Refineries in Louisiana: Locations, Capacity, and Operators

Louisiana currently has 6 major crude oil refineries in the ExecGraph dataset, spread across 5 cities: Lake Charles, Garyville, Baton Rouge, Norco, and Chalmette. Together they provide about 2.3 million barrels per day of crude processing capacity, with Marathon Garyville Refinery, ExxonMobil Baton Rouge Complex, and CITGO Lake Charles Refinery representing the largest sites by throughput.

How many refineries are in Louisiana today?

For planning, sales, or market analysis, the operative number for large, fuels-focused crude refineries in Louisiana is 6. ExecGraph focuses this page on those six high-capacity plants where we maintain verified crude, fluid catalytic cracking, and delayed coking capacity from recent refinery capacity filings.

Industry statistics often separate a smaller group of large, fuels-focused crude refineries from a broader universe of industrial plants. The facility list below reflects the six Louisiana crude refineries for which ExecGraph holds detailed unit configurations and capacity data, rather than every possible hydrocarbon processing site in the state.

The 6 major crude oil refineries covered in Louisiana are:

• Marathon Garyville Refinery in Garyville
• ExxonMobil Baton Rouge Complex in Baton Rouge
• CITGO Lake Charles Refinery in Lake Charles
• Phillips 66 Lake Charles Refinery in Westlake, in the Lake Charles area
• Shell Norco Refinery in Norco
• PBF Chalmette Refinery in Chalmette

These facilities range from high six figure to lower six figure barrels per day of crude capacity. Marathon Garyville Refinery is the largest Louisiana refinery in this set, followed by ExxonMobil's Baton Rouge Complex and CITGO's Lake Charles Refinery.

Key refining cities in Louisiana

Louisiana's refining footprint is concentrated in five cities that anchor the state's fuels and petrochemicals economy. Two refineries sit in the Lake Charles area in the southwest, while four refineries line the Mississippi River corridor between Baton Rouge and the New Orleans region.

Across these cities, ExecGraph's Louisiana refinery coverage totals about 2.3 million barrels per day of crude capacity. Lake Charles accounts for roughly 724,000 barrels per day across two refineries, while single large sites in Garyville, Baton Rouge, Norco, and Chalmette provide the balance.

For vendors and project teams, organizing pursuits by city is often the most practical approach, since many service providers can cover multiple plants within a metro area or along a single logistics corridor.

Mississippi River corridor refineries

Four of the six Louisiana refineries ExecGraph tracks are located along the Mississippi River between Baton Rouge and the New Orleans metro: Garyville, Baton Rouge, Norco, and Chalmette. This river corridor is central to Louisiana's refining and petrochemical system, linking crude supply, product export channels, and downstream chemical plants.

Each Mississippi River refinery city plays a distinct role:

• Garyville - Home to Marathon Garyville Refinery, a high capacity fuels refinery that anchors regional throughput.
• Baton Rouge - Host to the integrated ExxonMobil Baton Rouge Complex, combining a refinery with major chemical production.
• Norco - Site of Shell Norco Refinery, integrated with broader Shell operations in the area.
• Chalmette - Location of PBF Chalmette Refinery, serving regional fuels demand and export markets.

From a commercial perspective, the Mississippi River corridor creates efficiencies for field crews, inspection teams, and capital project vendors who can stage resources to serve multiple refineries within a relatively short drive while using the river as a backbone for materials and equipment logistics.

Lake Charles area refineries

The Lake Charles area in southwest Louisiana hosts two large refineries covered by ExecGraph: CITGO Lake Charles Refinery in Lake Charles and Phillips 66 Lake Charles Refinery in nearby Westlake. Together they contribute approximately 724,000 barrels per day of crude capacity.

This cluster strengthens the region's role as a Gulf Coast refining and petrochemical hub. The presence of two large refineries, nearby power generation assets, and liquefied natural gas infrastructure in the area underpins a dense ecosystem of industrial contractors and equipment suppliers.

Facility level overview: Louisiana refineries and unit configurations

To move beyond a simple refinery count, facility level detail is critical. Unit configurations, crude and conversion capacities, and integration with chemicals drive turnaround workloads, reliability priorities, and the types of services each plant is likely to procure.

Across the six Louisiana refineries in the ExecGraph dataset, a common pattern appears. Each facility is built around crude distillation, fluid catalytic cracking, delayed coking, reforming, hydrotreating, alkylation, and sulfur recovery units. This configuration supports processing of a range of crude slates into gasoline, diesel, and other light products while managing sulfur and residue streams.

Refinery profiles: what each Louisiana site looks like on the ground

Marathon Garyville Refinery, Garyville

Marathon Garyville Refinery in Garyville is the largest Louisiana refinery in the ExecGraph dataset by crude capacity at 606,000 barrels per day. The site includes crude distillation, a 150,000 barrel per day fluid catalytic cracker, a 110,500 barrel per day delayed coker, reforming, hydrotreating, alkylation, and sulfur recovery units.

That unit mix supports high throughput of heavier crudes and large gasoline and distillate production, which in turn sustains a substantial program of turnaround, inspection, and reliability work across both crude and conversion units. For vendors, Garyville represents a single site where multiple specialized work scopes can be pursued within one commercial relationship.

ExxonMobil Baton Rouge Complex, Baton Rouge

ExxonMobil Baton Rouge Complex in Baton Rouge combines a refinery with a large chemical plant. On the refining side, the complex has 522,500 barrels per day of crude capacity, supported by a 243,000 barrel per day fluid catalytic cracker and a 123,500 barrel per day delayed coker, along with reformers, hydrotreaters, alkylation, and sulfur recovery units.

Beyond refining, the Baton Rouge Complex includes an ethylene cracker and downstream polyethylene and polypropylene units. This integration ties fuels and olefins value chains together on the same site, broadening the range of potential capital and maintenance projects that touch both refining and chemicals infrastructure.

For service providers, Baton Rouge offers multiple entry points. A single supplier may find opportunities across refining process units, ethylene and polymer units, utilities, and logistics systems, each with different stakeholders in operations, engineering, and projects groups.

CITGO Lake Charles Refinery, Lake Charles

CITGO Lake Charles Refinery in Lake Charles has 459,800 barrels per day of crude capacity, anchored by a 148,000 barrel per day fluid catalytic cracker and a 110,000 barrel per day delayed coker. The plant also runs crude distillation, reforming, hydrotreating, alkylation, and sulfur recovery units.

Within the Lake Charles area, CITGO is one of two major crude refineries, sharing regional logistics, contractor bases, and supporting infrastructure with the nearby Phillips 66 Lake Charles Refinery. Many industrial vendors can structure their Lake Charles presence to cover both plants efficiently.

Phillips 66 Lake Charles Refinery, Westlake

Phillips 66 Lake Charles Refinery is located in Westlake, in the Lake Charles industrial area. It has 263,700 barrels per day of crude capacity, along with a 50,941 barrel per day fluid catalytic cracker and a 66,543 barrel per day delayed coker. The refinery's unit slate includes crude distillation, reformer, hydrotreaters, alkylation, and sulfur recovery.

From an operator perspective, this refinery is part of Phillips 66's broader Gulf Coast refining system. For suppliers already active at other Phillips 66 sites, the common corporate standards, contracting frameworks, and technical practices can reduce the time needed to qualify for work at Westlake.

Shell Norco Refinery, Norco

Shell Norco Refinery in Norco has 231,827 barrels per day of crude capacity. Conversion capacity includes a 118,800 barrel per day fluid catalytic cracker and a 28,500 barrel per day delayed coker, plus reforming, hydrotreating, alkylation, and sulfur recovery units.

The Norco site is embedded in a wider Shell industrial presence in the area, with shared infrastructure and community ties along the Mississippi River. That context often shapes vendor expectations around safety performance, reliability programs, and long term partnerships across Shell operated assets.

PBF Chalmette Refinery, Chalmette

PBF Chalmette Refinery in Chalmette rounds out the Louisiana refinery set. It has 190,000 barrels per day of crude capacity, supported by a 75,600 barrel per day fluid catalytic cracker and a 42,000 barrel per day delayed coker. Like the other Louisiana refineries, it operates crude distillation, reforming, hydrotreating, alkylation, and sulfur recovery units.

Within PBF Energy's portfolio, Chalmette is one of several complex, conversion oriented refineries. Vendors familiar with PBF procedures and reliability expectations at other sites can often transfer that experience directly to Chalmette engagement.

What the Louisiana refinery footprint means for suppliers and project teams

For contractors, OEMs, and service providers, Louisiana's six refineries represent a concentrated but diverse market. A relatively small number of large, complex sites account for a high volume of crude throughput and, by extension, a steady cadence of maintenance, reliability, and capital work across units.

The operator mix includes Marathon Petroleum, ExxonMobil, CITGO, Phillips 66, Shell, and PBF Energy. Each company brings its own engineering standards, contracting models, and approval workflows, but the underlying unit operations are similar from site to site. Understanding both the corporate decision structures and the local plant organizations is essential to winning and growing accounts.

ExecGraph's operator coverage shows that across these companies, thousands of professionals sit in functions that influence refinery spend, including operations, engineering, maintenance, projects, procurement, HSE, technology, and executive leadership roles. Effective pursuit strategies align technical value propositions with the priorities of each of these functional buying centers.

Using ExecGraph to navigate Louisiana refineries

ExecGraph links each Louisiana refinery to its operator, process units, verified capacities, and the organizational structure behind plant decisions. That structure helps commercial, project, and strategy teams move from a high level view of the 6 site footprint to specific pursuit plans at the facility or unit level.

Within a single refinery, users can move from the site record into detailed views of units such as crude distillation, fluid catalytic cracking, delayed coking, reforming, hydrotreaters, alkylation, and sulfur recovery. From there, they can identify which engineering, operations, maintenance, projects, and procurement roles are most closely tied to upcoming work on that equipment class.

Because ExecGraph's contact and facility coverage spans the same operators across multiple sites, teams can reuse account intelligence beyond Louisiana. Lessons from a successful turnaround campaign at one Marathon or Phillips 66 refinery, for example, can directly inform pursuit plans at Garyville or Westlake.

In practice, many energy and industrial companies treat the six Louisiana refineries as a distinct campaign set within a wider Gulf Coast strategy. The combination of large unit capacities, integrated petrochemical assets at Baton Rouge, and clustering in Lake Charles and along the Mississippi River makes Louisiana an attractive focus area for targeted growth initiatives.