Every EPD rests on an LCA. Understanding LCA means understanding where the figures in your environmental declaration come from, and why the rigour of the method makes all the difference.
Life Cycle Assessment is a technique for assessing the environmental impacts of a product across its entire life cycle, governed by the ISO 14040 and ISO 14044 standards. It is multi-stage (from raw-material extraction to end of life), multi-criteria (climate, water, resources, waste, etc.) and multi-systemic.
We set the framework: objective, scope, functional unit, intended application.
We collect all the product data: manufacturing, transport, use, end of life.
Each piece of data collected is associated with an environmental dataset and modelled in LCA software.
The software calculates the environmental indicators defined in step 1, according to the applicable standard.
The results are formatted into the deliverables (sheet, report) and ready to use.
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Product data (components, mass, materials, processes), factory (manufacturing, waste, energy), transport, use and end of life. Some come from the declarant, others from default scenarios.
We rely on databases (e.g. ecoinvent, Base Empreinte) that associate each flow with impacts quantified by third parties — open or closed, free or paid.
Once the LCA has been carried out, its results serve several purposes: producing EPDs (compliance, markets), steering an eco-design policy, or tracking your carbon trajectory.
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