Externalities are costs or benefits not reflected in market prices. Which of the following best illustrates energy-related externalities?

• A. Subsidies funded by the government.
• B. Externalities are costs or benefits not reflected in market prices; examples: air pollution health costs and climate damages.
• C. Total costs of production.
• D. Externalities are only positive effects included in price.

Answer: (B)

Externalities are costs or benefits not reflected in market prices. In energy, the emissions from burning fossil fuels create air pollution and climate damages that society pays for in health costs, lost productivity, and costly climate impacts, yet these social costs aren’t included in the price of energy. That makes this example the best illustration because it shows how energy use imposes hidden costs on others that the market fails to price in. Subsidies are government policy, not unpriced effects; total production costs are explicit expenses; and externalities can be both negative and positive and are not automatically reflected in price.