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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What Jeremy Corbyn gets right about the single market

Technically, you can be outside the EU but inside the single market. Philosophically, you're still in the EU. 

I’ve been trying to work out what bothers me about the response to Jeremy Corbyn’s interview on the Andrew Marr programme.

What bothers me about Corbyn’s interview is obvious: the use of the phrase “wholesale importation” to describe people coming from Eastern Europe to the United Kingdom makes them sound like boxes of sugar rather than people. Adding to that, by suggesting that this “importation” had “destroy[ed] conditions”, rather than laying the blame on Britain’s under-enforced and under-regulated labour market, his words were more appropriate to a politician who believes that immigrants are objects to be scapegoated, not people to be served. (Though perhaps that is appropriate for the leader of the Labour Party if recent history is any guide.)

But I’m bothered, too, by the reaction to another part of his interview, in which the Labour leader said that Britain must leave the single market as it leaves the European Union. The response to this, which is technically correct, has been to attack Corbyn as Liechtenstein, Switzerland, Norway and Iceland are members of the single market but not the European Union.

In my view, leaving the single market will make Britain poorer in the short and long term, will immediately render much of Labour’s 2017 manifesto moot and will, in the long run, be a far bigger victory for right-wing politics than any mere election. Corbyn’s view, that the benefits of freeing a British government from the rules of the single market will outweigh the costs, doesn’t seem very likely to me. So why do I feel so uneasy about the claim that you can be a member of the single market and not the European Union?

I think it’s because the difficult truth is that these countries are, de facto, in the European Union in any meaningful sense. By any estimation, the three pillars of Britain’s “Out” vote were, firstly, control over Britain’s borders, aka the end of the free movement of people, secondly, more money for the public realm aka £350m a week for the NHS, and thirdly control over Britain’s own laws. It’s hard to see how, if the United Kingdom continues to be subject to the free movement of people, continues to pay large sums towards the European Union, and continues to have its laws set elsewhere, we have “honoured the referendum result”.

None of which changes my view that leaving the single market would be a catastrophe for the United Kingdom. But retaining Britain’s single market membership starts with making the argument for single market membership, not hiding behind rhetorical tricks about whether or not single market membership was on the ballot last June, when it quite clearly was. 

Stephen Bush is special correspondent at the New Statesman. His daily briefing, Morning Call, provides a quick and essential guide to domestic and global politics.