A bench of Chief Justice G Rohini and Justice Rajiv Sahai Endlaw said PNGRB can fix and regulate the rates for transporting natural gas only by way of regulations.
It made it clear that the Board in exercise of its adjudicatory functions also cannot pass an order having the effect of determining and regulating transportation tariff.
"We accordingly hold that the PNGRB can exercise power of fixing the transportation rate, of regulating transportation rate and of laying down the transportation tariff and the manner of determining such tariff, only by Regulations.
The bench further said "the PNGRB can by making regulations in accordance with the PNGRB Act do what it has sought to do by framing the Model GTA guidelines and which has now been held to be not permissible.
"Without PNGRB doing so and in the absence of any regulations qua transportation tariff and the manner of determination thereof, PNGRB, in exercise of its adjudicatory functions, also cannot pass an order having the effect of regulating transportation tariff or manner of determination thereof."