The cost of charging your iPhone 5 for a year is just 41 cents

. Good news: The iPhone 5 doesn't just feel light in your hand, it will also feel light in your electric bill. The energy-consumption researchers at Opower on Thursday released a study showing that Apple's (AAPL) newest smartphone costs just $0.41 per year to charge, or $0.12 less than the Samsung (005930) Galaxy S III. In fact, Opower says that the only big-name consumer device to suck up less power than the iPhone 5 was the iPhone 4, which cost just $0.38 to charge per year.

Boy Genius Report , The cost of charging your iPhone 5 for a year is just 41 cents, The cost of charging your iPhone 5 for a year is just 41 cents