Feeds

Powering your iPad costs $1.36 per year

And other wacky stats from wooly electro-boffins

Secure remote control for conventional and virtual desktops

If you charge your fully depleted iPad every other day, it'll cost you a buck thirty-six per year, according to a just-released study by the Electric Power Research Institute (EPRI) of Palo Alto, California.

"At less than a penny per charge these findings bring new meaning to the adage, 'A penny for your thoughts'," said the EPRI's veep for power delivery and utilization Mark McGranaghan when announcing the results.

We at The Reg are as fond of wacky stats as anyone, but this one – along with the EPRI's assertion that a quadrupling of iPad sales in two years would require the energy generated by three 250-megawatt power plants – is wackier than most.

Why exactly $1.36, for example? To their credit, the EPRI notes that "Costs may vary depending on what region that a consumer resides and the price of electricity in a particular location," but, as any reasonably savvy middle-schooler might say, "Well, duh..."

On more solid ground, perhaps, are the EPRI's claims that an iPad being fully charged every other day consumes under 12kWh per year, and that a 60-watt compact-fluorescent lightbulb eats up just a bit more power – about 14kWh – and costs $1.61 annually. But is that bulb burning 24/7? The oracle is silent.

EPRI also notes that 42-inch plasma-screen TVs suck up 358kWh during the same period – that's 358, not 357 or 359, mind you – and "laptop PCs" consume 72.3kWh annually, costing $8.31.

We contacted the EPRI to ask, among other things, just what they mean by "laptop PCs" – that is, do their figures represent, say, an entry-level Apple MacBook Air or a tricked-out Alienware M18x – but they hadn't responded by the time we clicked the Publish button for this article.

According to the report, an iPhone 3G's yearly 2.2kWh power will cost you a quarter per year. The EPRI doesn't provide figures for an iPhone 4 or 4S, however. Perhaps those models were sold out at the West Town Mall Apple retail store in Knoxville, Tennessee, the town that's home to the EPRI's power utilization laboratory where the tests were conducted. ®

Beginner's guide to SSL certificates

More from The Register

next story
Xperia Z3: Crikey, Sony – ANOTHER flagship phondleslab?
The Fourth Amendment... and it IS better
Don't wait for that big iPad, order a NEXUS 9 instead, industry little bird says
Google said to debut next big slab, Android L ahead of Apple event
Microsoft to enter the STRUGGLE of the HUMAN WRIST
It's not just a thumb war, it's total digit war
Ex-US Navy fighter pilot MIT prof: Drones beat humans - I should know
'Missy' Cummings on UAVs, smartcars and dying from boredom
Netscape Navigator - the browser that started it all - turns 20
It was 20 years ago today, Marc Andreeesen taught the band to play
A drone of one's own: Reg buyers' guide for UAV fanciers
Hardware: Check. Software: Huh? Licence: Licence...?
The Apple launch AS IT HAPPENED: Totally SERIOUS coverage, not for haters
Fandroids, Windows Phone fringe-oids – you wouldn't understand
Apple SILENCES Bose, YANKS headphones from stores
The, er, Beats go on after noise-cancelling spat
prev story

Whitepapers

Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Why and how to choose the right cloud vendor
The benefits of cloud-based storage in your processes. Eliminate onsite, disk-based backup and archiving in favor of cloud-based data protection.
Three 1TB solid state scorchers up for grabs
Big SSDs can be expensive but think big and think free because you could be the lucky winner of one of three 1TB Samsung SSD 840 EVO drives that we’re giving away worth over £300 apiece.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.