A significant new Life Cycle Assessment (LCA) study has been released, shedding crucial light on the environmental impact of polyester, one of the world’s most widely used fibers. The research aims to address long-standing gaps in publicly available LCA data concerning both virgin and recycled polyester production across the global textile industry.
Conducted by Textile Exchange and SCS Consulting Services, this comprehensive LCA data initiative was prompted by persistent voids in environmental reporting, particularly regarding thermomechanical and chemical polyester recycling, and virgin polyester production in Asia. Asia currently accounts for over half of global polyester output. These new findings are designed to enhance the reliability of LCA assessments for various polyester pathways, building upon an earlier SCS study initially conducted for the UN Fashion Industry Charter that highlighted these critical data deficiencies.
Key Polyester LCA Data Insights Emerge
The study offers critical Polyester LCA Data Insights, highlighting several key areas that impact textile sustainability:
Energy Mix Significantly Alters Climate Impact
The analysis revealed that transitioning to a renewable energy mix can “substantially reduce” polyester’s climate impact. Conversely, reliance on coal-intensive energy grids was shown to significantly increase this environmental impact, underscoring the vital role of energy sourcing in advancing textile sustainability within the manufacturing process.
Diverse Approaches Needed for Recycling
The research indicates that no single recycling method provides a universal solution. Thermomechanical recycling is generally less resource-intensive but requires clean, high-quality material inputs. Chemical recycling, while capable of processing more complex waste streams, demands greater energy and chemical resources. Scaling circularity within the industry will necessitate a multi-faceted approach, combining various technologies for recycled polyester production.
Overcoming Post-Consumer Sorting Challenges
A major hurdle identified in post-consumer recycled polyester efforts is the limitation imposed by sorting processes. The report emphasizes the need for improved sorting and preprocessing across the entire value chain. It notes that commercial-scale chemical recycling predominantly focuses on post-industrial waste due to the complex sorting and logistical challenges associated with post-consumer materials.
Transportation’s Role in Environmental Performance
The study found that the distances involved in collecting textile waste can meaningfully influence overall environmental performance. This suggests that local sourcing of materials offers a practical strategy for reducing negative environmental impact and enhancing supply chain efficiency.
Filling Critical Data Gaps with New Public Information
Crucially, the study delivers new publicly available LCA data on virgin polyester produced in Southeast Asia, as well as recycled polyester production originating from China, Europe, and the US. It also marks the first known publicly available primary data for virgin polyethylene terephthalate (PET) production in Asia, encompassing melt, chip, and staple fiber from Southeast Asia, providing invaluable benchmarks for future sustainability assessments.
Beth Jensen, Chief Impact Officer at Textile Exchange, commented on the significance of the research, stating, “We are pleased to have worked with SCS Consulting Services on this LCA study, which marks a significant update to existing polyester LCA data and advances our understanding of the impacts of its production for the fashion, textile, and apparel industry. By addressing known data gaps across both virgin and recycled polyester, and by identifying major hotspot impact areas, these findings create a stronger foundation for making informed decisions that support the shift toward preferred production systems.”
The research was conducted in strict adherence to ISO 14044 standards and complied with the requirements of the Higg Materials Sustainability Index. Primary data collection occurred between 2022 and 2024 from seven facilities, including three chemical recycling operations, three thermomechanical recycling operations, and one virgin PET producer. This rigorous approach ensures the integrity and reliability of the new environmental impact insights.
