Canada’s official greenhouse gas inventory – Main page
Canada's official national greenhouse gas inventory is prepared and submitted annually to the United Nations Framework Convention on Climate Change (UNFCCC) by April 15 of each year, in accordance with the Guidelines. The annual inventory submission consists of the National Inventory Report (NIR) and the Common Reporting Tables (CRT) tables. Gases for which emissions are estimated include carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), hydrofluorocarbons (HFC), perfluorocarbons (PFC), sulfur hexafluoride (SF6) and nitrogen trifluoride (NF3). The report covers:
- anthropogenic (human-caused) emissions by sources and removals by sinks
- annual emissions estimates dating back to 1990
Note that to account for the creation of Nunavut in 1999, data for years preceding 1999 show Nunavut and Northwest Territories as a combined region.
General information: About Canada's greenhouse gas inventory
Inventory report
- Overview of Canada’s Greenhouse Gas Emissions 1990 to 2024
- Executive summary of the report: Greenhouse gas sources and sinks in Canada: executive summary 2026
- Complete report: National inventory report 1990 to 2024: greenhouse gas sources and sinks in Canada 2026
Inventory data
Contact us
International engagement – Inventory Reporting to the United Nations Framework Convention on Climate Change
- United Nations: Climate Change
- Canada's submission to the United Nations
- Reporting guidelines on annual inventories
Inventory Guidelines from the Intergovernmental Panel on Climate Change
- 2019 Refinement to the 2006 Intergovernmental Panel on Climate Change (IPCC) Guidelines for National Greenhouse Gas Inventories
- 2013 Supplement to the 2006 Guideline for National Greenhouse Gas Inventories Wetlands (Wetland supplement)
- 2006 IPCC Guidelines for National Greenhouse Gas Inventories