In a report on cloud computing issued this week, the environmental group Greenpeace rated ten top Internet companies, including Apple, Google, Twitter and Amazon, on several factors such as each company's willingness to be transparent by providing information on its energy sources and the energy efficiency of its data centers.
In the report entitled "How Dirty is your Data", Apple, while receiving good marks for transparency, rated at the bottom for energy efficiency, primarily because its huge, new data center in North Carolina, called iDataCenter, relies largely on coal. Although Apple claimed its California operations used cleaner energy than that produced by most grids, iDataCenter has an estimated energy demand three times Apple's current use, significantly increasing Apple's environmental footprint. As Apple increases the online products it delivers from its iTunes platform, it will enlarge its cloud computing operations further.
"Apple's decision to locate its iDataCenter in North Carolina, which has an electrical grid among the dirtiest in the country (61 percent coal, 31 percent nuclear), indicates a lack of a corporate commitment to clean energy supply for its cloud operations," Greenpeace said in its report.
About 2 percent of worldwide energy use is consumed by data center computer servers, and this amount is increasing by 12 percent a year, Greenpeace reports, an energy demand that is more than that of Russia.
Greenpeace said many IT companies do not reveal the environmental impact of their energy consumption, and concentrate more on energy efficiency that on using clean energy. Most of their energy is supplied by coal and nuclear energy. Companies are locating their data centers in areas that afford cheap, abundant coal-powered electricity.
Yahoo was praised for its healthy and environment friendly equipment that used renewable energy and used minimal amounts of coal.
Greenpeace has said that Google says that it is conscious of the need to use renewable sources of electricity to power cloud computing, but it does not acknowledge the size of its carbon footprint.
