Which statement best captures the goal of cap-and-trade systems?

Which statement best captures the goal of cap-and-trade systems?

• A. To ban all emissions outright.
• B. To raise revenue through taxes on emissions.
• C. To allow trading of permits so reductions occur where cheapest.
• D. To eliminate market mechanisms and rely solely on regulation.

Answer: (C)

The goal of cap-and-trade is to achieve a set pollution limit while letting permits be bought and sold so reductions happen where they’re cheapest. The cap fixes total emissions, and firms must hold enough permits to cover their emissions. If a firm can reduce emissions cheaply, it lowers its use of permits and sells the excess to others; if reducing is expensive, a firm buys permits instead. That trading reallocates emission reductions to the lowest-cost sources, making achieving the cap less costly overall. Over time, tightening the cap strengthens environmental goals, while permit prices reflect how costly abatements are. This approach relies on market mechanisms to deliver cost-effective environmental improvement, unlike outright bans or taxes, and it’s not about eliminating market tools.

The goal of cap-and-trade is to achieve a set pollution limit while letting permits be bought and sold so reductions happen where they’re cheapest. The cap fixes total emissions, and firms must hold enough permits to cover their emissions. If a firm can reduce emissions cheaply, it lowers its use of permits and sells the excess to others; if reducing is expensive, a firm buys permits instead. That trading reallocates emission reductions to the lowest-cost sources, making achieving the cap less costly overall. Over time, tightening the cap strengthens environmental goals, while permit prices reflect how costly abatements are. This approach relies on market mechanisms to deliver cost-effective environmental improvement, unlike outright bans or taxes, and it’s not about eliminating market tools.