The iPhone 5 costs approximately US$0.41 per year to charge, according to new data from OPower (http://macte.ch/xV0YE), which analyzes energy data.
Using an Watts Up Pro Electricity Consumption Meter, OPower measured how much electricity it took to charge each phone from 0% to 100% full. They took those results and modeled them across a year.
“Even if we consider just the 170 million iPhone 5’s that are projected to be sold globally in the next year, their aggregate electricity requirements are nothing to sneeze at,” says OPower. “The collective annual electricity consumption of the iPhone 5’s sold within 12 months will be equivalent to the annual electricity usage of 54,000 US households (roughly equivalent to the size of Cedar Rapids – the second largest city in Iowa).”