Firms helped to make PCs greener
The Green Advisory Service has been launched to help businesses reduce the carbon footprint left by PCs and other equipment. Its research found that a single PC left on overnight and at weekends racks up an annual electricity bill of £53. In addition a typical PC left on for 24 hours a day, 220 days of the year, is responsible for up to a tonne of CO2 over a 3-year period.
http://news.bbc.co.uk/2/hi/technology/6294799.stm