Environmental Economics – Key Concepts
🟠 Topic 76: Environmental Economics – Key Concepts
📌 Introduction
Environmental Economics deals with the study of how economic activities affect the environment and how environmental policies can be designed to address pollution, resource depletion, and climate change. It aims to balance economic growth with environmental sustainability by integrating environmental costs into economic decision-making.
With climate change, resource depletion, and pollution becoming global crises, environmental economics plays a crucial role in shaping green policies, carbon pricing, and sustainable development strategies.
🔹 Key Concepts in Environmental Economics
1️⃣ Externalities
📖 Definition
An externality refers to the unintended side effect of economic activity that affects third parties who are not directly involved in the activity.
| Type | Example |
|---|---|
| Negative Externality | Industrial pollution harming nearby residents |
| Positive Externality | Solar power installation reducing carbon emissions |
2️⃣ Public Goods
📖 Definition
Public goods are goods that are non-excludable (cannot stop someone from using) and non-rivalrous (one person’s use does not reduce availability to others).
| Example | Type |
|---|---|
| Clean air | Public good |
| Biodiversity conservation | Public good |
🔔 Environmental goods are often public goods, leading to overexploitation (tragedy of commons).
3️⃣ Tragedy of Commons
📖 Definition
Overuse and depletion of common property resources because individuals act in their self-interest, ignoring the collective impact.
| Example | Resource |
|---|---|
| Overfishing in oceans | Marine resources |
| Deforestation of public forests | Forest resources |
4️⃣ Polluter Pays Principle (PPP)
📖 Definition
The polluter must bear the cost of preventing, controlling, and remediating environmental damage caused by their activities.
✅ Incorporated in India’s Environmental Protection Act, 1986 and endorsed by the Supreme Court in various judgments.
5️⃣ Sustainable Development
📖 Definition
Development that meets the needs of the present without compromising the ability of future generations to meet their needs.
✔️ Balances:
- Economic growth.
- Social equity.
- Environmental protection.
🔔 Guided by the Sustainable Development Goals (SDGs).
6️⃣ Environmental Kuznets Curve (EKC)
📖 Concept
EKC hypothesizes that:
- Environmental degradation rises with economic growth at initial stages.
- After a certain income level, environmental degradation declines as society invests in cleaner technology and regulations.
| Phase | Description |
|---|---|
| Low income | High pollution (industrialisation) |
| Middle income | Peak pollution |
| High income | Pollution reduction (green tech, regulations) |
🔹 Methods for Environmental Valuation
1️⃣ Direct Valuation – Market Prices
✔️ Estimates environmental values based on actual market transactions. ✔️ Example: Price of timber in forests.
2️⃣ Indirect Valuation – Non-market Methods
| Method | Example |
|---|---|
| Contingent Valuation Method (CVM) | Survey people’s willingness to pay for cleaner air |
| Travel Cost Method (TCM) | Value of eco-tourism by estimating travel expenses |
| Hedonic Pricing | Property prices near clean vs polluted areas |
3️⃣ Cost-Benefit Analysis (CBA)
✔️ Compares economic benefits of a project with environmental costs. ✔️ Helps evaluate:
- Infrastructure projects (dams, highways).
- Pollution control investments.
🔹 Market-Based Instruments in Environmental Policy
1️⃣ Pollution Taxes
✔️ Charges polluters based on amount of pollution emitted. ✔️ Encourages adoption of cleaner technology.
| Example | Sector |
|---|---|
| Carbon tax | Energy, transport |
| Plastic tax | Manufacturing, packaging |
2️⃣ Tradable Pollution Permits (Cap-and-Trade)
✔️ Government sets emission cap. ✔️ Polluters receive tradable emission permits. ✔️ Firms can trade permits, rewarding efficient polluters.
| Example | Scheme |
|---|---|
| EU Emission Trading Scheme (ETS) | European carbon market |
3️⃣ Green Subsidies
✔️ Government provides incentives for clean technology adoption. ✔️ Examples:
- Subsidies for electric vehicles (EVs).
- Incentives for renewable energy (solar, wind).
🔹 Environmental Accounting & Green GDP
📖 Concept
Green GDP adjusts traditional GDP by accounting for:
- Environmental degradation.
- Depletion of natural resources.
- Environmental remediation costs.
✅ Helps track sustainable economic progress.
India’s Initiative – Environmental Accounting
✔️ The System of Environmental-Economic Accounting (SEEA) framework adopted. ✔️ Combines economic and environmental data for policy-making.
Case Study – India’s Plastic Waste Management
- Plastic waste increased from 1.5 million tonnes (2000) to 3.5 million tonnes (2020).
- Measures taken: ✔️ Extended Producer Responsibility (EPR) for plastic producers. ✔️ Banned single-use plastics (2022). ✔️ Promoting recycling industries.
🔹 Role of Environmental Economics in Policy-Making
| Area | Contribution |
|---|---|
| Environmental Impact Assessments (EIA) | Cost-benefit analysis of projects |
| Climate Change Mitigation | Carbon pricing, emission trading |
| Pollution Control | Pollution taxes, cap-and-trade |
| Sustainable Development Goals | Integrates economy-environment linkages |
🔹 Global Agreements & Environmental Economics
| Agreement | Focus |
|---|---|
| Kyoto Protocol (1997) | Emission reduction targets for developed countries |
| Paris Agreement (2015) | Global climate targets (limit warming to 1.5°C) |
| Montreal Protocol (1987) | Protect ozone layer by phasing out CFCs |
| Convention on Biological Diversity (CBD) | Conservation and sustainable use of biodiversity |
India’s Commitments
✔️ Reduce emission intensity by 45% by 2030 (relative to 2005).
✔️ Achieve net-zero emissions by 2070.
✔️ 500 GW of non-fossil fuel capacity by 2030.
📚 Practice MCQ
1️⃣ Which of the following represents a negative externality in environmental economics?
✅ Options:
(a) Solar power reducing emissions
(b) Industrial pollution affecting nearby villages
(c) Afforestation increasing biodiversity
(d) Eco-tourism generating local employment
2️⃣ Which environmental economic principle is reflected in the “Polluter Pays Principle”?
✅ Options:
(a) Free rider problem
(b) Internalisation of externalities
(c) Tragedy of commons
(d) Pareto optimality
3️⃣ In the Environmental Kuznets Curve (EKC), what happens to environmental degradation as income rises after a certain point?
✅ Options:
(a) It continuously rises
(b) It starts falling
(c) It remains constant
(d) It fluctuates randomly
