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Hello, I’m Emily. I’m always fascinated by the heat levels in subway stations. The concept of utilizing this heat for cooling purposes elsewhere is intriguing. I’ve previously covered the utilization of waste heat from various sources like nuclear power plants, paper mills, and sewers. So, why not apply this to subways as well?
Highlights of the Week:
- Canadian technology targeting cooling of hot New York City subways
- Insight into how wildfires create thunderclouds
- Understanding ‘wishcycling’ and its impact on recycling efforts
Canadian Technology Aimed at Cooling New York City Subways
A woman uses a handheld fan on a scorching New York City subway platform in June 2025. (Jeenah Moon/Reuters)
Underground subway stations worldwide, including those in Canadian cities like Montreal, are experiencing rising temperatures, prompting concerns among commuters. To address this, a Canadian company is introducing an energy-efficient cooling solution in New York City’s subway network.
Cascara Energy, based in Toronto, is collaborating with the Metropolitan Transportation Authority of New York to implement a radiant cooling system in the ceiling arches of the East Broadway station. The initial units are set to be operational by the end of August, with the pilot program running until the conclusion of 2027.
This innovative system employs loops of chilled water-filled pipes to absorb heat, creating a more comfortable environment for passengers passing underneath.
According to Lucas Bejarno, an MTA spokesperson, the cooling effect is akin to walking through the refrigerated section of a supermarket.