Canadian National Inventory factor set

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. IBM® ESG Suite uses this submission as the source for provincial electricity factors in Canada. It also includes information on fossil fuels that is used for select data types. This factor set applies only to Canada.

Envizi ESG Suite has managed this factor set since 2014. The submission to the UNFCCC has been published consistently dating back to 2004. The factor set contains the breakdown of CO2, CH4 and N2O as well as the total CO2e for data type. Note that because of rounding in the source document there are instances where the combined sum of the CO2, CH4 and N2O emissions do not equal the total CO2e factor recorded for the period. The sum of the factors provided for the 3 gases may be slightly higher or lower, but the total CO2e value applied to your emissions comes directly from the source document so is considered the correct factor.

Table 1. Canadian National Inventory factor set
Element Description
Website Canada’s official greenhouse gas inventory – Main page
Upcoming publication date Publishes annually usually in April but sometimes there are delays (2023 was not published until July). Upcoming publication date: April-2025
Geographical coverage Factors are applied to the various provinces of Canada or to the country of Canada.
Data type coverage Publications exist from 2004 to the present.

Coverage is primarily for electricity information but natural gas and propane values have also been sourced from the publications.

Scope 1: fossil fuels (natural gas and propane).

Scope 2: Provincial Electricity (Note that Envizi ESG Suite uses the latest year in each publication which is classified as preliminary data. We do not revise that value if it changes in subsequent publications to avoid recalculating data).

Scope 3: fossil fuels (natural gas and propane).

Note that Envizi ESG Suite calculates transmission and line losses and these are visible in the Emissions Performance dashboard and categorized as ‘lifecycle emissions’ in the grid. Lifecycle emissions can also be extracted using the Monthly data summary report.

Effective and published dates The factor effective periods for the electricity information have been set to the calendar year aligning with the year of the data provided, while the published dates align with the publication window of each year's submission which is April - March of the next year.

For the fossil fuels the effective and publication periods have been set to the same publication window of each year submission which is April - March of the next year. For more information on effective and published dates, refer to Assigning factors.

If you require a custom period for your factors this will need to be managed as Custom factors.

Understanding Canadian electricity factors

Total CO2e values do not equal the sum of individual gases CO2, CH4 and N2O for Canadian electricity factors. The main reason is because of how the data is presented in the source document.

For example, the following figure shows that in 2020 as an example, the total CO2e/kWh value is not the sum of the 3 component gases. This is due to rounding and is a common situation found in many emission factor sets. Envizi ESG Suite must present and use factors exactly as they appear in source documentation.
Understanding Canadian electricity factors