PRINCIPLES OF MACROECONOMICS (OER)
2nd Edition
ISBN: 2810023110024
Author: OpenStax
Publisher: XANEDU
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Textbook Question
Chapter 10, Problem 27RQ
What are the main components of the national savings and investment identity?
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3. Case 2) Coal plants exit, and Solar generation enters the market
Now, let's consider a scenario where the coal power plant (#1) shuts down and exits the market,
and a solar generation facility is constructed. The capacity of the solar generation facility is the
same as the coal power plant that went out of business. The generation capacities of this market
are shown below, along with their MC.
Table 3: Power Plant Capacity and Marginal Cost: Case 2
Plant #
Energy Source
Capacity (MW)
MC (S/MWh)
2
Oil
100
90
3
Natural Gas
500
50
4
Nuclear
600
0
5
Solar
300
5
Note that the solar plant (#5) can generate electricity only from 7 AM until 5PM. During these
hours, the plant can generate up to its full capacity (300 MW) but cannot generate any when
unavailable.
(a) Draw a supply curve for each hourly market (4AM, 10 AM, 2PM, 6PM).
(b) Find the market clearing prices and calculate how much electricity each power plant
generates in the hourly market (4AM, 10AM, 2PM, and 6PM).
(c) Find the…
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To analyze consumer spending, you must review the macroeconomic indicators of Personal Consumption Expenditures (PCE) and Retail Sales over the past year.
Selected Macroeconomic indicators
Personal Consumption Expenditures (PCE) measure the value of household goods and services consumed and are a key indicator of consumer spending.
- Retail Sales: This tracks the total receipts of retail stores and provides insight into consumer demand and spending trends.
- Patterns over the past year:
Personal Consumption Expenditures (PCE) Over the past year, PCE has steadily increased, reflecting consumer confidence and willingness to spend. The growth rate has been moderate, driven by wage growth, low unemployment rates, and government stimulus measures. However, inflationary pressures have also impacted real purchasing power, leading to a mixed outlook.
- Retail sales have also experienced fluctuations but have generally trended upwards. After a…
Chapter 10 Solutions
PRINCIPLES OF MACROECONOMICS (OER)
Ch. 10 - If foreign investors buy more U.S. stocks and...Ch. 10 - If the trade deficit of the United States...Ch. 10 - State whether each of the following events...Ch. 10 - In what way does comparing a countrys exports to...Ch. 10 - At one point Canadas GDP was 1,800 billion and its...Ch. 10 - The GDP for the United States is 18,036 billion...Ch. 10 - Why does the trade balance and the current account...Ch. 10 - State whether each of the following events...Ch. 10 - How does the bottom portion of Figure 23.3,...Ch. 10 - Explain the relationship between a current account...
Ch. 10 - Using the national savings and Investment...Ch. 10 - If a country is running a government budget...Ch. 10 - What determines the size of a countrys trade...Ch. 10 - If domestic Investment increases, and there is no...Ch. 10 - Why does a recession cause a trade deficit to...Ch. 10 - Both the United States and global economies are...Ch. 10 - For each of the following, indicate which type of...Ch. 10 - How did large trade deficits hurt the East Asian...Ch. 10 - Describe a scenario in which a trade surplus...Ch. 10 - The United States exports 14 of GDP while Germany...Ch. 10 - Explain briefly whether each of the following...Ch. 10 - If imports exceed exports, is it a trade deficit...Ch. 10 - What is included in the current account balance?Ch. 10 - In recent decades, has the U.S. trade balance...Ch. 10 - Does a trade surplus mean an overall inflow of...Ch. 10 - What are the two main sides of the national...Ch. 10 - What are the main components of the national...Ch. 10 - When is a trade deficit likely to work out well...Ch. 10 - Does a trade surplus help to guarantee strong...Ch. 10 - What three factors will determine whether a nation...Ch. 10 - What is the difference between trade deficits and...Ch. 10 - Occasionally, a government official will argue...Ch. 10 - A government official announces a new policy. The...Ch. 10 - If a country is a big exporter, is it more exposed...Ch. 10 - If countries reduced trade barriers, would the...Ch. 10 - Is it better for your country to be an...Ch. 10 - Many think that the size of a trade deficit is due...Ch. 10 - If you observed a country with a rapidly growing...Ch. 10 - Occasionally, a government official will argue...Ch. 10 - What is more important, a countrys current account...Ch. 10 - Will nations that are more involved in foreign...Ch. 10 - Some economists warn that the persistent trade...Ch. 10 - In 2001, the United Kingdoms economy exported...Ch. 10 - Imagine that the U.S. economy finds itself in the...Ch. 10 - Table 23.7 provides some hypothetical data on...Ch. 10 - Imagine that the economy of Germany finds itself...
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- 4. Case 3) Electricity demand increases due to increased EV adoption We will continue using the Case 2 supply curve (with the solar plant in operation) for this analysis. Suppose that electricity consumption from electric vehicles (EV) increases significantly. Consequently, electricity demand in the wholesale market increases at every hour. The new demand levels are shown in Table 5 below. The market operator has backup power plants (using natural gas) ready, with a total capacity of 300 MW and a MC of $100/MWh. Table 5: Hourly Demand (selected hours) Hour Demand (MWh) 4 AM 800 10 AM 1000 ... 2 PM 1100 ... 6 PM 1300 (a) Find the market clearing prices and calculate how much electricity each power plant generates in the hourly market (4AM, 10AM, 2PM, and 6PM). Is there a specific hourly market in which the market operator will need to dispatch backup generation? (b) Compare the Case 2 scenario with the Case 3 scenario in terms of CO2 emissions and average electricity price. Based on…arrow_forward2. Case 1) NG price decreases Now, suppose that the price of natural gas decreased substantially, causing the marginal cost of the NG power plant to decrease to MC = $35/MWh. The demand is the same as in Case 0. (a) Draw a new supply curve that reflects the MC change of the NG power plant. (b) Find the market clearing prices and calculate how much electricity each power plant generates in the hourly market (4AM, 10AM, 2PM, and 6PM). (c) What happened to the coal power plant? (d) Do you think the market outcomes (like average price) and the total CO2 emissions have improved under this Case 1 scenario (use the emissions data provided in the lecture slides)?arrow_forward1. Case 0) Baseline case Table 1: Power Plant Capacity and Marginal Cost: Case 0 Plant # Energy Source Capacity (MW) MC (S/MWh) 1 Coal 300 45 2 Oil 100 90 3 4 Natural Gas Nuclear 500 50 600 0 (a) Calculate the capacity mix of this market by energy source. (b) Draw a supply curve of this wholesale generation market. Table 2 below shows the demand levels for selected hours of a representative day. We will consider only these four hourly markets for our analysis. Note that the 6 PM demand is the highest demand level of the day. Table 2: Hourly Demand (selected hours) Hour Demand (MWh) 4 AM 500 10 AM 700 2 PM 800 6 PM 1000 (c) Find the market clearing prices and calculate how much electricity each power plant generates in the hourly market (4AM, 10AM, 2PM, and 6PM). (d) Find the average price of electricity (by taking a simple average of hourly prices; [P(4am) + P(10AM) + P(2PM) + P(6PM)]/4).arrow_forward
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