Louisiana Light Sweet

LLS commands premiums due to superior Gulf Coast location providing direct pipeline access to sophisticated refineries optimized for light sweet crude, avoiding transportation costs from Cushing. The grade's gasoline-rich yield pattern (47-52%) matches Gulf Coast refinery configurations perfectly, while coastal location enables efficient export access. Supply constraints from declining offshore production and limited blending components support structural premiums during strong demand periods.

The Capline reversal transformed LLS distribution by enabling Permian crude delivery to Gulf Coast rather than transporting LLS northward, reducing LLS availability for inland markets while concentrating supply at coastal refineries. This change supports LLS premiums by improving supply-demand balance at Gulf Coast, while creating opportunities for LLS exports. The reconfiguration demonstrates infrastructure adaptation to changing US crude production geography.