What to do if you lose power or air conditioning in a heat wave blackout – National
Amid the heat wave currently blazing across Canada, experts say that additional stressors can lead to increased power outages and broken air conditioners.
A February 2025 Environment and Climate Change Canada (ECCC) report states that “prolonged periods of extreme heat events can strain the power grid as the demand for air conditioning and fan use increases,” which can cause local heat-related outages.The result of additional stress on power grids can lead to the idea of a “cascading failure,” according to Jeff Siegel, a professor of civil engineering at the University of Toronto.“When part of the grid goes down, the remaining electricity is routed through the rest of the grid and then that increases failure somewhere else because everywhere gets overloaded,” he said.“Hopefully we won’t ge...






