Modeling Multi-Asset Transition Basis Risk across Illiquid Commodity Delivery Points
Transition basis risk at illiquid delivery points requires dynamic locational pricing and physical throughput options rather than paper index hedging.
Fuel Retention Rate
Meaning
An operational percentage in pipeline transport contracts represents the portion of the shipper’s natural gas that the pipeline operator retains to fuel the compressors and run the transmission system. This fuel retention rate is subtracted from the total volume injected into the pipeline, meaning the volume delivered at the delivery point is always lower than the volume received at the inlet. This transaction cost must be factored into the overall netback price of the commodity.
Tariff Structure
Operators publish their recovery percentages periodically in their tariff sheets, adjusting them to reflect seasonal changes in compressor usage. The fuel retention rate varies by zone and route, with longer transport distances generally requiring higher retention percentages. Shippers use these published tariffs to calculate the landed cost of their gas before initiating transactions.
Operational Impact
High throughput on a pipeline increases the workload of the compressors, which can lead to higher fuel consumption. This operational reality means that the fuel retention rate is higher during periods of peak demand, directly increasing the transport cost for shippers. This mechanism aligns the operator’s fuel costs with actual system utilization.
Commercial Reconciliation
Shippers and operators conduct monthly audits to reconcile the volume of gas injected, the volume retained for fuel, and the volume delivered to the customer. Any discrepancies in the fuel retention rate are adjusted in subsequent billing cycles to ensure that the shipper is only charged for actual fuel used. This reconciliation process is essential for maintaining trust between the parties.