Multiple Choice
Which type of externality occurs when the social cost of an activity exceeds the private cost, leading to overproduction from a societal perspective?
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7. Externalities
Externalities: Social Benefits and Social Costs
Multiple Choice
Why can improvements in energy efficiency sometimes lead to an increase in overall energy use?
A
Because lower energy costs from efficiency encourage greater consumption, a phenomenon known as the rebound effect.
B
Because energy efficiency eliminates all externalities associated with energy consumption.
C
Because energy efficiency causes energy prices to rise, leading to increased use.
D
Because energy efficiency always reduces total energy demand regardless of consumer behavior.
Verified step by step guidance1
Step 1: Understand the concept of energy efficiency, which means using less energy to perform the same task or produce the same output.
Step 2: Recognize that improving energy efficiency effectively lowers the cost of using energy, since less energy is needed for the same activity.
Step 3: Learn about the rebound effect, which occurs when lower energy costs encourage consumers or firms to increase their energy use, partially or fully offsetting the energy savings from efficiency improvements.
Step 4: Analyze why this rebound effect can lead to an overall increase in energy consumption despite improvements in efficiency, due to increased demand or usage stimulated by lower effective energy costs.
Step 5: Conclude that energy efficiency does not always reduce total energy use because behavioral or economic responses to lower energy costs can increase consumption, illustrating the importance of considering the rebound effect.
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