Cnet: Researchers from the Electric Power Research Institute (EPRI) have calculated that if you charge your iPad every other day, you will use just 12 kWh of electricity over twelve months, costing an average of $1.36 per year. By comparison, laptops consume about 72.3 kWh of electricity each year; 42-inch plasma TVs average 258 kWh each year.
"These results raise important questions about how the shifting reliance from desktop to laptop to mobile devices will change energy use and electricity requirements for the information age," said EPRI's Mark McGranaghan. "At less than a penny per charge these findings bring new meaning to the adage, 'A penny for your thoughts.'"
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