SIMAP emission factors: 2025 version
Comprehensive list of references used to calculate SIMAP emission factors, organized by reference.
Updated April 2026
2025 version (published January 2025)
- Table 2 Mobile Combustion CO2
- Table 4 Mobile Combustion CH4 and N2O for On-Road Diesel and Alternative Fuel Vehicles
- Table 10 Scope 3 Category 6: Business Travel and Category 7: Employee Commuting for CO2, CH4, and N2O
Emissions & Generation Resource Integrated Database (eGRID)
- eGRID 2023 (published June 2025)
2025 Residual Mix Emissions Rates (2023 Data) (released January 29, 2026)
Canada’s official greenhouse gas inventory
- EN_Annex13_Electricity_Intensity (2025)
- Updated data for 2021, 2022, and 2023
Cornerstone Data Sustainability Initiative
- Supply Chain Greenhouse Gas Emission Factors for U.S. Commodities, version 1.4 (published October 2025)
- Accessed November 19, 2025
NOAA National Weather Service Climate Prediction Center Degree Day Statistics
- Heating degree days (FY2025)
- Cooling degree days (FY2025)