Promissory estoppel and limitation under electricity law clarified: conditional incentives, communication-based limitation, and no merger on dismissed review.

A conditional electricity incentive scheme with a fixed terminal date did not attract promissory estoppel because no unequivocal promise of indefinite continuation or proved detrimental change of position was shown. In an appeal confined to substantial questions of law, concurrent factual findings on the scheme's limited validity were not reopened absent perversity or a legal question. Limitation under the Electricity Act appellate provision runs from communication of the order, not its pronouncement. Dismissal of a review petition does not cause merger of the original appellate order, because merger arises only where review results in variation, substitution, or vacation of that order.

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Issues: (i) whether the withdrawal or modification of the electricity incentive scheme was barred by promissory estoppel; (ii) whether, in an appeal confined to substantial questions of law, concurrent findings on the limited validity of the scheme could be reopened; (iii) whether the period of limitation under Section 125 of the Electricity Act, 2003 runs from communication of the order or its pronouncement; and (iv) whether dismissal of a review petition causes merger of the original appellate order.

Issue (i): whether the withdrawal or modification of the electricity incentive scheme was barred by promissory estoppel.

Analysis: The incentive scheme itself carried a stipulated terminal point and was treated by the regulatory authorities as a limited and conditional benefit. The authorities further found that no unequivocal promise of indefinite continuation was made and that no proved alteration of position to the detriment of the consumers was established. The material placed at the review stage was also declined as belated. On those findings, the doctrine of promissory estoppel was held inapplicable.

Conclusion: The plea of promissory estoppel failed.

Issue (ii): whether, in an appeal confined to substantial questions of law, concurrent findings on the limited validity of the scheme could be reopened.

Analysis: The statutory appellate framework limited interference to substantial questions of law, and the Court treated the factual conclusions of the regulatory commission and the appellate tribunal as concurrent findings. Since those findings were neither shown to be perverse nor to give rise to any substantial question of law, they were not liable to be disturbed.

Conclusion: The concurrent findings were not reopened.

Issue (iii): whether the period of limitation under Section 125 of the Electricity Act, 2003 runs from communication of the order or its pronouncement.

Analysis: The Court construed the statutory language to mean that limitation begins from the date of communication of the decision or order, not from the date of pronouncement. It also distinguished the procedural steps relating to pronouncement and communication.

Conclusion: Limitation runs from communication of the order.

Issue (iv): whether dismissal of a review petition causes merger of the original appellate order.

Analysis: The Court distinguished a review that results in vacation, modification, or substitution of the original order from a review that is merely rejected. Where the review is dismissed and the original order remains unchanged, there is no merger of the original order with the order on review.

Conclusion: Dismissal of the review petition did not result in merger.

Final Conclusion: The challenge failed on merits, and the appeals were not entertained as no substantial question of law arose. The Court also clarified the governing principles on limitation under the appellate provision and on merger in the context of review proceedings.

Ratio Decidendi: In an appeal limited to substantial questions of law, concurrent factual findings will not be interfered with absent perversity, a conditional incentive scheme with a fixed terminal date does not attract promissory estoppel, limitation under the statutory appellate provision runs from communication of the order, and mere dismissal of review does not cause merger of the original order.

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