The City of Reykjavik is the capital of Iceland and the northenmost capital city in the world. The Reykjavik Capital Area has just under 200 000 inhabitants, about 60% of the total Icelandic population of 300 000. 

ICLEI-Local Governments for Sustainability is an international association of local governments and associations of national and regional local governments that have made a commitment to sustainable development. More than 1000 cities, towns, counties, and their associations worldwide comprise ICLEI's growing membership.

The United Nations Environmental Programme is the UN voice for the environment. Within its activities, the UNEP is a main actor for advocacy, education and facilitator, promoting the wise use and sustainable development of the global environment. To ensure its global effectiveness UNEP supports six regional offices, plus a growing network of centres of excellence as well as promoting and hosting environmental conventions and conferences.

The Council of European Municipalities and Regions (CEMR) works to promote a united Europe that is based on local and regional self-government and democracy. To achieve this goal it endeavours to shape the future of Europe by enhancing local and regional contribution to influence European law and policy, to exchange experience at local and regional level and to cooperate with partners in other parts of the world.

The Regional Environmental Center (REC) for Central and Eastern Europe is an international organisation with the objective of assisting in the solution of environmental problems in Central and Eastern Europe. The REC fulfils this mission by promoting cooperation of environmental stakeholders, supporting free exchange of information and promoting public participation in environmental decision making.

The International Green Purchasing Network (IGPN) is an organisation which promotes Green Purchasing around the globe by coordinating those who take the initiative in implementing Green Purchasing toward sustainable consumption and production. The network consists of international organisations, local authorities and NGOs.

The Responsible Purchasing Network (RPN) is a US based national network of procurement-related professionals dedicated to socially responsible and environmentally sustainable purchasing, officially founded in 2005. With a vision of promotion of best practices, efficiency and purchasing it aims to maximise environmental stewardship, protect human health, and support local and global sustainability

ITC International Labour Organisation is committed to assist countries in their social and economic development, so to foster certain world labour standards. The ITC is currently running more than 450 programmes and projects for a total of around 11,000 people from over 180 countries each year.