UNITED STATES OF AMERICA —CITGO Petroleum Corporation has launched a $310 million capital project to install a new depentanizer unit at its Lake Charles refining facility in Southwest Louisiana. Scheduled to become fully operational in 2029, the infrastructure upgrade focuses on improving naphtha processing capabilities. The addition of new processing equipment will allow the facility to convert lower-grade intermediate streams into higher-value gasoline blending components, optimizing the refinery's yield of transportation fuels.
This capital deployment addresses long-term refinery competitiveness by improving product yields and expanding operational flexibility to process domestic light crude oil. Operating along the Calcasieu Ship Channel with a total processing capacity of approximately 829,000 barrels per day across three US facilities, CITGO ranks as the fifth-largest independent refiner in the United States. The Lake Charles site, operational since 1944, serves as the largest assets in CITGO's refining network, supporting downstream logistics across pipeline, marine, and regional distribution channels.
The investment significantly impacts the energy supply chain across the US Gulf Coast and domestic transportation fuel markets by bolstering refined product volumes. Regionally, the multi-year construction phase will drive economic activity in Southwest Louisiana through extended contracting opportunities, specialized engineering services, and increased procurement from local industrial supply chains. The structural enhancement ensures long-term asset utilization for one of the region's key industrial employers.
From a broader market perspective, upgrading naphtha fractionation capabilities aligns with refining industry trends toward maximizing output from lighter domestic crude slates. By converting low-margin naphtha into higher-octane gasoline components, refiners can better navigate shifting product margin dynamics and maintain competitive operating margins amidst evolving energy demand patterns.
