In a two - year deal brokered with Green Mountain Energy, a
renewable power and carbon offset retailer recently acquired by NRG Energy of New Jersey, the Empire State Building will purchase 55 million kilowatt - hours worth of
renewable energy certificates annually — enough to cover its
yearly electricity consumption.
As a result of the growth in both natural gas and
renewables, the U.S.
power sector recorded the lowest
yearly carbon emissions — down 4.3 percent from 2014 — since 1995.