According to calculations by experts from the Lawrence Berkeley National Laboratory, the power consumption of Internet servers and cooling systems in the United States was 45 billion kilowatt-hours in 2005, writes
CNet . This means a twofold increase compared with 2000.
Also in 2005, the global power consumption of Internet-related computing systems was 123 billion kilowatt-hours.
At the same time, in the US, servers consume 1.2% of the total amount of energy, while globally, this figure is 0.8%. According to the authors of the study, by 2010 there may be a 40% increase in energy consumption (compared to 2005), but it is not unlikely that it will be more - up to 75%.