NYC Eyes Subway Heat Recovery to Cool Stations, Warm Buildings

Beneath the streets of New York, a city that has long endured the paradox of sweltering underground tunnels and costly winter heating bills is beginning to ask whether these two burdens might be one solution. Mayor Zohran Mamdani announced in August 2026 a formal study into heat-recovery systems that would draw thermal energy from dangerously overheated subway stations and redirect it to warm nearby buildings in winter. The proposal does not yet promise transformation, but it marks a meaningful shift in civic imagination — from treating waste as a problem to treating it as a resource.