Greenhouse gas (GHG) emissions inventory

The TTC’s GHG emissions impact can be divided into two categories:

Direct and Indirect: In accordance with the Greenhouse Gas Protocol, our organization’s emissions are to be categorized as direct emissions (Scope 1) and indirect emissions (Scope 2 and Scope 3). City divisions, agencies and corporations have a responsibility to manage both.
Avoided: Public transit systems are in the unique position to displace GHG emissions through mode shift from higher emitting modes such as personal vehicles, congestion reduction, and efficient land use. We have defined these as avoided emissions (Scope 4) to communicate how the TTC contributes to the reduction of GHG emission throughout the City of Toronto and beyond.

Scope 1	Scope 2	Scope 3	Scope 4
Direct GHG emissions occurring from sources that are controlled or owned by the TTC	Indirect GHG emissions from purchased energy generated offsite but consumed by the TTC	All other indirect emissions that occur in the TTC’s value chain	Emission reductions that occur outside of a product’s life cycle or value chain, but as a result of the use that product

TTC’s GHG Emissions Inventory

The release of the TTC’s 2024 Environmental Sustainability Report will mark the beginning of our annual reporting on our progress in reducing our GHG emissions and environmental sustainability progress overall.

Below is a 2022 snapshot of TTC’s Scope 1 and Scope 2 GHG emissions in metric tonnes of CO2 equivalent that sets our emissions inventory.

Scope 1 – Direct Emissions

INDIVIDUAL GRAPHICS TO BE PROVIDED

Scope 2 – Indirect Emissions

INDIVIDUAL GRAPHICS TO BE PROVIDED

Scope 3 – Other Indirect Emissions

INDIVIDUAL GRAPHICS TO BE PROVIDED

Scope 4 – Avoided Emissions

INDIVIDUAL GRAPHICS TO BE PROVIDED

Greenhouse gas (GHG) emissions inventory

TTC’s GHG Emissions Inventory

Scope 1 – Direct Emissions

Scope 2 – Indirect Emissions

Scope 3 – Other Indirect Emissions

Scope 4 – Avoided Emissions

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