Baytown area operations

Today, the ExxonMobil Baytown Complex is one of the largest integrated and most technologically advanced refining and petrochemical complexes in the world. 

Article Aug. 5, 2019

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Baytown area operations

About us

Founded in 1919, the Baytown Refinery began operation in 1920 and the Chemical Plant started up in 1940.

The complex is located on approximately 3,400 acres along the Houston Ship Channel, about 25 miles east of Houston. It is comprised of four manufacturing sites, including one in nearby Mont Belvieu, and a global technology center. Employing a workforce of approximately 7,000, the Baytown area sites are highly integrated which makes the plants and products more efficient. We are developing technologies to make cleaner fuels and are working together to operate more safely and reliably.

A few facts on our facilities:

  • The Refinery has the capability to process up to 584,000 barrels of crude oil per day.
  • The Baytown Chemical Plant produces products such as the butyl in your tires and the polypropylene in your car bumper.
  • The Baytown Olefins Plant, which began operations in 1979, is one of the largest ethylene plants in the world.
  • The Mont Belvieu Plastics Plant was built in 1982 and produces high- and low-density polyethylene, which goes into products such as shrink and stretch film to bundle water bottles and heavy-duty sacks that hold food.
  • The Baytown Technology & Engineering Complex has been on-site since the 1920s. It has produced innovative technology, such as the lithium-ion battery separator film and numerous plastics light-weighting technologies that help make our vehicles more fuel efficient.

We recently completed the construction of a multi-billion dollar ethane cracker at the Baytown Olefins Plant. The cracker has a capacity of 1.5 million tons per year, and provides ethylene feedstock to two new high-performance polyethylene lines at Mont Belvieu Plastics Plant that started up in 2017. These projects are part of ExxonMobil’s larger 10-year, $20 billion Growing the Gulf expansion program.

Learn more about Baytown’s history in our 90th Anniversary Book, published in 2010.

Safety, health and environment

Safety is fundamental at the Baytown Complex, where we have a simple goal: “Nobody gets hurt.”

We operate under closely regulated state and federal programs that authorize certain emissions inherent in manufacturing; however, our goal is to prevent all incidents and releases. We are committed to continuous efforts to improve our environmental performance, and our record speaks to that commitment. Since 2005, ExxonMobil Baytown has spent nearly $1 billion to improve environmental performance. We have reduced total emissions by more than 29 percent and improved our air incident performance, including those that contribute to hydrocarbon flaring, by 64 percent. Since 2005, our three Baytown area plants have reduced upset emissions by 76 percent and the Baytown results have played a role in improving air quality in the greater Houston area as well.

The safety of our employees, contractors and the community is a core value, and we continuously work in pursuit of the goal that Nobody Gets Hurt. We believe in keeping people safe through our safety management systems, which offer a toolkit to analyze and mitigate hazards if they arise. Our integrated approach to safety combines ongoing identification of safe work practices with emerging technology and employee-driven management programs.

We are proud of our environmental progress over the years and maintain our commitment to improving regional air quality. As a Baytown area neighbor, we pledge to continue exploring new ways to reduce emissions and improve air and water quality. Our mission is clear: Protect Tomorrow. Today.

Learn more about Baytown’s environmental performance in our Environmental Progress Report.

Baytown Permits in Public Notice.

Leading-edge environmental technology at the Baytown Olefins Plant Expansion

Watch the video below to learn more about the pressure-assisted, multipoint ground flare and its benefits to the environment.

Emergency preparedness and response

ExxonMobil Baytown’s emergency response teams are 100 percent staffed by employee volunteers.

About 200 dedicated responders undergo ongoing, rigorous training to ensure world-class response capabilities. We work closely with the city to coordinate mutual aid and off-site assistance, helping to safeguard our employees, contractors, neighbors and facilities. Our response teams routinely test emergency notification equipment and simulate emergency scenarios with city teams to ensure preparation and coordination.

Shelter-in-place: What you need to know

In the event of a chemical release, emergency-management officials or other authorities may advise residents to shelter-in-place. This means to stay inside homes or other safe structures and secure the building until notified that the situation is safe.

Shelter-in-place warnings are often precautionary, but they should always be followed.

If at home:

  • Tightly close all doors and windows; turn off air conditioners, heaters and fans.
  • Students shelter in place in schools. Parents should avoid going to pick up children unless school officials direct you to do so.

If at work:

  • It may be determined that the safest course of action is to stay inside the building.
  • While some employees may make a personal decision to leave, this decision should be made with the best available information.

Baytown Area “shelter in place” video

English version

Spanish version

Hurricane preparedness

We constantly monitor weather conditions and prepare our infrastructure and people for the possibility of high winds and storm surge. We have a comprehensive plan for severe weather emergencies.

Residents can stay informed and prepared by signing up for the City of Baytown’s Baytown Alert service.

Community and news

For more than 95 years, ExxonMobil has devoted its energy to not only operating safely, but also to being an important part of the community.

Starting almost immediately, our predecessor, the Humble Oil Company, constructed schools, roads, houses and places of gathering for the community. Today, we remain committed to upholding traditions of service and engagement. As more than just near neighbors, we are community partners, and we strive to make contributions that support and strengthen our local communities. After all, we live and work here, too.

Baytown area employees, retirees and their families annually spend approximately 28,000 hours as volunteers for nonprofit agencies, schools and community organizations. The company supports those volunteer efforts with annual local grants totaling nearly $2 million. ExxonMobil Baytown is also proud to take a leadership role in important community initiatives such as United Way and Relay for Life. Each year, more than 1,000 ExxonMobil employees volunteer with these and other area organizations that strengthen our community and contribute to the livelihood and well-being of our neighbors.

ExxonMobil also continues to help build a stable local economy. ExxonMobil Baytown area contributes more than $7 billion to the regional economy, including nearly 15,000 direct and indirect jobs. We pay more than $150 million in the form of property, sales, fees and special district taxes.

Contact information

We are working around the clock, 365 days a year, to ensure that we meet the demands of our customers and our commitment of safety and partnership to our local Baytown and Mont Belvieu communities, follow through on our commitment to safety and engage our partners in the Baytown and Mont Belvieu communities.

For updates on planned tests or maintenance, as well as emergency information about industrial facilities in the Baytown area, please download the Community Awareness Emergency Response (CAER) Online App or visit

If you have an immediate concern regarding the ExxonMobil Baytown area, please call our Site Shift Superintendent’s office at 346-259-5305.