CARBON TRADING

PRERNA FOR IAS

CARBON TRADING

1. Introduction to Carbon Trading

Carbon trading, also known as emissions trading, is a market-based mechanism designed to reduce greenhouse gas emissions. It places a financial cost on carbon dioxide and other pollutants, encouraging industries to lower their emissions. Under this system, companies that emit less than their permitted limit can sell their unused allowances to others. This creates an economic incentive for cleaner production and innovation. Carbon trading transforms environmental protection into a market-driven approach where reducing pollution becomes financially beneficial. It emerged as an important climate policy tool under international agreements and is widely used to support sustainable development and climate change mitigation.

2. The Science Behind Carbon Trading

Carbon trading is based on the need to reduce greenhouse gases such as carbon dioxide (CO₂), methane (CH₄), and nitrous oxide (N₂O). These gases trap heat in the Earth's atmosphere and contribute to global warming and climate change. Completely stopping industrial activity is not practical, so carbon trading offers a flexible solution. Instead of prescribing specific technologies, it sets limits on emissions and allows businesses to choose the most cost-effective methods for reducing pollution. This approach encourages innovation, efficiency, and investment in cleaner technologies while helping countries achieve environmental goals without severely affecting economic growth.

3. Core Concepts of Carbon Trading

Carbon trading operates through three key concepts: carbon credits, carbon allowances, and carbon offsets. A carbon credit generally represents the right to emit one tonne of carbon dioxide or its equivalent. Carbon allowances are permits distributed under regulatory systems that limit total emissions. Carbon offsets are emission reductions achieved elsewhere, such as through reforestation, renewable energy projects, or methane capture initiatives. Companies that reduce emissions beyond their targets can earn credits and sell them to others. Together, these mechanisms create a market that rewards environmental responsibility while ensuring that overall greenhouse gas emissions decrease over time.

4. Types of Carbon Markets

Carbon markets are broadly classified into compliance, voluntary, and international markets. Compliance markets are established by governments and require regulated industries to participate. Examples include emissions trading systems where companies must meet legal emission limits. Voluntary markets allow businesses and individuals to purchase carbon credits to offset emissions voluntarily. International carbon markets facilitate cooperation between countries through cross-border emission reduction projects. Each market serves a different purpose but shares the common goal of reducing greenhouse gas emissions. Together, these systems encourage global participation in climate action and provide flexible pathways for achieving environmental targets.

5. How Carbon Trading Works – Cap and Trade System