Life cycle assessment (LCA): a guide for businesses
Direct answer
A life cycle assessment (LCA) is a method that determines the environmental impact of a product or service across its entire life cycle, from raw material extraction and production to use and end-of-life processing. The approach is standardised internationally in ISO 14040 and ISO 14044. Companies use the results to improve products, substantiate environmental claims and meet procurement requirements.
- Clear definition
- Data-driven assessment
- Risks and opportunities visible
- Practical next steps
Life cycle assessment (LCA): scattered information versus Energy Intelligence
Suppose you procure window frames and want to know which material burdens the environment least. One material takes a lot of energy to produce, the other has a shorter lifespan or is harder to recycle. Judging only at the factory gate means deciding on a snapshot. A life cycle assessment prevents that and also shows whether an improvement merely shifts the problem to another phase. That makes the instrument relevant to buyers, product developers, construction firms and anyone who has to substantiate a sustainability claim.
- An LCA follows four steps under ISO 14040 and 14044: defining goal and scope, compiling an inventory of all inputs and outputs, impact assessment and interpretation.
- In Dutch construction, LCA underpins the mandatory environmental performance calculation (MPG) required when applying for an environmental permit for new buildings.
- The outcome depends heavily on system boundaries and data quality; only compare two products with the same functional unit and the same calculation method.
Insight
Traditional approach
Information is scattered across portals, documents, invoices or separate spreadsheets.
Modern approach
Data, context and interpretation are brought together into a clear decision picture.
Decision-making
Traditional approach
Choices are made based on averages, assumptions or occasional analyses.
Modern approach
Scenarios, KPIs and current measurement data make the trade-off more concrete and repeatable.
Follow-up
Traditional approach
Actions often stay non-committal or disappear into separate reports.
Modern approach
Follow-up actions, monitoring and reporting are linked to the same energy data.
How does a life cycle assessment work?
An LCA follows four fixed steps, laid down in the ISO 14040 and ISO 14044 standards. First you define the goal and scope: which question the study answers, which life stages count and what the functional unit is, for example one square metre of facade over fifty years. An analysis covering the full life cycle is called cradle-to-grave; if the study stops at the factory gate, it is called cradle-to-gate. The inventory follows: all inputs and outputs are collected, such as raw materials, energy use and emissions to air, water and soil. In the impact assessment those flows are translated into environmental effects, such as climate change, acidification and land use. A widely used assessment method is ReCiPe, developed by RIVM and Radboud University. Finally comes the interpretation: what the results mean and how sensitive they are to assumptions.
- Goal and scope: define the research question, system boundaries and functional unit.
- Inventory: map all raw materials, energy and emissions per life stage.
- Impact assessment: translate flows into environmental effects such as climate change and acidification.
- Interpretation: draw conclusions and test the sensitivity of assumptions.
What do companies use an LCA for?
Companies use an LCA to see where in the chain the largest environmental impact sits, and therefore where a different design, material or process pays off most. Anyone publishing an environmental claim also needs evidence. The European Commission developed the Product Environmental Footprint (PEF) for this, a harmonised LCA method with sixteen impact categories that builds on ISO 14040 and 14044. In Dutch construction the role is most concrete: the environmental performance calculation (MPG) of a building is mandatory when applying for an environmental permit and uses environmental declarations of construction products from the national environmental database (Nationale Milieudatabase), each based on an LCA. In civil engineering tenders, the environmental cost indicator (MKI) is weighed. Companies reporting under the CSRD also look at their entire value chain; LCA data provides product-level substantiation for that.
- Ecodesign: identify hotspots in the chain and improve them in a targeted way.
- Substantiate environmental claims, for example under the European PEF method.
- Construction: the mandatory MPG calculation relies on LCA data from the Nationale Milieudatabase.
- Civil engineering tenders in the Netherlands use the environmental cost indicator (MKI).
- CSRD reporting: LCA data substantiates environmental information about the value chain.
What are the limitations of an LCA?
An LCA is only as good as the data and the choices beneath it. For many processes only generic background data exists, which can deviate from your actual supplier or production site. System boundaries also steer the outcome: a study that stops at the factory gate paints a different picture than an analysis of the full life cycle. Comparison is therefore only valid with the same functional unit and the same calculation method. A full LCA also requires specialist knowledge and lead time: for inclusion in the Nationale Milieudatabase, a recognised LCA practitioner draws up the analysis and an independent review follows. Finally, every LCA is a snapshot. When production processes, energy sources or recycling options change, the outcome becomes outdated and a recalculation is needed.
- Generic background data can deviate from your actual chain.
- System boundaries and assumptions steer the outcome; always read them alongside the results.
- Comparison is only valid with the same functional unit and method.
- An LCA becomes outdated when processes or energy sources change.
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