Engineers at a national research laboratory built a prototype automobile that could be driven 180 miles on a single gallon of unleaded gasoline. They estimated that in mass production the car would cost $40,000 per unit to build. The engineers argued that Congress should force U.S. automakers to build this energy-efficient car.

a. Is energy efficiency the same thing as economic efficiency?
b. Under what circumstances would the energy-efficient automobile described here be economically efficient?
c. If the goal of society is to get the most benefit from its limited resources, then why not ignore economic efficiency and build the energy-saving automobile?

a. Energy efficiency and economic efficiency are not the same thing. Energy efficiency refers to the ability of a system or device to convert energy input into useful output with minimal wasted energy. On the other hand, economic efficiency refers to the optimal allocation of resources to produce goods and services that maximize overall social welfare.

b. The energy-efficient automobile described here would be economically efficient under certain circumstances, such as when the benefits of reduced fuel consumption outweigh the additional costs of producing and maintaining the vehicle. If the price of gasoline is high and expected to remain high, and if there is a significant demand for energy-efficient vehicles in the market, then the economic benefits of producing and using such a car may outweigh the costs.

c. While the goal of society is indeed to get the most benefit from limited resources, it is not advisable to ignore economic efficiency. Economic efficiency ensures that resources are allocated in a way that maximizes overall social welfare. Ignoring economic efficiency could lead to misallocation of resources and potentially result in higher costs and reduced overall welfare. Therefore, it is important to consider economic efficiency alongside other factors, such as environmental sustainability, when making decisions about resource allocation and production.

a. Energy efficiency and economic efficiency are not the same thing. Energy efficiency refers to the ability of a system or product to perform its function using less energy. On the other hand, economic efficiency refers to the optimal allocation of resources to maximize overall welfare or benefit. While energy efficiency can contribute to economic efficiency by reducing costs and promoting sustainability, they are distinct concepts.

b. The energy-efficient automobile described here would be economically efficient under the following circumstances:
- If the cost of producing and operating the energy-efficient car is lower compared to conventional cars, resulting in cost savings for consumers.
- If the external costs associated with conventional cars, such as pollution and environmental damage, are factored in and the energy-efficient car proves to be less costly in terms of those externalities.
- If there is sufficient demand for the energy-efficient car, ensuring that it can be produced at scale and achieve economies of scale, driving down production costs.
- If the benefits of reduced energy consumption, such as reduced dependence on fossil fuels and lower greenhouse gas emissions, are valued by society and outweigh the higher initial costs of the energy-efficient car.

c. While the goal of society is to maximize benefit from limited resources, it is important to consider economic efficiency alongside other factors. Ignoring economic efficiency and solely focusing on energy savings could lead to misallocation of resources and unintended negative consequences. Economic efficiency takes into account factors like cost, benefit, and trade-offs, whereas energy efficiency alone may not capture the full picture. By considering economic efficiency, society can ensure that resources are allocated optimally to maximize overall welfare and address multiple objectives simultaneously.