Powergrid Corporation of India Limited (Appellant), a public sector undertaking engaged in power transmission, appealed against orders related to its transmission charges. The dispute arose between April and May 2006, when three Inter-connecting Transformers (ICTs) in Powergrid’s Rihand I transmission system failed due to internal faults (machinery breakdown leading to fire) during a period of high demand [4, 10, 18.2, 19, 25]. Powergrid promptly replaced these ICTs by diverting existing ones and procuring new ones. Subsequently, Powergrid sought “additional capitalization” for these replacements and “de-capitalization” for the diverted transformers, along with a revised availability certificate to claim full transmission charges and incentives, under the Central Electricity Regulatory Commission (Terms and Conditions of Tariff) Regulations, 2004.
The Central Electricity Regulatory Commission (CERC) dismissed Powergrid’s claims, holding that the replacement cost was covered by Powergrid’s internal self-insurance reserve and did not constitute additional capitalization. This decision was upheld by the Appellate Tribunal for Electricity, which dismissed Powergrid’s appeals. Powergrid then appealed to the Supreme Court of India.
Law Involved The primary legal framework involved the Electricity Act, 2003, specifically Section 125 (allowing appeals to the Supreme Court) and Section 178 (CERC’s power to make regulations). Central to the dispute were the Central Electricity Regulatory Commission (Terms and Conditions of Tariff) Regulations, 2004 (referred to as ‘Tariff Regulations’), particularly Regulation 53, which governs “Additional Capitalization”. The Court also considered the principle of “proximate cause” in interpreting the coverage of Powergrid’s self-insurance policy, drawing upon precedents like New India Assurance Company Limited Vs. Zuari Industries Limited.
Reasoning The Supreme Court addressed two core questions:
Justification for Additional Capitalization: The Court meticulously analyzed Regulation of the Tariff Regulations. It concluded that the replacement of the damaged ICTs did not qualify for additional capitalization under the Regulation. The Court reasoned that these ICTs were not “old assets” requiring replacement after being fully written off, nor did their replacement constitute “additional work” beyond Powergrid’s essential duty to maintain a “healthy transmission system”. Therefore, the CERC and Appellate Tribunal were justified in rejecting Powergrid’s claim for additional capitalization.
Coverage of Self-Insurance Policy: The Court examined Powergrid’s self-insurance policy, which covered “machinery breakdown and fire risk”. Applying the “proximate cause” principle, the Court found that the internal machinery breakdown led to a fire, and this fire was the proximate cause of the ICTs’ damage. Since the policy covered losses from fire, even if caused by machinery breakdown, the Court determined that Powergrid’s self-insurance policy did indeed cover the cost of replacing the damaged ICTs. Consequently, the Appellate Tribunal was justified in directing Powergrid to fund the replacement from its self-insurance reserve as part of its Operation and Maintenance expenses.
The Court also noted that the Appellate Tribunal had “virtually rubber stamped” findings from a different case without sufficient basis, though this particular observation did not affect the outcome of the current appeals.
Holding The Supreme Court dismissed both civil appeals filed by Powergrid Corporation of India Limited. The Court upheld the decisions of the Appellate Tribunal for Electricity and the Central Electricity Regulatory Commission, thereby confirming that Powergrid’s claims for additional capitalization were unfounded and that the cost of replacing the damaged ICTs was appropriately covered by its self-insurance policy.
Powergrid Coporation Of India Limited V. Central Electricity Regulatory Commission And Others
Supreme Court: 2025 INSC 626: (DoJ 05-05-2025)




