These renovations to the Empire State Building will save millions each year through energy conservation. From the New York Times:

Once the world’s tallest building, the Empire State Building is striving for another milestone: It is going green.

Owners of the New York City landmark announced on Monday that they will be beginning a renovation this summer expected to reduce the skyscraper’s energy use by 38 percent a year by 2013, at an annual savings of $4.4 million. The retrofit project will add $20 million to the $500 million building makeover already under way that aims to attract larger corporate occupants at higher rents.

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