GO
Loading...

Charging Your iPad Costs Just $1.36 Per Year

AP
Friday, 22 Jun 2012 | 10:18 AM ET
Tooga | Stone | Getty Images

That coffee you're drinking while gazing at your iPad? It cost more than all the electricity needed to run those games, emails, videos and news stories for a year.

The annual cost to charge an iPad is just $1.36, according to the Electric Power Research Institute, a nonprofit research and development group funded by electric utilities.

By comparison, a 60-watt compact fluorescent bulb costs $1.61, a desktop PC adds up to $28.21 and a refrigerator runs you $65.72 in the U.S.

The group, known as EPRI, studied the power consumption ofthe AppleiPad to determine the effect that the newly popular devices might have on the nation's electricity use.

The answer: not much.

If the number of iPads triples from the current 67 million, they would need the electricity from one small power plant operating at full strength.

But if people are using iPads instead of televisions to play video games, or ditching their desktop computers for iPads, the shift to tablets could mean lower overall power consumption. A desktop computer uses 20 times more power than an iPad.

Baskar Vairmohan, the EPRI researcher who conducted the iPad test, said the group is now studying usage to understand whether the explosion of tablets is adding to power consumption or reducing it.

Residential power demand is on track to fall for the third-straight year, according to the government. A weak economy is keeping people in smaller houses and shacked up with other people. At the same time, efficiency programs are pushing more efficient light bulbs, air conditioners and other devices into homes. Refrigerators use a quarter of the power they used a generation ago, according to EPRI.

For the iPad test, Vairmohan measured the amount of power used to charge up an iPad with a drained battery. He assumed that users would charge up every other day. Over a year, the latest version of the iPad consumed 11.86 kilowatt-hours of electricity. (Older versions consume somewhat less power.)

The juice would cost $1.36 at the U.S. average residential price of 11.49 cents per kilowatt-hour.

But there's an even cheaper way to go than the iPad. EPRI calculated the cost of power needed to fuel an iPhone 4 for year: just 38 cents.

email: tech@cnbc.com

  Price   Change %Change
AAPL
---

Featured

Contact Technology

  • CNBC NEWSLETTERS

    Get the best of CNBC in your inbox

    › Learn More
  • Matt Hunter is the senior technology editor at CNBC.com.

  • Cadie Thompson is a tech reporter for the Enterprise Team for CNBC.com.

  • Working from Los Angeles, Boorstin is CNBC's media and entertainment reporter and editor of CNBC.com's Media Money section.

  • Jon Fortt is an on-air editor. He covers the companies, start-ups, and trends that are driving innovation in the industry.

  • Lipton is CNBC's technology correspondent, working from CNBC's Silicon Valley bureau.

  • Mark is CNBC's Silicon Valley/San Francisco Bureau Chief covering technology and digital media.