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Supreme Court Upholds Prohibition on Ex Post Facto Environmental Clearance in Environmental Law Case. Prior Environmental Clearance Under Environment (Protection) Act, 1986 and EIA Notification 2006 is Mandatory; Ex Post Facto Clearance Ultra Vires.

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2026-07-18 20:44:39

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Case Details

2025 INSC 718

Writ Petition (C) No.1394 of 2023

2025-01-01

Abhay S. Oka

2025 INSC 718

Vanashakti

Union of India

Nature of Litigation

Writ petitions challenging the validity of ex post facto environmental clearance under the Environment (Protection) Act, 1986

Remedy Sought

Quashing of the 2017 notification and 2021 Office Memorandum, and direction to prohibit ex post facto environmental clearance

Filing Reason

Allegation that ex post facto clearance is arbitrary, illegal, and ultra vires the Act

Previous Decisions

Madras High Court quashed the 2021 OM but gave prospective effect; appeal against prospective effect

Issues

Whether ex post facto environmental clearance is permissible under the Environment (Protection) Act, 1986 and EIA Notification 2006 Whether the 2017 notification and 2021 OM are ultra vires the Act

Submissions/Arguments

Petitioners argued that ex post facto clearance defeats the purpose of prior environmental assessment and encourages violations Respondent argued that the 2017 notification was a one-time measure and necessary for regularization

Ratio Decidendi

The EIA Notification 2006 mandates prior environmental clearance before commencement of any project. Ex post facto clearance is not permissible under the Environment (Protection) Act, 1986 as it undermines the object of preventing environmental harm. Any violation must be penalized under Section 15, not regularized.

Judgment Excerpts

Part IV-A of the Constitution of India containing fundamental duties as set out in Article 51A was incorporated in the Constitution by the 42nd Amendment Act with effect from 3rd January 1977. The EIA notification was issued on 14th September 2006. It provided that the projects or activities mentioned in clause (2) thereof shall require prior Environmental Clearance (for short, ‘the EC’) from the concerned regulatory authority. The 2017 notification provided that in case of such works, ex post facto EC can be granted.

Procedural History

The matter originated from writ petitions filed in the Supreme Court challenging the 2017 notification and 2021 OM. The Madras High Court had earlier quashed the 2021 OM but gave prospective effect. Appeals were filed against the prospective effect. The Supreme Court heard all matters together and delivered this judgment.

Acts & Sections

Environment (Protection) Act, 1986: Section 3, Section 15
Environment (Protection) Rules, 1986: Rule 5
Constitution of India: Article 21, Article 51A

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Supreme Court Upholds Prohibition on Ex Post Facto Environmental Clearance in Environmental Law Case. Prior Environmental Clearance Under Environment (Protection) Act, 1986 and EIA Notification 2006 is Mandatory; Ex Post Facto Clearance Ultra Vires.

Case Details

Nature of Litigation

Remedy Sought

Filing Reason

Previous Decisions

Issues

Submissions/Arguments

Ratio Decidendi

Judgment Excerpts

Procedural History

Acts & Sections

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