According to the IBM’s 2011 Corporate Responsibility Report, the company conserved about 378,000 megawatt hours of electricity during the year. Talking about the last two decades, from 1990 to 2011, the company saved 5.8 billion kilowatt-hours of electricity and had avoided about 3.7 million metric tons of carbon dioxide emissions. The company further was able to save around $43 million in energy saving in and whole during 2011.
A total of 364 IBM facilities were supported due to the savings to more than 2,300 conservation efforts. Modifications to HVAC operations at 155 locations, saving 41,870 megawatt-hours of electricity (or $5.2 million) and the installation of energy-efficient lighting and occupancy schedules at 203 locations, which has helped reduce electricity usage by 16,200 megawatt-hours (or $1.9 million) are the few such things that led the IBM save huge, to read the whole report , click here.