Crude oil exports out of Corpus Christi represent 60% of the U.S. total, with most of the growth for the past few years coming from the two terminals at Corpus/Ingleside that can almost fully load a VLCC – Very Large Crude Carrier. Other than these two facilities – Enbridge Ingleside Energy Center (EIEC) and Gibson South Texas Gateway, Corpus Inner Harbor docks and other docks in Houston and Port Arthur can only load a VLCC with three reverse lighterings, adding significant cost to those exported barrels.

This competitive advantage has boosted the price of WTI at Corpus over the other primary port facility that exports WTI – which is Houston. As shown in the left graph below, the premium of WTI at Corpus versus the price at Houston (represented by Magellan East Houston), has increased from an average of 19 cents/bbl during the last half of 2022 to 38 cents/bbl month-to-date March 2024. The trend has been up almost a penny per month since mid-2022 (green dashed line). 

However, as shown in the right graph, the differential remains highly volatile, swinging between 10 cents/bbl up to 45 cents/bbl. The volatility is in part due to shipping economics – when crude oil export economics are favorable, the WTI Corpus premium tends to widen.

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