What are the steam chimneys of NYC?

- NYC steam chimneys: The orange and white smokestacks you see in the middle of New York^[1]’s streets with steam flowing out of them^[1] are part of the New York City steam system^[1], which is a cleaner source of energy than oil or coal^[1] and serves over 1,500 buildings, including famous landmarks such as the Empire State Building^[1], the Chrysler Building, Grand Central Terminal^[1], and Rockefeller Center. The steam is produced at various steam plants as well as in co-generation plants located inside privately and publicly owned buildings and complexes like One Bryant Park^[1].