Following the move, Indraprastha Gas Ltd's scrip jumped 16.47 per cent to Rs 486.65 at the BSE.
On the NSE, it climbed 17.75 per cent to Rs 492 -- its 52-week high.
A bench headed by Justice Dipak Misra rejected the appeal of Petroleum and Natural Gas Regulatory Board (PNGRB) that it has the right to determine the prices of compressed natural gas (CNG) and piped natural gas (PNG).
It came on a plea by IGL which contended that the PNGRB did not give it a hearing and calculated the tariff on the basis of the 2008 price levels for various inputs and charges.
IGL had pleaded against the regulatory board's decision to regulate its network tariff and selling price.
The board, in its order, had asked IGL to cut down its network tariff by 63 per cent with retrospective effect.