It costs less than a pound to run an iPad for a year

An iPad uses 5% of the resources of a PC

Jonathan Fahey, for the Associated Press:

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.

$1.36 is just 88p. It's actually quite a lot more expensive than that to run an iPad in the UK, though, since electricity here is almost twice as expensive (13.7p as opposed to 7.4p per kilowatt hour). Even so, the key point stands up: the cost of running an iPad for a year is less than 5 per cent of the cost of running a desktop PC for a year.

They may not feel like it yet, but tablets are the future of computing. Just as laptop PCs have eaten away at the market share of desktops, so the same thing will happen with tablets and laptops.

And this, fundamentally, is the flaw in arguments that there must be limits to growth. It's an idea that has celebrated its 40th birthday this year: that economic growth requires continuous consumption of resources, which will eventually overshoot the carrying capacity of the earth. A recent publication by the New Economics Foundation restates it:

[I]ndefinite global economic growth is unsustainable. Just as the laws of thermodynamics constrain the maximum efficiency of a heat engine, economic growth is constrained by the finite nature of our planet’s natural resources (biocapacity). As economist Herman Daly once commented, he would accept the possibility of infinite growth in the economy on the day that one of his economist colleagues could demonstrate that Earth itself could grow at a commensurate rate.

Yet this little bit of news shows that to be false - or at the very least, not as self-evidently true as it seems. No-one can deny that moving from one desktop PC to 20 iPads feels a bit like some growth has happened; and yet it requires fewer, not more, resources.

Good news, everyone! Things might carry on getting better. That would be nice.

Charging for just under two pounds.

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

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Commons Confidential: What happened at Tom Watson's birthday party?

Finances, fair and foul – and why Keir Starmer is doing the time warp.

Keir Starmer’s comrades mutter that a London seat is an albatross around the neck of the ambitious shadow Brexit secretary. He has a decent political CV: he was named after Labour’s first MP, Keir Hardie; he has a working-class background; he was the legal champion of the McLibel Two; he had a stint as director of public prosecutions. The knighthood is trickier, which is presumably why he rarely uses the title.

The consensus is that Labour will seek a leader from the north or the Midlands when Islington’s Jeremy Corbyn jumps or is pushed under a bus. Starmer, a highly rated frontbencher, is phlegmatic as he navigates the treacherous Brexit waters. “I keep hoping we wake up and it’s January 2016,” he told a Westminster gathering, “and we can have another run. Don’t we all?” Perhaps not everybody. Labour Remoaners grumble that Corbyn and particularly John McDonnell sound increasingly Brexitastic.

To Tom Watson’s 50th birthday bash at the Rivoli Ballroom in south London, an intact 1950s barrel-vaulted hall generous with the velvet. Ed Balls choreographed the “Gangnam Style” moves, and the Brockley venue hadn’t welcomed so many politicos since Tony Blair’s final Clause IV rally 22 years ago. Corbyn was uninvited, as the boogying deputy leader put the “party” back into the Labour Party. The thirsty guests slurped the free bar, repaying Watson for 30 years of failing to buy a drink.

One of Westminster’s dining rooms was booked for a “Decent Chaps Lunch” by Labour’s Warley warrior, John Spellar. In another room, the Tory peer David Willetts hosted a Christmas reception on behalf of the National Centre for Universities and Business. In mid-January. That’s either very tardy or very, very early.

The Labour Party’s general secretary, Iain McNicol, is a financial maestro, having cleared the £25m debt that the party inherited from the Blair-Brown era. Now I hear that he has squirrelled away a £6m war chest as insurance against Theresa May gambling on an early election. Wisely, the party isn’t relying on Momentum’s fractious footsloggers.

The word in Strangers’ Bar is that the Welsh MP Stephen Kinnock held his own £200-a-head fundraiser in London. Either the financial future of the Aberavon Labour Party is assured, or he fancies a tilt at the top job.

Dry January helped me recall a Labour frontbencher explaining why he never goes into the Commons chamber after a skinful: “I was sitting alongside a colleague clearly refreshed by a liquid lunch. He intervened and made a perfectly sensible point without slurring. Unfortunately, he stood up 20 minutes later and repeated the same point, word for word.”

Kevin Maguire is the associate editor (politics) of the Daily Mirror

Kevin Maguire is Associate Editor (Politics) on the Daily Mirror and author of our Commons Confidential column on the high politics and low life in Westminster. An award-winning journalist, he is in frequent demand on television and radio and co-authored a book on great parliamentary scandals. He was formerly Chief Reporter on the Guardian and Labour Correspondent on the Daily Telegraph.

This article first appeared in the 19 January 2016 issue of the New Statesman, The Trump era