Shares of Petronet LNG plunged 8.5 per cent during intra-day trading on Thursday, January 2 following critical remarks by the Petroleum and Natural Gas Regulatory Board over tariff-related practices. Regulatory Scrutiny Intensifies PNGRB accused Petronet LNG of exploiting gas consumers through excessive tariff hikes at its Dahej terminal despite increasing capacity and utilisation. A PNGRB discussion paper stated, “Rising charges …