Ex-Post Facto Environmental Clearances: An Unsettled Question Before the Supreme Court

A Renewed Debate in Environmental Governance

The Supreme Court’s recent reconsideration of ex-post facto environmental clearances has brought renewed attention to a recurring issue in India’s environmental governance framework: whether projects that commence without mandatory environmental approval can later be regularised.

A split verdict on a review petition has revealed differing judicial approaches to this question. The debate reflects broader tensions between preventive environmental regulation and the practical challenges posed by large-scale infrastructure and development projects.

The Role of Prior Environmental Clearance

Under India’s environmental laws, certain categories of projects are required to obtain environmental clearance before construction or operations begin. This requirement is rooted in the precautionary principle, which emphasises anticipation and prevention of environmental harm rather than remediation after damage has occurred.

Prior clearance enables authorities to assess environmental impacts, impose conditions, and consider public concerns in advance. Retrospective or ex-post facto clearance, by contrast, allows projects to seek approval after activities have already begun, raising questions about the effectiveness of preventive regulation.

Background to the Dispute

The present legal controversy arose from executive measures intended to address projects that had commenced without prior environmental clearance. In 2017, the Ministry of Environment, Forest and Climate Change issued a notification granting a one-time opportunity for such projects to apply for post-facto approval. In 2021, this was followed by an office memorandum setting out a procedure for dealing with violation cases.

These measures were challenged before the Supreme Court. In Vanashakti v. Union of India, the Court set aside both the 2017 notification and the 2021 memorandum, holding that retrospective environmental clearance was inconsistent with the framework of environmental law and the requirement of prior appraisal.

A review petition against this decision resulted in a split verdict, reopening the issue.

Judicial Reasoning Supporting a Flexible Approach

One line of judicial reasoning supports a more flexible and proportional response to environmental violations. Reference is made to earlier Supreme Court judgments such as Common Cause v. Union of India and Alembic Pharmaceuticals Ltd. v. Rohit Prajapati, where the Court observed that ex-post facto environmental clearance is generally incompatible with environmental jurisprudence. At the same time, in those cases, the Court permitted continued operations subject to penalties, remediation measures, and compliance conditions.

Subsequent Supreme Court decisions, including Electrosteel Steels Ltd. v. Union of India, Pahwa Plastics Pvt. Ltd. v. Dastak NGO, and D. Swamy v. Karnataka State Pollution Control Board, have also allowed ex-post facto clearance in limited and exceptional circumstances.

This approach emphasises proportionality and practical consequences. It takes into account situations where projects are substantially complete or involve essential public infrastructure, and where closure or demolition could result in significant economic loss and additional environmental impact. Under this view, environmental violations may be addressed through penalties and corrective measures under the “polluter pays” principle, rather than through automatic closure in every case.

Judicial Reasoning Supporting Strict Compliance

The contrasting view stresses strict adherence to preventive environmental regulation. It relies on the principle articulated in Common Cause and Alembic that environmental clearance must precede project execution, and that retrospective approval undermines the precautionary principle.

According to this approach, the relief granted in those cases was confined to their particular facts and should not be treated as approval of ex-post facto clearances as a general practice. Later judgments permitting such clearances are viewed as inconsistent with established principles.

This reasoning also draws on the doctrine of non-regression, which holds that environmental protections should not be weakened over time. Allowing regularisation after violations, it is argued, risks diluting regulatory discipline and weakening compliance incentives. Economic considerations, from this perspective, cannot override statutory environmental requirements, particularly where environmental harm may be irreversible.

Implications for Environmental Regulation Going Forward

Beyond individual projects, the issue raises broader concerns for environmental governance. Permitting ex-post facto clearances, even in limited cases, may reduce the deterrent effect of prior environmental clearance requirements. At the same time, a rigid prohibition may create practical difficulties for projects already near completion, including public infrastructure.

By recalling its earlier ruling and restoring the matter for further consideration, the Supreme Court has left the central legal question unresolved. The issue of ex-post facto environmental clearance remains open, reflecting the continuing challenge of balancing environmental protection with developmental and administrative realities.

The eventual outcome will have significant implications for how environmental clearance operates in practice, and for the role of preventive regulation in India’s development process.