The Supreme Court has delivered an important judgment on post facto (ex post facto) environmental clearance (EC) by striking down the 2021 Office Memorandum (OM) issued by the Ministry of Environment, Forest and Climate Change (MoEFCC). The Court held that prior environmental clearance remains the legal rule for all projects covered under the Environmental Impact Assessment (EIA) framework. At the same time, it clarified that limited post facto environmental clearance may be allowed only in exceptional cases involving overriding public interest through a valid statutory notification.
What is Post Facto Environmental Clearance?
Post facto (ex post facto) environmental clearance refers to granting environmental approval after a project has already started construction or operations without obtaining the mandatory prior clearance.
Under the Environment Impact Assessment (EIA) Notification, 2006, projects that can significantly affect the environment must obtain prior environmental clearance before any construction or operation begins. This enables authorities to assess environmental impacts, seek public feedback and prescribe safeguards before irreversible damage occurs.
Background of the Issue
India’s environmental clearance system is based on the principle that environmental impacts should be assessed before a project begins.
- The EIA Notification, 2006 made prior environmental clearance mandatory for specified projects.
- In 2017, the Central Government introduced a one-time, time-bound amnesty for projects that had already violated this requirement. Such projects were allowed to disclose violations, undergo environmental appraisal, pay environmental compensation, implement remediation measures and seek environmental clearance.
- In 2021, the MoEFCC issued an Office Memorandum (OM) that created a continuing mechanism for granting post facto environmental clearance without any cut-off date.
- Environmental organisations challenged the 2021 OM, arguing that it weakened environmental safeguards by allowing projects to obtain approval after violating the law.
Why Did the Supreme Court Strike Down the 2021 Office Memorandum?
The Supreme Court held that the 2021 Office Memorandum was legally invalid because it created a permanent system for regularising environmental violations through an administrative order.
The Court observed that:
- An Office Memorandum cannot amend or override the EIA Notification, 2006, which has statutory backing under the Environment (Protection) Act, 1986.
- The 2021 OM effectively created a permanent parallel system that allowed projects to routinely obtain environmental clearance after violating the law.
- Such a system diluted the mandatory requirement of prior environmental clearance and encouraged a “pollute first, seek approval later” approach.
Therefore, the Court struck down the 2021 Office Memorandum.
Why Was the 2017 Notification Upheld?
Unlike the 2021 Office Memorandum, the 2017 Notification was introduced as a one-time and time-bound amnesty to deal with projects that had already violated environmental clearance requirements.
The Supreme Court held that such a limited regularisation measure could be legally justified because it was intended to address existing violations under strict conditions rather than create a permanent mechanism.
Key Observations of the Supreme Court
- Prior environmental clearance remains the mandatory legal requirement before starting any project covered under the EIA framework.
- The 2021 Office Memorandum is unconstitutional because an executive order cannot replace or amend statutory environmental regulations.
- The 2017 Notification remains valid as a one-time amnesty for existing violations.
- Post facto environmental clearance cannot become a regular practice and should be allowed only in exceptional situations involving supervening public interest.
- Any future amnesty or regularisation scheme must be introduced through a statutory notification under the Environment (Protection) Act, 1986, and not through an administrative order.
- Future regularisation should be narrow, time-bound, well-reasoned and subject to strict environmental safeguards and supervision.
- Authorities should impose effective environmental compensation, remediation measures and deterrent action against violators, including responsible public officials wherever necessary.
Why Did the Court Not Completely Ban Post Facto Environmental Clearance?
The Court recognised that many projects had already been completed or had become operational before their violations were detected.
These included hospitals, airports, irrigation projects, common effluent treatment plants and other public infrastructure projects that provide essential public services. Demolishing or shutting down such projects could cause greater environmental, economic and social harm than allowing them to continue under strict environmental conditions.
Therefore, the Court held that post facto environmental clearance may be granted only in exceptional cases where:
- the project serves an overriding public interest;
- environmental damage can be adequately mitigated;
- strict environmental compensation and remediation measures are imposed; and
- approval is granted through a valid statutory notification.
Implications of the Judgment
- Reinforces prior environmental clearance as the foundation of India’s environmental governance.
- Prevents routine regularisation of projects that violate environmental laws.
- Strengthens the precautionary approach by ensuring environmental assessment before project implementation.
- Clarifies that executive instructions cannot replace statutory environmental regulations.
- Promotes greater accountability of regulatory authorities and project developers.
- Balances environmental protection with the need to safeguard essential public infrastructure in exceptional situations.
Supreme Court Verdict on Post Facto Environmental Clearance FAQs
Q1: What is post facto environmental clearance?
Ans: It is the grant of environmental clearance after a project has already begun construction or operations without obtaining the mandatory prior approval.
Q2: Why did the Supreme Court strike down the 2021 Office Memorandum?
Ans: The Court held that an administrative Office Memorandum cannot create a permanent system of retrospective environmental clearance or override the statutory EIA Notification, 2006.
Q3: Did the Supreme Court completely ban post facto environmental clearance?
Ans: No. The Court allowed limited post facto environmental clearance only in exceptional cases involving overriding public interest through a valid statutory notification.
Q4: Why was the 2017 Notification upheld?
Ans: Because it was a one-time, time-bound amnesty designed to deal with existing violations under strict conditions, unlike the continuing mechanism created by the 2021 Office Memorandum.
Q5: Why is this judgment important?
Ans: The judgment strengthens India’s environmental governance by reaffirming prior environmental clearance as the legal norm while permitting only limited, legally regulated exceptions in the larger public interest.
