Economics
Carbon Pricing Mechanisms and Emission Trading Systems
Quick fact
As of 2022, about 23% of global greenhouse gas emissions are covered by carbon pricing mechanisms, but the price is often too low to meet climate targets.
Why this is interesting
What if polluting the air came with a price tag? Would that change how we drive, heat our homes, and power our factories?
Read the full explanation
Understanding Carbon Pricing Mechanisms and Emission Trading Systems
Imagine a fee for every ton of carbon dioxide released into the atmosphere. That's the basic idea behind carbon pricing. It works by turning emissions into a cost that businesses and individuals must consider. There are two main ways to do this: a carbon tax, which sets a fixed price per ton, and an emission trading system (ETS), which sets a limit (cap) on total emissions and lets companies buy and sell permits to emit. Both create a financial incentive to reduce emissions, but they go about it differently.
A deeper explanation
Carbon pricing corrects a market failure: the 'externality' of pollution. Emitting CO2 damages the climate, but that damage isn't reflected in the market price of fossil fuels. By putting a price on carbon, polluters internalize that cost. A carbon tax provides price certainty, encouraging investment in cleaner technology. An ETS provides quantity certainty, ensuring a total emissions cap is met. Companies that can reduce emissions cheaply can sell their extra permits to those facing higher costs, achieving the cap at the lowest overall cost. The effectiveness depends on the price level and coverage.