Section 18(2)(h) in The Petroleum and Natural Gas Regulatory Board (Authorizing Entities to Lay, Build, Operate or Expand Natural Gas Pipelines) Regulations, 2008
(h)the booking of the capacity in the natural gas pipeline should be equal to at least fifty percent of the sum of the own capacity requirements of the entity and firmed-up contracted capacity and the agreements in this regard should have been entered in a transparent manner and based on the principle of at an arm's length;