Punjab State Electricity Board vs M/S. Siel Ltd. & Ors

The Supreme Court upheld the Punjab and Haryana High Court's decision to remand the tariff determination order of the Punjab State Electricity Regulatory Commission for reconsideration, emphasizing that the Commission failed to address relevant parameters such as cross-subsidization and cost of supply. The Court clarified that cross-subsidization is a tariff design issue and not a direct cost element, and that the Commission must ensure a rational approach in its tariff calculations under the Electricity Regulatory Commissions Act, 1998 and 2003. The outcome mandates the Commission to reassess the tariff while considering the observations made by the High Court.