Nrg4SD Network was formed by the "regional governments" -understood as the largest and first level of political subdivision within an individual state represented at the UN but which is above de municipal level- that attended the Johannesburg World Summit on Sustainable Development, to share information and experience about sustainable development policy-making at the regional level of governance. They agreed the `Gauteng Declaration' which is the founding document of the Network. Nrg4SD promotes understanding, collaboration and partnerships in sustainable development and seeks greater international recognition of the importance of the contribution which regions make to sustainable development. Nrg4SD aims to be a voice for, and to represent, regional governments at the global level, promoting sustainable development at regional level around the world. Nrg4SD has members from the five United Nations (UN) regions of the globe and focal points in each of them.

Governments:
Government of Spain - Government of the Basque Country
Government of Argentina - Government of Chaco
Government of Argentina - Government of Santa Fe
Government of Australia - Government of South Australia
Government of Australia - Government of Victoria
Government of Australia - Government of Western Australia
Government of Australia - Government of the Australian Capital Territory
Government of Belgium - Government of Wallonia
Government of Belgium - Government of Flanders
Government of Brazil - Government of Goias
Government of Brazil - Government of Sao Paulo
Government of France - Government of Brittany
Government of France - Government of Poitou-Charentes
Government of France - Government of Reunion
Government of Germany - Government of North Rhine Westphalia
Government of Indonesia - Government of Riau
Government of Indonesia - Government of North Sumatera
Government of Indonesia - Government of West Java
Government of Italy - Government of Tuscany
Government of Lithuania - Government of Kaunas
Government of Peru - Government of Callao
Government of Portugal - Government of Azores
Government of Romania - Government of Tulcea
Government of South Africa - Government of Western Cape
Government of Spain - Government of Andalusia
Government of Spain - Government of Catalonia
Government of Spain - Government of Valencia
Government of United Kingdom of Great Britain and Northern Ireland - Government of Wales

Other intergovernmental organizations:
ABEMA (Brazilian Association of State Environmental Entities) (Brazil)
Conference des Regions Peripherique Maritimes (CRPM) (European Community)
The Northern Forum (United States of America)

Other:
Nrg4SD Secretariat (Spain)