Louisiana Refinery Turnaround Schedule 2026: What Vendors Need to Know

Louisiana is the second largest refining state in the United States with six major refineries processing a combined 2.67 million barrels per day of crude oil. These facilities operate on cyclical turnaround schedules that create the largest concentration of procurement activity in the Gulf South. For vendors selling equipment, services, or materials into these refineries, understanding the Louisiana turnaround cycle is the difference between a full pipeline and an empty quarter.

Unlike Texas, where refinery turnarounds cluster along the Houston Ship Channel and the Golden Triangle, Louisiana's refining capacity is distributed across four distinct corridors: Lake Charles in the southwest, Baton Rouge in the capital region, the River Parishes between Baton Rouge and New Orleans, and the greater New Orleans area. Each corridor has its own contractor base, procurement culture, and maintenance planning cadence. What follows is a framework for understanding how turnaround cycles work across Louisiana's major refineries, which facilities are likely in a turnaround window in 2026, and how vendors can position before the procurement windows close.

How Louisiana refinery turnaround cycles work

Louisiana refineries operate on the same 4 to 6 year turnaround cycles as their Texas counterparts, with major process units including crude distillation, fluid catalytic cracking, hydrocracking, and coking each running on independent schedules. A single refinery may have multiple turnaround events in any given year, staggered across different units to minimize throughput disruption.

The Gulf Coast turnaround season historically concentrates in two windows. The spring window runs from late February through May, after winter heating demand subsides and before summer gasoline production peaks. The fall window runs from September through November, after summer driving season ends. Louisiana refineries generally follow this pattern, though the largest operators increasingly schedule turnarounds based on equipment condition monitoring data rather than fixed calendar intervals. Predictive maintenance programs using vibration analysis, wall thickness monitoring, and process analytics allow some operators to extend run times beyond traditional cycles while others pull turnarounds forward when inspection data reveals accelerated corrosion or degradation.

Procurement for a major Louisiana refinery turnaround follows a predictable sequence. The turnaround manager and planning team develop the work scope 18 to 24 months before execution. Engineering reviews and material takeoffs happen 12 to 18 months out. Purchase requisitions flow to procurement 9 to 15 months out. RFQs go to vendors 6 to 12 months out. Material deliveries and contractor mobilization happen in the final 3 months. For vendors, the window to influence a turnaround is 12 to 18 months before execution, when work scope is being defined and material specifications are being written.

Facilities likely in turnaround windows in 2026

Based on publicly available information including permit filings, contractor mobilization patterns, operator earnings disclosures, and industry reporting, several major Louisiana refineries are expected to have significant planned outage activity in 2026 and early 2027.

The Marathon Garyville refinery in St. James Parish is the third largest refinery in the United States at 606,000 barrels per day. Originally built by Marathon in 1976, making it the last greenfield refinery constructed in the U.S. before the Brownsville project, the Garyville complex processes a wide range of crude slates and produces gasoline, diesel, jet fuel, and petrochemical feedstocks. Marathon discloses aggregate turnaround spending in quarterly earnings calls and has indicated above average maintenance activity across its system in 2026. The Garyville refinery operates on a multi year turnaround cycle for its fluid catalytic cracker and crude unit, and facilities of this scale and age require regular major maintenance. ExecGraph tracks contacts across Marathon's Gulf Coast operations including operations managers, maintenance planners, and procurement leads.

The ExxonMobil Baton Rouge refinery is the fifth largest in the United States at 522,500 barrels per day. The Baton Rouge complex is one of ExxonMobil's most integrated sites, combining refining with chemical manufacturing and polymer production on a single campus along the Mississippi River. ExxonMobil has historically staggered turnarounds between its Baton Rouge and Beaumont operations to maintain system wide throughput. With ExxonMobil's Beaumont refinery having undergone turnaround activity in early 2026, the Baton Rouge facility's next major cycle is a significant planning consideration for vendors covering the ExxonMobil account. ExecGraph tracks over 700 contacts at ExxonMobil across operations, maintenance, engineering, and procurement.

The CITGO Lake Charles refinery processes 459,800 barrels per day, making it the seventh largest refinery in the United States and the largest in Louisiana by single site capacity. Owned by Venezuelan state oil company PDVSA through its CITGO subsidiary, the Lake Charles complex has operated under sanctions related uncertainty in recent years, but maintenance spending has continued because the cost of an unplanned shutdown at this scale exceeds any budget constraint. CITGO's turnaround planning at Lake Charles is managed by a large onsite maintenance and reliability organization. ExecGraph tracks contacts across the Lake Charles market including 1,584 professionals at 68 companies.

The Phillips 66 Lake Charles refinery operates at 263,700 barrels per day in Westlake, Louisiana. Phillips 66 has invested in reliability improvements and clean fuels compliance across its refining system. The Lake Charles refinery produces gasoline, diesel, and jet fuel and is a major employer in the Calcasieu Parish industrial corridor. Turnaround activity at Phillips 66 creates demand for heat exchangers, rotating equipment services, specialty welding, and catalyst handling.

The Shell Norco Manufacturing Complex in the River Parishes produces 231,827 barrels per day of refined products alongside a major chemical manufacturing operation producing ethylene and other petrochemicals. Shell's integrated Norco site operates under a dual refining and chemical organizational structure, which means turnaround planning involves coordination between the refining maintenance team and the chemicals operations team. Vendors selling into Shell Norco need relationships on both sides of that organizational boundary.

The PBF Energy Chalmette refinery at 190,000 barrels per day is the smallest of the six major Louisiana refineries but remains a significant procurement opportunity. PBF acquired the Chalmette complex from ExxonMobil and has invested in operational improvements since the acquisition. Turnaround events at mid size refineries like Chalmette can be proportionally more accessible for smaller and regional vendors because the contractor community is less dominated by the national service companies that lock up major turnaround scope at the largest facilities.

What Louisiana turnarounds mean for vendors

The combined refining capacity in Louisiana creates annual turnaround spending that runs into the hundreds of millions of dollars across the state. Each event involves a predictable set of procurement categories that vendors should understand.

Turnaround procurement at Louisiana refineries follows the same category structure as Texas facilities. Rotating equipment overhauls including pumps, compressors, and turbines represent the largest single category. Heat exchanger maintenance including bundle pulling, tube inspection, retubing, and cleaning is the second major category. Valve maintenance and replacement, both control valves and isolation valves, is a persistent turnaround category. Instrumentation and control system upgrades increasingly occur during turnaround windows when systems can be taken offline for migration work.

The contacts who matter during the 12 to 18 month planning phase are turnaround planners, reliability engineers, maintenance managers, and mechanical integrity specialists. These are the people who decide which equipment gets replaced, which repairs get specified, and which vendors get invited to bid. By the time a purchase order reaches procurement, the specification is locked and the vendor selection is largely decided.

Louisiana's geographic distribution creates both challenges and opportunities for vendors. A vendor based in Houston can reach Lake Charles in two hours but needs three hours to reach Garyville and four to reach Chalmette. The contractors and vendors who invest in local relationships across all four Louisiana corridors face less competition than those who focus exclusively on the Lake Charles cluster.

How to position for Louisiana turnaround business

The most effective approach for vendors targeting Louisiana turnaround business is to build relationships with turnaround planning teams and reliability engineers well before the outage cycle begins. The ExecGraph turnaround calendar tracks confirmed and projected turnaround events across the Gulf Coast including Louisiana facilities, with timing windows and unit scope.

For each Louisiana refinery, ExecGraph maps the organizational structure including turnaround planners, reliability engineers, maintenance managers, and the procurement contacts who execute purchase orders. The platform identifies warm path connections between contacts at different Louisiana facilities, showing where career overlaps create introduction opportunities. A reliability engineer who spent five years at CITGO Lake Charles before joining Marathon Garyville is a connection point for any vendor who has existing CITGO relationships.

ExecGraph tracks 2,435 professionals across 111 companies in Louisiana's Lake Charles and New Orleans markets. The Lake Charles market alone has 1,584 tracked contacts across 68 companies, and the New Orleans market has 851 contacts across 43 companies. Understanding who is responsible for turnaround planning at each facility, and reaching them 12 to 18 months before the expected outage, is the single highest value activity for any vendor selling into the Louisiana refining sector.

Frequently asked questions

How many refineries are in Louisiana?

Louisiana has 6 major refineries with a combined crude processing capacity of 2.67 million barrels per day. The largest is Marathon Garyville at 606,000 bpd, followed by ExxonMobil Baton Rouge at 522,500 bpd, CITGO Lake Charles at 459,800 bpd, Phillips 66 Lake Charles at 263,700 bpd, Shell Norco at 231,827 bpd, and PBF Chalmette at 190,000 bpd.

When do Louisiana refineries schedule turnarounds?

Louisiana refineries follow the standard Gulf Coast turnaround pattern with two primary windows: spring (late February through May) and fall (September through November). Major process units operate on 4 to 6 year turnaround cycles. Procurement begins 12 to 18 months before the scheduled shutdown date.

How do vendors get qualified for Louisiana refinery turnarounds?

Vendors must typically prequalify through ISNetworld or a similar contractor management platform, then obtain technical qualification from the facility's engineering or maintenance team, followed by commercial qualification through procurement. An internal sponsor, usually a maintenance engineer or reliability specialist, significantly accelerates the process. ExecGraph tracks 2,435 contacts across Louisiana energy facilities to help vendors identify the right sponsorship path.

Which Louisiana refineries have the largest turnaround spending?

Turnaround spending correlates with facility size and complexity. Marathon Garyville (606,000 bpd), ExxonMobil Baton Rouge (522,500 bpd), and CITGO Lake Charles (459,800 bpd) are the three largest Louisiana refineries and generate the highest turnaround procurement volumes, often exceeding $100 million per major event.