Sidney Ribaux was the co-founder and executive director of Équiterre, a non-profit organisation based in Montreal, Quebec, Canada, promoting fair trade, energy conservation and ecological and socially just choices.
He was then executive director until 2019 and was involved in the development of Équiterre's strategies and educational projects on fair trade, ecological agriculture, energy efficiency and sustainable transportation.
He played an important role in the financial planning of public transportation in Quebec as well as in Canada's ratification of the Kyoto Protocol.
While working for the consumer protection group Option consommateurs from 1992 to 1998, he helped set up an energy-efficiency program targeted to low-income families.
Over the years, he has been a member of the UQAM Institute of Environmental Sciences, the Green Communities Canada Association and the Québécois Action Fund for Sustainable Development.