to deliver sustainable project investments.

Okapi Environmental Consulting Incorporated (OECI) is a private sector organization established in 2011 with the mission to provide quality technical and policy advice on sustainable development.

The Overseas Environmental Cooperation Center, Japan (OECC) is a non-governmental organization supported by the Ministry of the Environment of Japan, promoting international cooperation activities related to climate change, global environment conservation, research, capacity building, and support