Gulf Coast Fall 2026 Turnaround Schedule: Every Confirmed and Expected Outage

The Gulf Coast fall turnaround season runs from September through November each year, representing one of the two primary maintenance windows for refineries and petrochemical plants across Texas and Louisiana. The fall window is preferred by operators because it avoids peak summer gasoline demand, hurricane season uncertainty in August, and the cold weather complications that arise in December and January. For vendors selling equipment, materials, and services into the downstream energy sector, the fall 2026 season represents a concentrated procurement opportunity across multiple major facilities.

This guide compiles confirmed and expected turnaround events across the Gulf Coast for fall 2026, organized by facility with links to detailed vendor positioning guides where available. Turnaround schedules are not publicly published by operators, so the information here is based on disclosed maintenance spending patterns, typical cycle lengths, permit filings, and industry intelligence. Vendors should use this as a planning tool and verify specific timing through direct engagement with facility contacts.

Fall 2026 turnaround schedule overview

All status designations are based on typical turnaround cycle analysis and publicly available information. "Expected" indicates the facility is within its typical major turnaround window based on cycle length. Specific unit scopes and exact dates are not disclosed by operators and should be confirmed through direct facility contacts.

Texas facilities

ExxonMobil Baytown

The 584,000 bpd Baytown complex integrates refining with a 3.4 billion pound per year olefins plant and downstream polyethylene production. Turnaround events at Baytown generate demand across refining, petrochemical, and polymer service categories simultaneously. The site employs over 10,000 people and operates on a 4 to 5 year major turnaround cycle. See the full ExxonMobil Baytown turnaround guide for procurement structure and key contacts.

Marathon Galveston Bay

At 593,000 bpd, Marathon Galveston Bay in Texas City is the largest refinery in the Marathon Petroleum system. Formerly the BP Texas City refinery, the facility has undergone significant capital investment since Marathon's 2013 acquisition. Major turnarounds at this scale involve hundreds of contractors and require ISNetworld prequalification. See the full Marathon Galveston Bay turnaround guide for ISNetworld requirements and procurement paths.

Motiva Port Arthur

The largest single site refinery in North America at 630,000 bpd, Motiva Port Arthur is owned by Saudi Aramco. Major turnarounds can involve 3,000 to 5,000 supplemental craft workers at peak. The facility's procurement process reflects Saudi Aramco engineering standards (SAES) alongside standard API and ASME codes. See the full Motiva Port Arthur turnaround guide for vendor qualification details.

Valero Port Arthur

Valero's 395,000 bpd Port Arthur refinery operates under Valero's decentralized procurement model, meaning vendor qualification runs through the site rather than corporate headquarters. Adjacent Diamond Green Diesel renewable diesel operations add maintenance demand beyond traditional refining. See the full Valero Port Arthur turnaround guide for the decentralized procurement path.

Phillips 66 Sweeny

The 265,000 bpd Sweeny refinery and adjacent Old Ocean NGL fractionation complex create a combined turnaround footprint spanning refining and midstream services. Phillips 66's 50% interest in CPChem extends the vendor opportunity to adjacent petrochemical operations. See the full Phillips 66 Sweeny turnaround guide for details on both the refinery and fractionator.

LyondellBasell Houston and Channelview

The 268,000 bpd Houston refinery and Channelview chemical complex create an integrated refining and petrochemical footprint. Note that LyondellBasell announced plans to exit refining, so vendors should verify refinery operational status. The Channelview chemical complex continues normal operations. See the full LyondellBasell Houston turnaround guide for current status and Channelview specific qualifications.

Louisiana facilities

Marathon Garyville

Marathon Garyville in Louisiana processes 596,000 bpd, making it comparable in size to Galveston Bay and one of the largest refineries in the country. Garyville and Galveston Bay share turnaround planning practices and contractor evaluations across Marathon's system. See the Louisiana refinery turnaround schedule 2026 for broader Louisiana context.

Citgo Lake Charles

Citgo operates a 425,000 bpd refinery complex in Lake Charles that is one of the most complex refineries in Louisiana. Turnaround activity at Citgo Lake Charles generates significant demand for specialty services given the facility's heavy crude processing configuration and extensive coking capacity. See the Louisiana refinery turnaround schedule 2026 for details.

ExxonMobil Baton Rouge

The 502,000 bpd Baton Rouge refinery is one of ExxonMobil's largest facilities globally and is integrated with an adjacent chemical plant and polyolefins complex. Like ExxonMobil Baytown, turnaround events at Baton Rouge span refining and petrochemical operations. See the Louisiana refinery turnaround schedule 2026 for the full Louisiana schedule.

Procurement timeline for fall 2026

For vendors targeting fall 2026 turnaround work, the procurement timeline is already well advanced. Here is what the typical procurement sequence looks like relative to a September to November execution window.

As of June 2026, the long lead equipment procurement phase is largely complete for fall events. Service contractor selection is in the final stages. Vendors who are not yet engaged with turnaround planning teams at their target facilities should focus on building relationships now for the next cycle, which will be spring 2027 and beyond. The planning for spring 2027 turnarounds is in early scope definition stages now, making this the optimal time to engage turnaround managers and reliability engineers.

How to prepare

The most effective approach for vendors is to map the organizational structure at each target facility, identify the turnaround manager, reliability engineers, and discipline engineers who control vendor selection and equipment specification, and build relationships before the procurement cycle begins. ExecGraph provides this organizational intelligence for every major Gulf Coast refinery and chemical plant, including verified Senior Role contacts, career histories, and warm path connections that create introduction opportunities.

Start with the facilities where you have the strongest existing relationships or product fit, and expand systematically. The fall 2026 window is largely committed, but the spring 2027 and fall 2027 cycles are in early planning stages, and the vendors who engage now will be positioned when the procurement windows open. See the Texas refinery turnaround schedule 2026 and Louisiana refinery turnaround schedule 2026 for state level context.