New Delhi: The Retrospective Environmental Clearance issue has once again come under the Supreme Court’s scrutiny. In a major judgment, the apex court ruled that the Central government cannot grant retrospective environmental clearances through an Office Memorandum (OM). The Court said such approvals can only be granted through a valid notification issued under the Environment (Protection) Act 1986, and only in exceptional circumstances.
Retrospective Environmental Clearance: What Did The Supreme Court Decide
A Bench led by Chief Justice Surya Kant, along with Justices Joymalya Bagchi and Vipul M. Pancholi, struck down the Central government’s 2021 Office Memorandum (OM) that created a process for granting retrospective environmental clearances (ECs) to projects that had already started without prior approval.
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The Court said the 2021 OM changed the legal framework established under the Environmental Impact Assessment (EIA) Notification, 2006, which requires projects to obtain environmental clearance before construction begins.
Why Did The Court Strike Down The 2021 OM on Retrospective Environmental Clearance
The Supreme Court observed that an Office Memorandum is only an administrative instruction and cannot replace or modify a legal notification issued under the Environment (Protection) Act. According to the Court:
- The 2021 OM created a “perpetual amnesty” for projects that violated environmental rules.
- It did not provide a reasonable method for selecting projects eligible for retrospective clearance.
- It weakened the precautionary principle and sustainable development principles under environmental law.
Can Retrospective Environmental Clearance Still Be Granted
Yes, but only in limited situations. The Supreme Court clarified that the Central government still has the power to grant ex post facto or retrospective environmental clearances in exceptional public interest cases. However, this must be done through a proper notification issued under Section 3 of the Environment (Protection) Act, 1986, and not through an Office Memorandum.
What Happens To Existing Environmental Clearances
The Court made it clear that environmental clearances already granted under the 2017 Notification or the 2021 Office Memorandum will continue to remain valid unless they are individually challenged in accordance with law. However, no new applications for retrospective environmental clearance under the 2017 Notification or the 2021 OM will be accepted.
Background Of The Retrospective Environmental Clearance Case
The judgment came while deciding a review petition in the Vanashakti v. Union of India case. In May 2025, the Supreme Court had ruled that projects could not legally begin without prior environmental clearance and had struck down both the 2017 Notification and the 2021 OM.
Later, in November 2025, the Court reviewed that decision after petitions, including one by CREDAI, argued that cancelling retrospective clearances would severely affect the real estate sector and other infrastructure projects. The latest ruling balances environmental protection with limited legal flexibility by allowing retrospective clearances only through a valid statutory notification.
Why This Judgment Matters
The ruling strengthens the principle that environmental approvals should normally be obtained before a project begins.
It also ensures that administrative orders cannot override environmental laws passed under the Environment (Protection) Act, while leaving room for the government to address exceptional situations through legally valid notifications.
