The Supreme Court of India was seized of two civil appeals challenging a judgment and final order issued by the Appellate Tribunal for Electricity (APTEL) on 20th December 2019. The APTEL had dismissed appeals and affirmed an order from the Central Electricity Regulatory Commission (CERC) dated 20th March 2018. The core of the appeals involved Haryana Power Purchase Centre (HPPC) and others (Appellants) against GMR Kamalanga Energy Limited (GKEL) and others, including GRIDCO (Respondents).
The dispute originated from GKEL’s thermal power plant project in Odisha, which entered into Power Purchase Agreements (PPAs) to supply power, including to Haryana Utilities and Bihar Utilities. A significant part of the contention revolved around GKEL’s claims for compensation arising from ‘Change in Law’ events, such as increased coal royalty, excise duty, and shortfalls in firm linkage coal, and how these costs were to be allocated among the beneficiary distribution companies (DISCOMs). The CERC had previously addressed GKEL’s petitions for tariff adjustments and compensation, disallowing several claims related to input prices, rail freight, Minimum Alternate Tax (MAT), and Value Added Tax (VAT). Both Haryana Utilities and GRIDCO had contested GKEL’s compensation claims.
Law Involved: The legal framework underpinning this judgment primarily includes the Electricity Act, 2003:
Section 63: Pertaining to the determination of tariff through competitive bidding processes.
Section 79(1)(b) and (f): Empowering the CERC with regulatory functions and the authority to adjudicate disputes involving generating companies and transmission/distribution licensees.
Section 125: Stipulating that appeals to the Supreme Court are permissible only if they involve a “substantial question of law”. Additionally, the Code of Civil Procedure, 1908 (Section 100), which also deals with appeals based on “substantial questions of law,” was referenced in the context of the appeal’s tenability. Relevant tax legislation like the Finance Act 2010 and 2012 were implicitly relevant to the compensation claims for excise duty, MAT, and VAT.
Reasoning: The Supreme Court emphasised its general principle of restraint in interfering with concurrent findings of fact by expert bodies such as the CERC and APTEL, especially when these findings are supported by sound reasoning. However, the Court also clarified that intervention becomes necessary if these decisions are found to be perverse, arbitrary, or in violation of statutory provisions, or if they are based on extraneous considerations, or if mandatory statutory provisions are overlooked. The Court considered its previous rulings in cases such as Energy Watchdog v. Central Electricity Regulatory Commission and Maharashtra State Electricity Distribution Company Limited v. Adani Power Maharashtra, which have established precedents regarding ‘Change in Law’ events. It was noted that Haryana Utilities’ arguments demonstrated an inconsistency, described as “approbation and reprobation”. The Court reiterated that for an appeal to be maintained under Section 125 of the Electricity Act, 2003, it must genuinely raise a “substantial question of law”.
Holding: The Supreme Court dismissed both Civil Appeal No. 1929 of 2020 (filed by Haryana Utilities and others) and Civil Appeal No. 3429 of 2020 (filed by GRIDCO and others). Consequently, the judgment and final order of the Appellate Tribunal for Electricity (APTEL) dated 20th December 2019, which had dismissed the original appeals and upheld the Central Electricity Regulatory Commission’s (CERC) order, was affirmed. All pending applications related to these appeals were also disposed of.
Haryana Power Purchase Centre (HPPC) And Others Vs GMR Kamalanga Energy Limited And Others
Supreme Court: 2025 INSC 1079: (DoJ 08-09-2025)



