Question
2.Scenario In the island nation of Autarka, electricity is primarily generated by burning fossil fuels, a significantcant contributor to climate change. The government has proposed
2.Scenario
In the island nation of Autarka, electricity is primarily generated by burning fossil fuels,
a significantcant contributor to climate change. The government has proposed introducing a
60% tax on retail electricity prices to provide consumers with an incentive to save electricity
and purchase more energy efficient appliances.
Community groups in Autarka have expressed concern that the proposed tax will dis-
proportionately hurt low income households. These households spend a larger proportion
of their income on energy, and may not be able to afford to purchase new appliances.
In response, the government has suggested providing compensation to low income
households to ensure that they are no worse o. However, some commentators have
criticised this suggestion, claiming that compensation would be too expensive, and drive
up demand for electricity amongst low income households.
2.1 Your task
Your task is to estimate the impact of the proposed tax on low-income households, and
determine the level of compensation necessary to ensure that they are no worse o as a
result of the tax. You are also to assess the claims regarding the cost of compensation,
and effect of compensation on low-income household demand for electricity.
2.2 Low-income households
Using data from household surveys, you have determined that the `typical' low-income
household has a monthly income of $2400. The household's preferences are represented
by the utility function,
U = x2y ;
where x represents the quantity of electricity consumed, measure in Megawatt hours
(Mwh), and y represents the quantity of the composite good consumed. The associate
marginal utilities are,
MUx = 2xy and MUy = x2:
The price of electricity is currently Px = $100 per Mwh, and the price of the composite
good is normalised to Py = 1.
3.2 Analysis
The second section in your reports is the analysis section. In this section you must complete
each of the steps detailed below. The required analysis draws on content covered in lectures
1{5. When completing the steps you must:
Type all equations using the `Insert Equation' function (or equivalent).
Show all of your working and include sufficient written description for the reader to
follow your process.
Note that hand draw figures and equations are not acceptable. There is no word/page
limit for the analysis section.
Step 1: Derive the marginal rate of substitution for the typical low-income household.
Step 2: Find the household's electricity demand function, and composite good demand
function. Use Px to represent the price of electricity. You should substitute for Py and I
using the values in the scenario.
Step 3: Find the household's optimal consumption basket under the initial prices (no tax).
What utility does the household derive from this basket?
Step 4: Find the household's optimal consumption basket if a carbon tax is applied to
electricity. What utility does the household derive from this basket?
Step 5: What level of compensation must the government provide to the low-income
household to restore its welfare to the pre-tax level. Hint: The decomposition consumption
basket delivers the initial level of utility at the final prices.
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