
Contracts to ship have a various types.But the bulk of shipment contracts on a gas pipeline are based on long term contracts that is known Firm Transportation (FT) commitments.
An FT commitments is a long term contract ,usually between 10 to 20 years, to pay for capacity to be shiped by pipeline and the shipper is obliged to "ship or pay" whether or not shipment is actually occured.The concept of S.O.P on a gas pipeline is similar to concept of T.O.P in the LNG industry.
This commitment is essential for validity of pipeline project.Since it ensures the financiers from the ability of project to generate of sufficient revenue to cover the project debts.
Building a new pipline requires to getting the certificates before construction.the process to obtain this certificates starts with the sponsors of a new gas pipeline holdings that is called an initial open season.At the open season the pipeline entity makes a request for potential shippers that have a capability to ship a gas by pipeline and are interested in FT commitment.This process provide following important information for pipeline entity:
1-Is there enough interest for FT commitment to carry project ahead?
2-is there a need to modify the project from the technical or other aspects?
3-is there a enough interest for financiers to obtaining construction financing?