In a landmark ruling that balances industrial incentives with fiscal prudence, the Supreme Court of India has upheld the State Government’s authority to modify or withdraw exemptions from electricity duty granted to captive power generators, while emphasising the need for a reasonable transition period to protect industries that relied on the concession.
The dispute arose from notifications issued by the State of Maharashtra under Section 5A of the Bombay Electricity Duty Act, 1958. For years, the State had encouraged industries to set up captive power plants by granting exemptions from electricity duty — first through a notification dated 1 September 1994, then superseded by one dated 30 October 1996. In 2000 and 2001, however, the State partially withdrew this benefit through fresh notifications dated 1 April 2000 and 4 April 2001. These changes allowed the State to levy duty on captive power consumption, with limited relief only for non-conventional sources or older plants set up under the pre-2000 policy.
Industry players, including Reliance Industries Ltd. and other captive power producers, challenged the notifications before the Bombay High Court, arguing that the sudden withdrawal was arbitrary, discriminatory, and violated the principles of promissory estoppel and legitimate expectation. They contended that they had made massive investments relying on the State’s earlier assurances of duty exemption. The High Court agreed, quashing the notifications in its judgments dated 5 October 2009 and 7 November 2009, holding them to be discriminatory and lacking justification.
The State of Maharashtra approached the Supreme Court in Civil Appeal Nos. 3012–3026 of 2010 (with connected appeals), contending that the power to grant exemption under Section 5A inherently includes the power to withdraw or modify it when required in public interest. The State argued that augmenting revenue to address budgetary deficits was a valid ground and that industries had no vested right to perpetual exemption.
Delivering the judgment on 25 March 2026, the bench comprising Justices Alok Aradhe and Pamidighantam Sri Narasimha carefully examined the legal position. The Court reaffirmed that an exemption under a fiscal statute is a concession, not a vested right. While the doctrine of promissory estoppel can apply against the Government, it must yield to overriding public interest — such as the need to manage public finances and reduce budgetary deficits. The Court noted that electricity duty is a significant source of revenue, and the Government must retain flexibility to recalibrate policy as economic circumstances demand.
Importantly, the Supreme Court held that judicial review in matters of economic policy is limited. Courts should not sit in appeal over the wisdom of such decisions unless they are manifestly arbitrary or based on extraneous considerations. The decision to withdraw the exemption was found to be a legitimate policy choice taken in the realm of fiscal administration.
However, the Court introduced an important safeguard rooted in the principles of fairness and legitimate expectation. It observed that industries had organised their operations and finances over several years on the strength of the exemption. Abrupt withdrawal without notice could cause undue hardship. Citing precedents on reasonable notice in policy reversals, the bench ruled that the impugned notifications dated 1 April 2000 and 4 April 2001 would take effect only after the expiry of one year from their respective dates. This one-year period, the Court held, would allow captive power generators sufficient time to reorganise their affairs and adjust financially.
Consequently, the Supreme Court allowed the State’s appeals, set aside the High Court’s judgments, and upheld the State’s power to withdraw or modify the exemption under Section 5A. The notifications were sustained but made prospective in operation after the one-year notice period. No order was passed as to costs.
This judgment provides much-needed clarity: while the State retains wide discretion to revisit fiscal concessions in public interest, it must exercise that power fairly and afford affected parties a reasonable opportunity to adapt.
Case Details Title: The State of Maharashtra & Others vs. Reliance Industries Ltd. & Others Case Nos.: Civil Appeal Nos. 3012–3026 of 2010 with Civil Appeal Nos. 3027–3029 of 2010 Court: Supreme Court of India
Bench: Justices Alok Aradhe and Pamidighantam Sri Narasimha
Judgment Date: 25 March 2026
Citation: 2026 INSC 296 (Reportable)
Click HERE for full Judgment.
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