What is an LCA?

A Life Cycle Assessment (LCA) is a scientific approach to quantifying, assessing and comparing the environmental impacts of products and services throughout their entire lifespan.

Ultimately, the purpose of an LCA is to inform decisions around the mitigation or elimination of a product’s harmful impacts on the natural ecosystem and on human health.

LCA is a powerful tool in the global effort to reduce greenhouse gas emissions and protect biodiversity.

6 reasons why you might need an LCA

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What’s involved in completing a Life Cycle Assessment?

There are 4 main phases in conducting a Life Cycle Assessment, governed by dedicated ISO standards.

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LCA is not just about carbon emissions.

LCA covers many different types of environmental impacts.

The list here includes 16 of the most commonly assessed impact categories and their indicators.

Source: Understanding Product Environmental Footprint and Organisation Environmental Footprint methods, 2021, European Commission.

There are typically 7 stages in a product life cycle (not to be confused with the 4 phases of conducting an LCA)

Undertaking a Life Cycle Assessment (LCA) is becoming a fundamental part of how companies are working toward net zero and more sustainable production, consumption, and supply chain processes.
— KPMG

What does an LCA look like?

Your LCA Report

Once the Life Cycle Assessment is completed, the client receives an initial draft version. This is typically to allow for an independent peer review, or verification of results.

The report includes the following elements:

  • Executive summary

  • Goal and Scope definition

  • Process Flows

  • Data sources

  • Allocation of emissions

  • Sensitivity Analysis

  • Uncertainty Analysis

  • Conclusions

  • Recommendations

  • External Review

  • References

Model Graph with process Flows

Contribution Tree

Environmental Impact Analysis

Impact by Life Cycle stage

Useful Links and Resources

Useful Links and Resources

Here’s a selection of links to articles, videos and podcasts relating to LCA and Environmental sustainability.

How bad are bananas? The carbon footprint of everything - 2020 edition (a useful and entertaining guide to understanding carbon the emissions of contemporary lifestyles).