The Lachenaie landfill is a landfill in Terrebonne, Quebec – northeast of Montreal. Along with the Ste. Sophie landfill, these two dumps collect garbage for the Greater Montreal Area. Currently, Lachenaie receives approximately 30% of the residual materials produced by the greater Montreal area.
The Lachenaie Landfill began receiving municipal solid waste in 1968. Non-hazardous waste comes from the cities of Montreal and Laval as well as from the municipalities of L’Assomption, Thérèse-De-Blainville, Deux-Montagnes, Joliette, Montcalm, Mirabel, Quebec, Rivière-du-Nord and Montérégie. The Lachenaie Landfill Site is owned and operated by BFI Canada Inc.
Construction of the landfill-to-gas collection field and power plant was completed to generate electricity in January 1996. Its electricity is fed into the Hydro Quebec energy grid. The plant generates enough power to satisfy the requirements of approximately 2,500 homes annually.