Climate Change And Economic Policy. An Australian Perspective

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Michael Pasquale 14270745

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Climate Change and Economic Policy

An Australian Perspective

Economic Policy 302


Climate change is defined as “Change of climate which is attributed directly or indirectly to human activity that alters the composition of the global atmosphere and which is in addition to natural climate variability observed over comparable time periods”(Bruno and Mehmet 2010). Modern methods of production create greenhouse gasses as a negative externality via the market failure and government intervention is needed to rectify the situation.

Climate change is an issue for the Australian government as it needs to intervene to correct the market failure caused by the free markets inability to provide property rights to mitigate damages caused by the negative externality. (Calhoun 2010) The greenhouse gas externality is a by-product of the production of goods and services via the over-production of emissions. Dr Peter John Wood argues that” climate change is an indisputable threat” and on that basis, as well as the world stage Australia has taken the reins in acting upon climate change.  

An externality is defined as” are the unintended consequence of one economic agent’s economic activity that affect another agent’s economic activity, but which are not adequately priced through the market (Sonia and Jeff 2011)”. This is also known as market failure and requires government intervention to be able to rectify the problem due to a lack of property rights and correct mitigation for parties involved with the transaction. In this case, one form of the market failure is because the cost of CO2 is not factored into the transaction price.

The Gillard government continued a legacy that was started with the Howard government back in 2007 that saw a Carbon Emissions Trading scheme take part in the Australian government to tackle Australia’s greenhouse gas emissions (Chris 2011). The Carbon tax was implemented on June 1st 2012 and has been controversial amongst politicians and economists alike according to Clive’s article “Australia's Carbon Tax: A Sheep in Wolf's Clothing”.

The steps taken to implement a policy should be understood first before critiquing from different viewpoints.

The four major points of policymaking are:

  • Specify the goals of policy
  • Identify the targets
  • Specify the policy instruments
  • Model the economy linking the instruments to the targets

Using this framework, the goal’s of the policy are to mitigate damages caused by the production of greenhouse gasses on the (global) environment on a national scale and decrease the amount of pollution via increasing the price of polluting. The targets of the policy are the agents involved (Firms producing pollution, environment and households) with the transactions. Firms are the largest creators of the pollution and the households are directly affected by price increases, therefore their welfare post-tax needs to be considered in a socially acceptable policy. The policy instruments include subsidies to the households most affected by the increases in prices of amenities as well as the Pigovian Tax on polluting (Energy 2012). Lastly, the model that directly links the economy to the instruments proposed can be shown below.

Figure 1.1

The tax, as shown by the increase in the Marginal private cost (Red) plus the Figure 2

tax brings the externality into equilibrium with the social cost. The amount of gain to the social benefit is the darker area and is also the taxation revenue collected on behalf of the government. This also decreases output by the difference in Original output-New output. This can also be shown on a Supply and Demand graph. The graph to the right illustrates the effectiveness of the tax on the existing market price and therefore reducing the quantity of pollution emitted. This tax is directly placed on the top 500 polluting firms in Australia which account for the majority of the pollution via production.

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The Department for Climate Change and Efficient Energy published their “Forth Assessment Report” outlining that “There is clear evidence that our climate is changing, largely due to human activities”. One can infer that the government is acting morally and taking partial responsibility for these human activities, hence action for change and mitigation.

Market failure is defined as the inability of the market being able to deliver an efficient level of goods and or services (Calhoun 2010). This is an important aspect when determining what aspects of a policy are vital in addressing the issue at hand, because the situation of ...

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