How much does it cost to charge an iPad for a year?
By The Associated Press
NEW YORK (AP) -
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 non-profit 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.
The group, known as EPRI, studied the power consumption of Apple Inc.'s iPad 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 others. 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.y .
(Copyright 2012 by The Associated Press. All Rights Reserved.)
Thursday, May 23 2013 12:13 PM EDT2013-05-23 16:13:30 GMT
Washington State Patrol is trying to track down a hit-and-run driver in a black Ford F150 pickup truck. State Trooper William Finn said the pickup driver ran a truck and trailer off the road on InterstateMore >
Washington State Patrol is trying to track down a hit-and-run driver in a black Ford F150 pickup truck.More >
Thursday, May 23 2013 11:45 AM EDT2013-05-23 15:45:05 GMT
Portland police have arrested the suspect in an assault and stabbing in Northeast Portland. James Moultrie was booked in the Multnomah County Jail on assault, kidnap, rape and sodomy charges.Police respondedMore >
Portland police have arrested the suspect in an assault and stabbing in Northeast Portland. James Moultrie was booked in the Multnomah County Jail on assault, kidnap, rape and sodomy charges.More >
Thursday, May 23 2013 12:32 PM EDT2013-05-23 16:32:38 GMT
Friends and family will gather Thursday night for a candlelight vigil to remember Ivanice Harris. Harris was last seen a week ago at a bar in Waikiki, Hawaii. According to family, she was in Hawaii toMore >
Friends and family will gather Thursday night for a candlelight vigil to remember Ivanice Harris.More >
Thursday, May 23 2013 2:44 PM EDT2013-05-23 18:44:59 GMT
A family of three was pulled from a burning condo in Aloha during a two-alarm fire Thursday morning. Washington County deputies were first to respond to the home at Southwest Jaden Drive at 4:47 a.m. TheyMore >
Gang Huo and his 11-year-old son, Tengyuan, are in critical condition at Legacy Emanuel Hospital. More >
Wednesday, May 22 2013 12:56 AM EDT2013-05-22 04:56:12 GMT
The body of a missing Portland woman has been found in Hawaii. A medical examiner's office in Hawaii confirmed Tuesday the body of Ivanice Harris was found near Yokohama Bay. A cause of death has notMore >
The medical examiner's office in Hawaii confirmed Tuesday the body of Ivanice Harris was found near Yokohama Bay. A cause of death has not yet been determined.More >
Thursday, May 23 2013 11:06 AM EDT2013-05-23 15:06:27 GMT
Police in Vancouver have received several reports of batteries being stolen from RVs in the area. Detectives are now looking for the person behind the thefts. Fox 12 spoke with Vancouver resident AlexisMore >
Police in Vancouver have seen a spike of RV battery thefts in recent days.More >
Thursday, May 23 2013 11:55 AM EDT2013-05-23 15:55:08 GMT
(RNN) - Dozens of Cleveland restaurants have pledged to give the man who rescued three Ohio women from captivity, free burgers for life. Charles Ramsey, the guy who famously stopped eating his Big MacMore >
More than a dozen of Cleveland restaurants have pledged to give the man who rescued three Ohio women from captivity, free burgers for life.More >