The case for adapting to extreme heat

The June 2021 heat wave in British Columbia was the deadliest disaster in the province's history, resulting in 619 direct heat-related deaths. The report estimates the societal cost of these lives lost at $5.5 billion using the Value of a Statistical Life (VSL) metric. Beyond mortality, the event caused $12 million in healthcare costs, significant agricultural revenue losses (at least $25 million), and disruptions to electricity and transportation infrastructure. Vulnerabilities were exacerbated by a lack of mechanical cooling in homes, inadequate urban greening, and institutional failures in disaster response and communication. The report argues that without adaptation, heat-related hospitalizations could double by 2030 and annual deaths could average 1,370 by 2030. Key recommendations include updating building codes for mechanical cooling, increasing urban forest canopies, improving weather warning lead times to three days, and implementing independent public reviews of disaster responses.

• The 2021 heat wave was one of the costliest disasters in British Columbia's history, primarily due to the loss of 619 lives. The economic value of avoiding these deaths is estimated at $5.5 billion based on the Value of a Statistical Life, while direct healthcare costs attributed to the event were $12 million.
• A lack of mechanical cooling in residential buildings was a primary driver of mortality; 98% of deaths and hospital visits during the heat wave were caused by extreme temperature exposure inside buildings. Only 7.4% of those who died had air conditioning in their homes, and only 15% of that group had the cooling active at the time of death.
• Extreme heat caused significant agricultural losses, including the death of approximately 661,000 poultry and a 25% decrease in farmed mussel production. Tree fruit producers lost over $17 million in revenue, and government-subsidized crop insurance payouts for tree fruits reached nearly $12 million.
• Critical infrastructure faced severe strain, including the failure of over 400 electrical transformers and the inoperability of CT and MRI scanners at several hospitals (including Lions Gate, Royal Columbia, and Surrey Memorial) due to cooling system failures.
• Institutional gaps and a lack of coordinated disaster response hindered the effectiveness of the heat wave reaction. Key emergency tools, such as the Provincial Emergency Coordination Centre and the BC Coroners Service Mass Fatality Response Plan, were not activated.
• Workplace safety and productivity were negatively impacted, with heat-related workplace injuries requiring compensation increasing by 180% compared to the previous three-year average. Workers in indoor industries, such as restaurant kitchens and warehouses, accounted for over a third of heat stress claims in 2021.
• Future projections indicate that without adaptation, heat-related hospitalizations in B.C. could reach nearly 6,000 per year by 2030, costing at least $100 million annually. Annual heat-related deaths could average 1,370 by 2030, with a societal cost of $12.2 billion per year.
• Adaptation measures such as doubling the rate of mechanical cooling uptake could reduce heat-related deaths by 12% by 2030 and hospitalizations by approximately 40% in the 2030s, saving $20 million per year in healthcare costs.
• Urban greening in the Lower Mainland could reduce heat-related deaths by 12% in the 2030s, equating to a reduction in societal costs of about $1 billion per year, although these benefits take decades to materialize as trees mature.
• Analysis of weather station data suggests that temperature forecasts are sufficiently accurate to provide public heat warnings three days in advance, which would only result in a 15% increase in false alarms compared to the current one-to-two-day notice.

APA

Beugin, D., Clark, D., Miller, S., Ness, R., Pelai, R., & Wale, J. (2023). The case for adapting to extreme heat. Canadian Climate Institute. https://climateinstitute.ca/wp-content/uploads/2023/06/The-case-for-adapting-to-extreme-heat-costs-of-the-BC-heat-wave.pdf

Chicago

Beugin, Dale, Dylan Clark, Sarah Miller, Ryan Ness, Ricardo Pelai, and Janna Wale. The case for adapting to extreme heat. Canadian Climate Institute, 2023. https://climateinstitute.ca/wp-content/uploads/2023/06/The-case-for-adapting-to-extreme-heat-costs-of-the-BC-heat-wave.pdf.

Wikipedia

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BibTeX

@techreport{beugin2023case, author = {Beugin, Dale and Clark, Dylan and Miller, Sarah and Ness, Ryan and Pelai, Ricardo and Wale, Janna}, title = {{The case for adapting to extreme heat}}, institution = {Canadian Climate Institute}, year = {2023}, month = jun, url = {https://climateinstitute.ca/wp-content/uploads/2023/06/The-case-for-adapting-to-extreme-heat-costs-of-the-BC-heat-wave.pdf}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }