A carbon tax may not actually do a whole lot for emissions

There's a chicken/egg problem at work.

A carbon tax is most economists' favourite method of dealing with climate change. It is exactly the sort of simple, market-driven intervention that they tend to like: set a price per tonne of carbon emitted which is equal to the value of the damage that tonne does to the climate, and then sit back and what businesses and consumers react. Some may cut their usage; some may switch to low-carbon sources of energy, which suddenly become cheaper comparatively; and some may choose to just pay the extra cost (what happens in that last situation is debatable – some think the money should just count as general taxation, others that it should be put towards climate change prevention and mitigation).

The Washington Post's Brad Plumer suggests that it may not work as well as we would hope, however. He reports on a recent MIT study looking at the likely effect of a $20 a ton carbon tax in the real world – the value proposed by a pair of MIT researchers last month.

Plumer writes:

Sebastian Rausch and John M. Reilly of the MIT Global Change Institute recently put forward a proposal for a $20/ton carbon tax that would rise 4 percent each year, starting in 2013. (The funds would be used to offset taxes elsewhere.) Here’s what their economic model predicts would happen to U.S. greenhouse-gas emissions:

Blue line: MIT reference case with no carbon tax. Black line: EIA reference. Green line: Scenario with MIT carbon tax in place.

With a carbon tax in place, U.S. greenhouse gas emissions do start declining quite a bit (this is the green line). But by 2030, emission levels stall, even though the carbon tax keeps rising and rising each year. The United States wouldn’t get anywhere near the 80 percent cut by 2050 that the White House has envisioned.

One explanation here is that MIT’s proposed carbon tax just isn’t high enough. But Muro favors another possibility–that a carbon tax alone isn’t enough to drive deep reductions. The private sector tends to under-invest in energy R&D and key bits of infrastructure such as transmission lines. Without further policies, it’s unlikely that we’ll see a sweeping transformation of our energy system to give people alternatives to coal plants and gasoline-powered cars.

This echoes an argument I've heard several times from those on the more technical side of climate change prevention. For all that the economists and politicians like to talk about creating the conditions in which the private sector will be incentivised to help tackle climate change, those who are more keenly aware of the massive costs involved tend to be rather more pessimistic.

They point out that the carbon tax model provides a cash injection to providers of low-carbon energy – but only after the tax is already instituted. As a result, there's another weak link in the chain, which is the ability of those providers to secure loans to build the capacity required. That's possible for massive companies looking to get into a new area; and it's possible for smaller companies, provided they get enough certainty from the government to be able to convince bankers.

But the fear is that larger companies, already strongly embedded in the conventional energy infrastructure, have little incentive to devote money, which could be used to lower the cost of polluting fuels, to instead build new capacity; and smaller companies won't be left with enough time between when the government finally confirms a carbon tax, and when their new generation is actually needed.

At the same time, though, there is growing evidence that some companies really are going above and beyond the call of duty. Some of it may be greenwashing, and some may be token expenditure, but if there really is any sizeable investment in low-carbon infrastructure, then it makes a carbon tax that much more effective.

Carbon taxes can only lower emissions if they raise the price of polluting relative to an alternative. If that alternative isn't available, then they risk being simply another source of revenue for the state.

Wind turbines being prepared. Photograph: Getty Images

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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I can’t follow Marie Kondo's advice – even an empty Wotsits packet “sparks joy” in me

I thought I’d give her loopy, OCD theories a go, but when I held up an empty Wotsits bag I was suffused with so many happy memories of the time we’d spent together that I couldn’t bear to throw it away.

I have been brooding lately on the Japanese tidying freak Marie Kondo. (I forgot her name so I typed “Japanese tidying freak” into Google, and it was a great help.) The “Japanese” bit is excusable in this context, and explains a bit, as I gather Japan is more on the case with the whole “being tidy” thing than Britain, but still.

Apart from telling us that we need to take an enormous amount of care, to the point where we perform origami when we fold our underpants, which is pretty much where she lost me, she advises us to throw away anything that does not, when you hold it, “spark joy”. Perhaps I have too much joy in my life. I thought I’d give her loopy, OCD theories a go, but when I held up an empty Wotsits bag I was suffused with so many happy memories of the time we’d spent together that I couldn’t bear to throw it away.

After a while I gave up on this because I was getting a bit too happy with all the memories, so then I thought to myself, about her: “This is someone who isn’t getting laid enough,” and then I decided that was a crude and ungallant thought, and besides, who am I to wag the finger? At least if she invites someone to her bedroom no one is going to run screaming from it, as they would if I invited anyone to my boudoir. (Etym: from the French “bouder”, to sulk. How very apt in my case.) Marie Kondo – should bizarre circumstance ever conspire to bring her to the threshold – would run screaming from the Hovel before she’d even alighted the stairs from the front door.

I contemplate my bedroom. As I write, the cleaning lady is in it. To say that I have to spend half an hour cleaning out empty Wotsits packets, and indeed wotnot, before I let her in there should give you some idea of how shameful it has got. And even then I have to pay her to do so.

A girlfriend who used to be referred to often in these pages, though I think the term should be a rather less flippant one than “girlfriend”, managed to get round my natural messiness problem by inventing a game called “keep or chuck”.

She even made up a theme song for it, to the tune from the old Spiderman TV show. She would show me some object, which was not really rubbish, but usually a book (it may not surprise you to learn that it is the piles of books that cause most of the clutter here), and say, “Keep or chuck?” in the manner of a high-speed game show host. At one point I vacillated and so she then pointed at herself and said, “Keep or chuck?” I got the message.

These days the chances of a woman getting into the bedroom are remote. For one thing, you can’t just walk down the street and whistle for one much as one would hail a cab, although my daughter is often baffled by my ability to attract females, and suspects I have some kind of “mind ray”. Well, if I ever did it’s on the blink now, and not only that – right now, I’m not even particularly bothered that it’s on the blink. Because, for another thing, I would frankly not care to inflict myself upon anyone else at the moment.

It was all a bit of a giggle eight years ago, when I was wheeled out of the family home and left to my own devices. Of course, when I say “a bit of a giggle”, I mean “terrifying and miserable”, but I had rather fewer miles on the clock than I do now, and a man can, I think, get away with a little bit more scampish behaviour, and entertain a few more illusions about the future and his own plausibility as a character, when he is squarely in his mid-forties than when he is approaching, at speed, his middle fifties.

Death has rather a lot to do with it, I suppose. I had not actually seen, or touched, a dead body until I saw, and touched, my own father’s a few weeks ago. That’s what turns an abstract into a concrete reality. You finally put that to one side and gird up your loins – and then bloody David Bowie snuffs it, and you find yourself watching the videos for “Blackstar” and “Lazarus” over and over again, and reach the inescapable conclusion that death is not only incredibly unpleasant, it is also remorseless and very much nearer than you think.

And would you, dear reader, want to be involved with anyone who kept thinking along those lines? I mean, even if he learned how to fold his undercrackers into an upright cylinder, like a napkin at a fancy restaurant, before putting them in his drawer? When he doesn’t even have a drawer?

Nicholas Lezard is a literary critic for the Guardian and also writes for the Independent. He writes the Down and Out in London column for the New Statesman.

This article first appeared in the 05 February 2015 issue of the New Statesman, Putin's war