I’m one of ten economists who has signed a statement criticising the inadequacies of the Rudd government’s emissions trading scheme. The statement is over the fold.
The weakness of the scheme and the fact that emissions reductions achieved through voluntary action or the newly announced home insulation scheme don’t attract credits have led to a revival of the debate over the merits of a carbon tax, as an alternative to emissions trading. Of course, it is possible to have both, as in hybrid schemes such as that proposed by Warwick McKibbin.
The question of whether to go with a carbon tax, emissions trading or a hybrid turns on two main issues. First, with a tax, or with a hybrid scheme where the emissions price is capped, we get price certainty at the expense of uncertainty about how much emissions will be reduced. With a pure emissions scheme, or a hybrid scheme in which the tax acts as a price floor, we have certainty about achieving at least the target level of emissions reductions, but uncertainty about how high the price might be. As I’ve argued before, the risks of not cutting emissions enough outweigh the risks of setting the price too high.
The other question is more pragmatic. Which approach gives the best chance for Australia to contribute to a global agreement that will actually stabilise the climate. In the past, I’ve been of the view that a pure emissions trading scheme is the way to go in this respect, and I still can’t see that an international agreement is likely to be reached without general adoption of emissions trading schemes. . But there’s no doubt that developments over the past year or so have strengthened the case for making a carbon tax part of the mix.
Now, here’s the release