Greater Toronto and Hamilton Area Carbon Inventory
Emissions increased in all regions of the GTHA
Overall trend reflects little progress since 2015
header infogrpahic


Emissions climb toward pre-pandemic levels, risking 2030 targets

Increase of 4.5% to 51.2 million tonnes from 2020 to 2021

51.2 Mt total emissions
Increased by 4.5% in 2021
Annual 8% decrease needed
To hit 2030 targets across the GTHA
44% are from buildings
Buildings remain top source of emissions, followed by transportation.

The densely populated GTHA is the second-largest financial centre in North America and represents 42% of Ontario's total emissions.

8,244.42 km2 of contiguous urban land
7.7 million total population

The Greater Toronto and Hamilton Area (GTHA) in Canada includes the city of Toronto, the city of Hamilton, and the regional municipalities of Halton, Peel, York, and Durham.

This 8,244 square kilometre urban region, home to 7.3 million people, is Canada's commercial, distribution, and financial core. Almost half of Ontario's emissions come from this region. TAF acknowledges these boundaries were created by settlers and do not reflect the Indigenous people who have occupied these lands for thousands of years or their respective traditional territories or treaties.

Regional Data

Regional Emissions at a Glance

Carbon Emissions across the GTHA

Sector Data

Sector Emissions at a Glance