环境经济Final Exam代写 Environmental Economics

Environmental Economics (EC 434:534)
Final Exam Practice Questions — SOLUTION KEY
Grant R. McDermott

环境经济Final Exam代写 How much SO2 does each power plant abate in equilibrium after trading is completed? What is the corresponding permit price

1 Multiple choice questions (3 points each)  环境经济Final Exam代写

Please circle the correct answer for each question. If you make a mistake or wish to change your answer, please unambiguously cross out the incorrect choice and circle your new answer.


  1. The concept of “Gamma discounting”
    (a) is relevant to cases where there is disagreement over the true discount rate.
    (b) implies that the effective discount rate should be declining over time.
    (c) reflects the fact that man-made and natural goods are imperfect substitutes.
    (d) Answers (a) and (b) are both correct.
    (e) Answers (a), (b), and (c) are all correct.


  2. Which is not a potential source of inefficiency for command-and-control pollution regulation?
    (a) The assumption of sharp thresholds in damages (e.g. related to human health).
    (b) Negligible costs associated with non-attainment imply no incentives to comply.
    (c) Uniform standards imposed across wide geographies.
    (d) Inability to account for temporal variation (e.g. pollution by time of day or season).
    (e) Emphasis on “end-of-pipe” control technologies as opposed to pollution prevention.


  3. A fuel efficiency standard like that imposed by the US Corporate Average Fuel Economy (CAFE) initiative
    (a) only targets newly manufactured vehicles and thus can take a long time to impact the overall fuel economy of a county’s car fleet.
    (b) is mistaken in its assumption that motorists underestimate savings from efficiency gains.
    (c) avoids the rebound effect.
    (d) ignores potential spillover benefits like reduced dependence on foreign oil.
    (e) All of the above.


  4. An advantage of cap-and-trade is that it encourages investment in new technologies by ensuring a stable permit price.
    (a) True.
    (b) False.


  5. Recent empirical evidence does not offer much support for the Environmental Kuznets Curve.
    (a) True.
    (b) False.

2 Part 2: Longer questions

2.1 The Ramsey Rule

Nicholas Stern used the so-called “Ramsey Rule” to derive an unusually low social discount rate of 1.4% in his influential Review on the Economics of Climate Change (2006). Write out the Ramsey Rule formula. (25%) Name the various input parameters in this formula and give a very brief, intuitive description of their respective roles. (75%)

2.2 Mobile air pollution  环境经济Final Exam代写

Give three reasons that electric vehicles could be viewed as environmentally-friendly, even though they require electricity. (75%) Give one reason that autonomous vehicles might help to reduce pollution in the future. (25%)

3 Analysis questions
3.1 Cap-and-trade

Consider an island in which all electricity is provided by two coal-fired power plants. Unfortunately, while the production of electricity brings important benefits to the island community, it also results in the release of SO2 emissions that are causing harmful acid rain and related human health issues.

To fix these problems, island officials decide to implement a tradeable permit system, where each permit is worth one tonne of SO2. The total cap is set equivalent to 20 tonnes of SO2 abatement and the initial permit allocation is divided equally among the plants (i.e each plant received 10 permits). The respective marginal abatement costs of the two plants, in terms of dollars per Ai tonnes, are as follows:

环境经济Final Exam代写

3.1.1 How much SO2 does each power plant abate in equilibrium after trading is completed? What is the corresponding permit price?

3.1.2 Now, consider an alternative scenario in which the regulator had instead decided to reach the abatement target by imposing a uniform abatement standard of 10 tonnes each. What is the
corresponding marginal abatement cost for each plant under this uniform standard, where no trading is allowed?

3.1.3 Sketch a simple figure of this problem in the style of the “bathtub” diagram that we practiced in class. Make sure to highlight the following: i) The equilibrium permit price and abatement
quantities of the two plants under the tradeable permit system. ii) The marginal abatement costs of each plant under the uniform abatement standard. iii) The regions corresponding to the
gains from trade that each plant experiences under the permit system relative to the uniform abatement standard

环境经济Final Exam代写

3.1.4 Now, calculate the gains from trade that each power plant experiences due to the tradeable permit system relative to the uniform abatement standard.

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