Apple’s iPhone 5 costs just US$0.41 to charge per year in the US according an energy efficiency company study. Taking the average energy cost in Australia into account, this means local iPhone users would pay about $0.91 to charge their iPhone 5 over the year.
The Opower study in the US notes that smartphones and tablets require significantly less energy than other consumer electronics such as laptops, desktops, TVs or game consoles, but the sheer number of smartphones significantly increases their global energy impact.
“While the annual electricity requirements of charging a smartphone are negligible, let’s not forget about the power of multiplication,” Opower’s Barry Fischer said.
“Even if we consider just the 170 million iPhone 5s that are projected to be sold globally in the next year, their aggregate electricity requirements are nothing to sneeze at. 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.”
The study recorded the amount of energy required to charge the smartphones from 0 percent to 100 percent, then multiplied the energy by 365, assuming users charge their phones daily.
The iPhone 5 consumes 9.5 watt-hours and takes 1 hour and 50 minutes to fully charge, while the Samsung Galaxy S III consumes 12.3 watt-hours and takes 2 hours and 26 minutes to reach capacity.
According to a Energy Users Association of Australia report in March, Australian households pay 122 percent more than the US per kilowatt-hour, which means an iPhone 5 will cost Australians $0.91 per year on average to charge.