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Headquartered in Redmond , Washington , Microsoft Corporation is one of the world ’ s largest technology and software companies . As part of its commitment to operating sustainably , Microsoft is purchasing more than 2.4 billion kilowatt-hours ( kWh ) of green power annually , making the company the second largest green power user in the Green Power Partnership ( GPP ) as of January 2014 . Microsoft ’ s purchase , along with a combination of energy efficiency measures and an investment in high-quality carbon reduction projects , resulted in the company meeting its goal of reducing carbon emissions by at least 30 percent per unit of revenue below the company ’ s 2007 baseline .

30 Feburary 2016