Doctrine of Inter-Generational Equity — Environmental Law Notes

Doctrine of Inter-Generational Equity

Imagine the earth’s forests, rivers and minerals as a family inheritance held in a single account — but an account shared not only with everyone alive today, but with everyone yet to be born. If this generation empties it, our great-grandchildren inherit nothing. That image is the whole of inter-generational equity: we did not receive the planet as owners free to spend it, but as trustees bound to pass it on intact.

What is inter-generational equity?

Inter-generational equity [fairness between generations] means that the present generation holds the natural and cultural resources of the earth in trust for future generations, and must not exhaust or degrade them beyond repair. It is the moral core of sustainable development (Unit 3): development today must not rob tomorrow. Distinguish it from its twin, intra-generational equity [fairness within the present generation — between rich and poor today]; the two together make up equity in environmental law.

The Supreme Court gave the doctrine concrete content in Common Cause vs Union of India (2017), where it struck down reckless mining in Odisha and laid down three principles of conservation that make the idea practical:

1. Conservation of options — conserve the diversity of the natural resource base so that future generations still have the same range of choices we have; do not narrow their options.
2. Conservation of quality — leave the planet in a condition no worse than we received it, so future generations inherit a comparable quality of environment.
3. Conservation of access — ensure future generations have equitable access to the resource base, just as the present generation does.

The principle is not merely rhetorical; the courts use it to justify limits on mining, deforestation and over-exploitation. In Goa Foundation vs Union of India the Court tied the ceiling on iron-ore excavation directly to sustainable development and inter-generational equity, and in the nuclear-power case G. Sundarrajan vs Union of India (2013) it listed inter-generational equity among the principles a major project must satisfy.

Supreme Court in Common Cause vs Union of India (2017) (the three conservation principles, close paraphrase): to maintain inter-generational equity the present generation must conserve the diversity of the natural resource base (conservation of options), not leave future generations a planet of worse quality than it enjoys (conservation of quality), and assure them equitable access to that resource base (conservation of access).

In Simple Terms: We are borrowing the earth from our children. So we must leave them the same variety of resources, the same quality of environment, and the same access to nature that we enjoy. Using up everything today, and leaving them a degraded planet, is a breach of that trust.

🧩 WORKED EXAMPLE — reckless mining and the future

Facts. A State permits unrestrained mining that strips its hills of ore within a generation, leaving polluted streams and exhausted land for those who come after. Is this lawful?

Rule. Inter-generational equity requires the present generation to conserve the options, quality and access of the natural resource base for future generations; unrestrained exploitation that exhausts a resource breaches this principle (Common Cause vs Union of India, 2017).

Apply. Mining at a rate that empties the resource and degrades the streams destroys the options, quality and access of the coming generation. The State, as trustee, cannot allow present profit to consume the inheritance of the future.

Conclusion. The unrestrained mining is contrary to inter-generational equity; the Court can impose a ceiling and a fresh, sustainable mining policy — exactly what it did in Common Cause.

flowchart TD
    ROOT["Inter-Generational Equity<br/>hold resources in trust for the unborn"]:::root
    ROOT --> A["Conservation of OPTIONS<br/>keep the diversity of resources"]:::leaf
    ROOT --> B["Conservation of QUALITY<br/>leave the planet no worse"]:::leaf
    ROOT --> C["Conservation of ACCESS<br/>equitable access for the future"]:::leaf
    ROOT --> D["Twin idea: intra-generational equity<br/>(fairness among people today)"]:::diamond
    A --> E["Applied: Common Cause, 2017<br/>(mining ceiling)"]:::leaf
    classDef root fill:#FFF8DC,stroke:#000,stroke-width:1px,color:#000;
    classDef leaf fill:#E6F3FF,stroke:#1E3A8A,color:#000;
    classDef diamond fill:#FDECEA,stroke:#B22222,color:#000;
    linkStyle default stroke:#888,stroke-width:1px;

Case Laws

• Common Cause vs Union of India (2017) — laid down the three conservation principles (options, quality, access) and curbed reckless mining in Odisha to maintain inter-generational equity.
• G. Sundarrajan vs Union of India (2013) — inter-generational equity is among the principles a major project (the Kudankulam nuclear plant) must satisfy.
• Goa Foundation vs Union of India (2014) — tied a ceiling on iron-ore mining to sustainable development and inter-generational equity.

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