Are unilateral carbon emission cuts the next best thing to an effective multilateral agreement?

Carbon emission reductions are an international public good which will always be undersupplied. The benefits of emission cuts are available to all irrespective of whether they cut emissions or not so there is always the temptation to not cut your own emissions unless your reduction is decisive. It is agreed in the recent court case that New Zealand’s carbon emissions are trivial on the global scale.

Free riding is much more likely for international public goods because there is no effective mechanism for compelling nations to cut their carbon emissions short of a green tariff war. Even a green tariff war fails unless it is most countries ganging up on a few recalcitrant carbon emitters.

Even if the major emitters cut back, the developing countries have made it clear that they will not sacrifice their development for global climate objectives. Many developed countries are dragging their feet on cutting emissions and that is before we mention the Trump administration withdrawing from the relatively modest targets in the Paris agreement of 2 years ago.

In the absence of the provision of an international public good to a sufficient level, which are emission cutbacks of about 10 times the Paris targets, unilateral contributions to the provision of that global public good make NZ poorer. Will making ourselves unilaterally poorer help us adapt to the runaway climate change that has been foretold by so many?

What is even worse is handcuffing relatively efficient agricultural industries with a high carbon price. This will provide a good incentive for the export of dirty production to less enlightened countries. Our dairy exporters would lose market share to higher carbon emitting countries.

It can be argued that unilateral reductions by NZ because of a higher than the international average carbon price could quicken global warming. The point of carbon taxes is to encourage industries to migrate to the most efficient places of production and therefore lowest carbon emissions. 

Making our dairy industry less efficient because of unilaterally higher carbon taxes means more dairy is produced in other countries that are not restraining their carbon emissions. In consequence, carbon emissions globally may increase but New Zealand is poorer for its unilateral restraint.

The carbon tax is supposed to give people the right incentives about what to buy and where to produce. Making the world’s most efficient dairy producer produce less does not sit well with that.

The whole point of putting a price on carbon emissions is to shift the economy out of high carbon emission activities into low carbon emission activities. The risk of a even higher price on carbon in New Zealand relative to the rest of the world is the reverse will happen.

The most likely international scenario is not much is done at all about cutting carbon emissions. Things will be done here and there but as soon as cutting emissions becomes costly, political support will fade. Tony Abbott will not be the only politician to describe a carbon tax as a great big new tax.

In such a world, is it in anyone’s interest for the most efficient agricultural producers to be shooting themselves in the foot. Should not they be taking on as much production as they can because their efficiency reduces total global emissions.

Given this gloomy outlook, Greenpeace and the Greens should be born-again supply-side economists pushing every Rogernomics reform they can find to increase economic growth. Richer is safer, wealthier is healthier. A richer New Zealand is more able to roll with the punches of their foretold runaway climate change and make the necessary adaptations.

Climate change activists must swallow two dead rats rather than one if they really want to deal with the runaway climate change they foretell so often. Not only must they embrace nuclear power, they must go a 2nd ideological bridge too far and embrace a competitive market economy with gusto.

If there is no effective multilateral agreement to cut emissions, do not assume unilateral cutbacks are the next best thing. The best solutions call for strange bedfellows if there is no planet B.

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