The Metro Vancouver Regional District recently published a report on building emissions focusing on greenhouse gases. Buildings are the second largest source of GHG emissions in our region. It found that while per capita emissions are slightly declining, actual emissions are rising.
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GHG and Nitrogen Oxide Emissions by Building Type. 2010 through 2022. Source: Metro Vancouver 2022 Emissions Inventory. |
Between 2010 and 2022, GHG emissions from residential buildings increased by 11.5% and from commercial buildings by 20.7%. Nitrogen oxide, which harms human health, has also been increasing. Using conventional natural gas for heating and hot water is the primary driver of building GHG emissions.
We must move from conventional natural gas to renewable natural gas and fully electric heating and hot water systems. Of course, this must be done while maintaining affordability.
I've discussed this in the past for detached and strata housing; energy-efficient retrofit programs are needed to help reduce emissions and save people money. Modern buildings are significantly more energy efficient than older buildings, but over 2/3rds of housing units in our region were built in the 20th century.
Retrofitting these buildings, such as installing electric heat pumps for heating and hot water, will help reduce GHG emissions. There are some rebate programs, but commercial and strata buildings can fall through the cracks of these programs, leaving out a huge section of our building inventory. For example, 61% of housing units in Langley City are apartments.
While newer buildings become more efficient and have lower emissions, more work needs to be done to help homeowners, stratas, and commercial building owners reduce their buildings' emissions.