Computers need a lot of power even if they are on but not used.
“In terms of electricity, a typical computer uses about 300 watts on power excluding the printer. At five cents a kilowatt hour, if you leave your computer on all the time, it will cost about US$ 131 per year. That quite a bit of money!
On the other hand, if you turn your computer off at night and on weekends, the electrical cost drops to about US$ 31.
The cost drops even more if you turn it off whenever you’re not using it: as little as US$ 12 per year!
Think about it: a savings of US$ 119 per year [...] Just by the simple act of turning the computer off when it isn’t being used.” -- University of Oregon Green Computing Guide
Accordignly to Friends of the Earth (HK), cost range from HK$0.2/kWh to HK$0.4/kWh for conventional energy in Hong Kong. Therefore, one computer would cause an annual cost between HK$524 and HK$1,048 respectively. Following the University of Oregon business case, a savings of 90% or HK$472 or HK$943 could be realized.
Monday, November 5, 2007
Subscribe to:
Posts (Atom)
