The PDO is to lay the analytical groundwork to enable the Municipal Government of the City of Rio de Janeiro (Rio Prefeitura) to develop an ambitious, cross-sectoral, low carbon / climate change mitigation program over the next two to four years - with longer term goals and activities even beyond that timeframe. The PDO is being achieved through the development of an ISO-certified business model for low carbon development at city level - with Rio being the first city worldwide to apply the model.