Wool Life Cycle Assessment (LCA)

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A natural fibre, wool is intrinsically part of the life cycle of the planet. To better understand how wool and wool products interact with the environment, a tool called life cycle assessment (LCA) is used. 

The most commonly used tool for evaluating the environmental performance of products,LCA typically measures the use of natural resources, greenhouse gas (GHG) emissions and other environmental impacts over a product's lifespan. 


On Farm

Wool's life cycle begins on the farm where wool  grows naturally on sheep.

After it leaves the farm it is cleaned and spun, then woven or knitted into garments, carpets, or other wool products. Wool is resilient and longlasting, and readily recycledand reused.

At the end of its useful like wool readily biodegrades and returns to the earth. Find out more with our Fact Sheet 14 - Wool Life Cycle Assessment.


Improving LCA for Wool

LCA is a science  and is still evolving. In 2012 IWTO formed the Wool LCA Technical Advisory Group (TAG) to improve the quality of information available on the environmental performance of wool products globally.

Properly used, LCA can help to identify ‘hot spots’ for action to increase efficiency in the wool supply chain, decrease negative impacts and accelerate environmental benefits, and to provide the data sought by brands, retailers and consumers.

IWTO's researchers are currently working to fill data gaps along the entire wool supply chain by working with early stage processors, spinning and weaving companies to measure and benchmark the wool industry's performance in areas such as water and energy use.

Read more about how the wool industry is working to improve the science of LCA in our Fact Sheet 03 - Assessing Wool's Environmental Performance.


Wool LCA Guidelines 

Agricultural products such as wool are particularly challenging to assess due to factors such as the wide diversity of sheep farming systems producing the greasy wool raw material, the complexity of allocating the environmental burden between co-products such as fibre and sheep meat, and the range of wool products from high value apparel to interior textiles and industrial insulation.  

In order to address these challenges, the IWTO LCA TAG has developed a set of guidelines for conducting LCAs of wool proucts.  These Guidelines assist LCA practicioners apply internationally recognized LCA methods more consistently and accurately to wool products. The Guidelines for conducting a life cycle assessment of the environmental performance of wool products is available as a PDF to download. Click on the link or visit our Resources page.


Learn More about Wool & the Environment

Learn more about what makes wool such a sustainable fibre with our Fact Sheets.

01 Wool is Biodegradable

03 Assessing Wool's Environmental Performance

05 Wool in Marine Environments

07 Recycling & Wool

10 Wool & the Carbon Cycle

13 Wool's Use Phase







View all resources for Wool Life Cycle Assessment (LCA)