At Westlake, we continuously look for opportunities to improve our operations, safety, efficiencies, and impact to the environment. We monitor and measure costs
and benefits, including sustainability benefits, when gauging the efficacy of projects.  We take a holistic view of how projects can improve operations in multiple ways.


Policies  Operational, Chemical and Worker Safety


For Chemical Safety Management, Westlake has a standardized chemical approval process. Before each chemical is brought on site, the hazards associated with the storage and use of the chemical are evaluated by the Health, Safety and Environment (HSE) department. Any special precautions, training or equipment that are required are conducted and utilized prior to using the chemical. If acceptable risk mitigation cannot be implemented, the chemical is not approved and alternatives must be found.

rss  Operational Safety

Drive to Zero is our safety commitment to each other. Safety is the number one priority in the workplace and our plants across the globe. Westlake is committed to ensuring our operations and people are kept safe in all plants.

Our safety efforts translate into an overall injury rate that is below the industry average. Our safety record consistently ranks Westlake in the top quartile or 25% of performance for our industry categories. 


Policies  Process Safety Management (PSM), and Health, Safety and Environment (HSE)


Process Safety Management (PSM) requires consistent application of best practices across plants and manufacturing operations. HSE plays a pivotal role in overseeing all related policy protections, risk identification, and other aspects of our business — to keep our people healthy and safe. Westlake's HSE and PSM processes are audited at all sites globally every three years, reinforcing that safety is not a goal but an unchanging requirement we vigilantly enforce.

To further demonstrate this, we are actively working towards our goal of attaining Occupational Safety and Health Administration (OSHA) Star status for each or our United States-based chemical plants by 2024.

rss  Energy Use, Air Quality and Emissions

Westlake continues to make steady progress toward achieving our 2030 target to reduce Scope 1 and Scope 2 CO2e emissions per ton of production by 20% from a
2016 baseline. In 2022, we achieved a total reduction of 18% in Scope 1 and Scope 2 GHG emissions intensity from our 2016 intensity baseline.   

Our total energy usage in 2022 was 188,766,671 MMBTUs.  Our energy efficiency (MMBTU per ton of production) improved 6.74% over the previous year.  By continuing our efforts to improve our process efficiency and install equipment upgrades, we also improved our energy efficiency by 10.11% in 2022 compared to our 2016 baseline. 


Policies  Responsible Waste Management and Water Use


At Westlake, we are engaged in the transition toward a circular economy.  One of our key priorities is to reduce waste being directed to landfills by transforming it into feedstock for our products. Materials that our facilities cannot reuse are diverted from the waste stream and provided as recycled material inputs for sister facilities to use in making other products where possible.  

  • In 2022, our polyethylene, compounds and building products businesses produced approximately 400 million pounds of total recycled final products from in-house generated process regrind, post-industrial recycled material, or post-consumer recycled material in the product formulas.
  • Westlake developed high-performing epoxy systems for wind turbine blades, and are developing a range of epoxy systems designed for the production of
    larger, lighter, and more durable fiber-reinforced pressure vessels for hydrogen production, storage and transportation. 

Westlake joined The Alliance to End Plastic Waste (AEPW) in March 2019 to reduce plastic waste in the environment, particularly in the world's oceans. AEPW is a coalition of 50 companies from the plastics and consumer goods value chain aligned to work to eliminate plastic waste in the environment and demonstrate projects that create and extract value from plastic waste. 

Water is an integral part of our operations.  In our business, water is used for steam generation, cooling and even incorporation into some of our products. We continuously strive to reduce our water footprint through water reuse and recycling, and by focusing on continual improvement through operational excellence.   

rss  Our Product Innovation

Product Innovation in PVC & Caustic Soda

  • In October 2022, Westlake introduced GreenVin bio-attributed PVC, which is produced with renewable energy (under European Guarantees of Origin) and renewable ethylene. The renewable ethylene is derived from bio-naphtha. GreenVin bio-attributed PVC is both ISCC PLUS and REDcert2 certified, using the mass balance approach.  GreenVin PVC is approximately 90% less carbon intensive compared to conventionally produced Westlake PVC.  
  • GreenVin caustic soda is approximately 30% less carbon intensive compared to conventionally produced Westlake caustic soda. Also known as sodium hydroxide, caustic soda is used to produce detergents, cardboard, pharmaceuticals, water treatment, and many other key products.

Product Innovation in Pipe & Fittings  

In 2022, Westlake expanded production of PVCO, a molecular-oriented PVC pipe material with enhanced water flow and a lower-carbon footprint compared to traditional Westlake PVC pipe. During the manufacturing process, the PVC molecules are stretched and reorganized to increase material strength, making the pipe more flexible and lighter weight. Less material per unit length provides secondary benefits for shipping the product.  By reducing the weight of the haulage, vehicles can use less fuel thereby reducing carbon emissions. 

Product Innovation in Epoxy

Westlake Epoxy is a global leader in epoxies critical for the manufacture of pioneering light weighting components for automobiles, aerospace, wind turbines and more. Using Westlake Epoxy-supplied materials, our customer Rassini achieved a 30% weight reduction in the leaf-spring suspension for the 2021 Ford F-150 pickup truck, winning an award from the Society of Plastics Engineers Automotive Division. 

Product Innovation in Building Products

  • In Ohio, Westlake Royal Building Products is part of an initiative that collects old PVC siding from building sites in an effort to divert material from landfills for post-industrial and post-consumer recycled products. More broadly, Westlake achieved two years of +Vantage Vinyl certification, recognizing many activities within the company including our use of Building for Environmental and Economic Sustainability (BEES) software to analyze the environmental life cycle of products, such as the PVC resin used in Westlake Royal Building Products’ vinyl siding. 
  • Westlake's roofing portfolio includes products that are designed to optimally perform in different regional climates, providing durability and energy-efficiency benefits.  Additionally, Westlake offers architectural stone veneer products for exteriors, fireplaces and wall treatments. Three of the stone solutions, produced along with other conventional stone products, at two of our facilities incorporate approximately 45% to 55% recycled content: Versetta Stone® and ProStone® (45% each), and Cultured Stone® (55%). These environmental claims are validated by UL Solutions, a global safety science leader.

Product Innovation in Polyethylene 

Westlake embraces the technical challenges of incorporating higher volumes of recycled materials in our PE resin. We continue to work with customers on how they can use our one-pellet PE compound, which mixes recycled materials and virgin resin with customizable composition for flexible packaging solutions. This solution includes the PIVOTAL product line that has obtained GreenCircle Certification for achieving PCR content ranging from 25% to 45%. This commercial-scale development is an example of how we serve customer demand for increasing circularity in products while maintaining quality. Approximately 50 customers have purchased or sampled PIVOTAL products. 

Product Innovation with Recycled Content (PIR and PCR) 

Westlake Dimex is one of the largest recyclers of industrial PVC and is a leading manufacturer of sustainability-oriented consumer products made from PIR PVC, PE, nylon, thermoplastic elastomers and other materials. Westlake Dimex uses a proprietary blending process to turn harder-to-recycle materials into finished products including a variety of consumer goods such as landscape edging, industrial, home and office matting, exercise matting, marine dock edging and more.

Policies  Circular Economy Solutions

At Westlake, we proactively seek to innovate to advance a circular economy, which aims to keep resources in use for as long as possible to maximize their value. Areas of focus that offer the most potential for creating value are described below:

Customizable engineered solutions:


Extract plasticizers for reuse

The company has utilized a proprietary process to extract plasticizers from unusable items to be reused in a new product or compound.


Reduce odor when using recycled materials

A large hurdle for the application of PCR is odor from residual contaminants, limiting the sustainable compound's use in certain client products.


Incorporate more biodegradable additives:

Westlake is researching the application of biodegradable additives in collaboration with suppliers.