Carbon Footprint of PET

PET (polyethylene terephthalate) is a widely used plastic in apparel and footwear, commonly found in polyester fabrics, shoe components, and packaging, with a carbon footprint of approximately 6.5 kg CO₂e per kg of material produced. While the carbon footprint of PET per kg is significant due to its petroleum-based origins, recycled PET (rPET) offers a lower-impact alternative that is increasingly adopted across the fashion industry.

What’s are the CO2e emissions of PET

What’s are the CO2e emissions of PET?

The carbon footprint of PET averages 6.5 kg CO2e per kg (median 6.3 kg), with greenhouse gas emissions from PET primarily driven by petrochemical feedstock production and energy-intensive polymerization processes. CO2 emissions from PET manufacturing reflect the fossil fuel dependency of conventional plastic production pathways.
  • Average footprint per kg: 6.5 kgCO2e
  • Median footprint per kg: 6.3 kgCO2e

Emissions by Process Step in PET Production

The footprint of Pet includes emissions from multiple processing stages. The following process steps were identified as carbon hotspots for Pet production:
  • Raw Materials: 43.8%
  • Molding And Curing: 24.0%
  • Yarn Formation: 21.4%
Emissions by Process Step in PET Production
How Does PET Compare to Alternatives?

How Does PET Compare to Alternatives?

Recycled PET production generates 4.3 kg CO2e per kg, representing a 34% reduction in greenhouse gas emissions compared to virgin PET production at 6.5 kg CO2e per kg.
  • Virgin PET per kg: 6.5 kgCO2e
  • Recycled PET per kg: 4.3 kgCO2e

PET Water Consumption

Water usage Pet averages 2.5 m3 per kg for virgin material, while the water footprint Pet per kg drops to 2.4 m3 when recycled, demonstrating reduced Pet water consumption through circular practices.
  • Average water use per kg: 2.5 m3
  • Median water use per kg: 2.3 m3
PET Water Consumption

PET deep dive

Read our extensive analysis on the environmental footprint of PET

 PET Deep Dive

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References

Data sourced from Carbonfact’s proprietary database, powered by over 50 million LCAs run on textile, fashion, and footwear products. The methodology is aligned with the EU Product Environmental Footprint (PEF) and adapted for product category specificity.

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