Canada contains less than 0.5 per cent of the world’s population, yet it contains 18 per cent of the cities which promise to ensure new buildings operate at net-zero carbon by 2030. 

A view of downtown Toronto. With Vancouver and Montreal, Toronto has signed on to a global net-zero carbon buildings initiative. (Google Maps image)

Toronto, Vancouver and Montreal have all made the pledge as part of the World Green Building Council Net Zero Carbon Buildings Commitment. The program will officially kick off Sept. 13 at the Global Climate Action Summit in San Francisco.

The other 16 global cities accepting the non-binding commitment are Copenhagen, Johannesburg, London, Los Angeles, New York City, Newburyport, Paris, Portland, San Francisco, San Jose, Santa Monica, Stockholm, Sydney, Tokyo, Tshwane, and Washington. The commitment also involves ensuring all buildings in the cities, old or new, will meet net-zero carbon standards by 2050.

The WorldGBC’s definition of a net-zero carbon building is a building that is highly energy-efficient and fully powered from on-site and/or off-site renewable energy sources. The WorldGBC says in a release announcing the initiative such “bold commitments” are essential steps in delivering on the goals of the Paris Agreement and keeping the global temperature rise below 1.5 Celsius degrees.

Buildings emit 50 per cent-plus of GHG

Buildings in urban areas are one of the largest sources of greenhouse gas emissions, and typically account for more than half of a city’s emissions. In London, Los Angeles and Paris, buildings account for well over 70 per cent of the cities’ overall emissions.

Currently, half a million people die prematurely each year due to outdoor air pollution caused by energy used in buildings, the WorldGBC says.

Part of the challenge for the cities is municipal governments do not have direct control over all the buildings within their boundaries. The commitment includes a pledge to work together with provincial and federal governments and the private sector to drive this transformation and calls on national governments for equal action.

The commitment has been orchestrated by C40 cities, a global group of major cities committed to delivering on the most ambitious goals of the Paris Agreement at the local level.