This judgment addresses an appeal concerning the tariff applicable to a hydro power project and the payment of arrears for electricity supplied. The enhancment in tarrif without approval of Electricity Regulatory Commission not valid.
The appellant established a 3 MW hydel power plant in Sanjoin Nallah, Kullu, which was commissioned on August 5, 2004. A Power Purchase Agreement (PPA) for this 3 MW plant was executed on March 30, 2000, with an initial tariff of ₹2.50/- per kWh.
Capacity Expansion: The project was later expanded by an additional 1.90 MW, increasing the total capacity to 4.90 MW, commissioned on July 10, 2008. A supplementary PPA for the 1.90 MW capacity was approved conditionally by the Commission on December 4, 2007.
Dispute: The appellant sought an enhanced tariff of ₹2.95/- per kWh for the entire 4.90 MW project and arrears based on this enhanced tariff. The Himachal Pradesh Electricity Regulatory Commission (HPERC) initially rejected this petition on July 5, 2013.
Appellate Tribunal for Electricity (APTEL) Decision: APTEL, in its judgment dated October 17, 2014, allowed the appellant’s appeal to the extent of re-determining the tariff for the additional 1.90 MW plant and directed that a common tariff be determined for the power project as a whole, based on the weighted average of the respective tariffs for the 3 MW and 1.90 MW plants. APTEL noted that the 3 MW plant, commissioned prior to the 2007 Regulations, could not have its tariff re-determined under them, while the 1.90 MW plant would be governed by the 2007 Regulations.
Supreme Court Appeal: The current appeal was filed by M/s. KKK Hydro Power Limited under Section 125 of the Electricity Act, 2003, challenging the APTEL judgment.
Law Involved
Electricity Act, 2003:
Section 125: Grants the right to appeal to the Supreme Court from an order of the Appellate Tribunal for Electricity.
Section 86(1)(b): Empowers the State Commission to regulate electricity purchase and procurement processes from generating companies or licensees.
Himachal Pradesh Electricity Regulatory Commission (Power Procurement from Renewable Sources and Cogeneration by Distribution Licensee) Regulations, 2007 (Regulations of 2007): These regulations govern power procurement from renewable sources and were central to determining the applicable tariff for the expanded capacity.
Regulation 6: Deals with the power purchase agreement, including provisions for amendment and promotion of co-generation/renewable sources.
Reasoning
The Supreme Court noted that the Commission’s initial approval for the supplementary PPA dated December 4, 2007, was conditional, requiring the parties to finalize and execute the PPA in conformity with certain observations and the Regulations of 2007.
The Court highlighted that the parties failed to work out the terms and conditions of their PPA in accordance with the conditional consent and the Regulations of 2007, leading to confusion.
The supplementary PPA dated September 10, 2010, which sought the enhanced tariff, was found not to be in conformity with the provisions of the Regulations of 2007 to which it had accorded its aproval.
The Court affirmed that the State Commission has a statutory function to regulate electricity purchase and procurement, and the price of electricity is not solely a matter of private negotiation. It emphasized that the Commission is empowered to modify PPAs due to changes in statutory laws or State policy.
Specifically, the Court agreed with APTEL’s distinction: the 3 MW plant, commissioned in 2004, preceded the 2007 Regulations, so its tariff could not be re-determined under them. However, the 1.90 MW expansion, commissioned in 2008, was subject to these regulations.
The APTEL’s direction for a weighted average common tariff for the entire 4.90 MW project, considering the different regulatory frameworks for its components, was implicitly found to be a logical and fair approach.
The appellant’s claim for an enhanced tariff of ₹2.95/- per kWh for the entire 4.90 MW project, including the original 3 MW plant, was deemed “bereft of merit”.
Holding
The Supreme Court dismissed the appeal filed by M/s. KKK Hydro Power Limited.
The Court upheld the APTEL’s decision, effectively rejecting the appellant’s claim for an enhanced tariff of ₹2.95/- per kWh for the entire project and for arrears based on this enhanced tariff.
The APTEL’s approach of determining a weighted average common tariff for the combined 4.90 MW project (based on the original 3 MW and the additional 1.90 MW components) stands affirmed.
M/s KKK Hydro Power Limited v. Himachal Pradesh State Electricity Board Limited & Ors.
Supreme Court: 2025 INSC 1057 (DoJ 29-08-2025)




