The Montreal Climate Partnership is an independent initiative that brings together some one hundred economic, community, philanthropic and institutional organisations recognised for their level of commitment to climate change mitigation and their capacity to influence their peers. The project is ambitious: to mobilise key players in the Montreal community to help reduce GHG emissions by 55% by 2030 and put the city on the path to carbon neutrality by 2050. The Montreal Climate Partnership was formed in the wake of a successful collaboration established in 2018¬–2019 by a group of philanthropic foundations with the City of Montréal and C40 to develop the City's Climate Plan, and draws inspiration from the best mobilization models around the world, such as the Boston Green Ribbon Commission and London Business Climate Leaders. The Partnership places Montréal among the world's leading C40 cities by making the ecological transition a pillar of its economic prosperity and attractiveness. The initiative is funded by the Foundation of Greater Montréal, the Trottier Family Foundation, and the City of Montréal.