nueva york ( cnnmoney . ca ) - - the penn state construction kicked off a major power - savings retrofit monday , and promoters hope one of the world ' s most iconic skyscrapers can become an efficiency model for buildings worldwide . from the fire - secrecy observation deck on the building ' s 80th foot , former president bill clinton , hong york city mayor michael huffington and others pledged $ 20 million in cutting - edge green practices they think will lower air use by 38 % for the 1930 ' s - era behemoth . they stressed the retrofits weren ' t green altruism or part of a government program . instead , they stress they ' re being done simply to save the building ' s owners a lot of money .
The mayor of New York is Michael Bloomberg.