Subway Heat Could Power City Buildings Through New Geothermal Network

New York City and the MTA will study a thermal energy network at the Brooklyn Bridge–City Hall and Chambers Street stations that would capture heat from hot subway platforms and redirect it via geothermal boreholes to warm nearby government buildings in winter, cooling platforms in summer. The feasibility study, with design work eyed for 2027, would mark the first TEN in a U.S. transit system and aligns with the Chambers Street modernization, aiming to reduce indoor heat and energy use while testing a potential win‑win for transit and municipal buildings.