I found this interesting Power-hungry gadgets add hundreds to electricity bills

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Sony PlayStation 3, cost five times as much to run as an average-sized refrigerator.

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A combination of desktop computer, LCD monitor, wireless router, plasma TV and DVD player on continuous active standby could add $450 a year to the power bill.

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In contrast, refrigerators have improved in energy efficiency by 4.6 per cent each year since 1993, with manufacturers phasing out poor energy performers.