Sustainability

What is a Life Cycle Assessment (LCA) of a product?

Boris Landivar avatar Boris Landivar · · 9 min read
What is a Life Cycle Assessment (LCA) of a product?

Photo by Kevin Limbri on Unsplash

What is a Life Cycle Assessment?

Every product generates environmental data through its materials, energy consumption, transport, use and disposal. Life Cycle Assessment, or LCA, connects that information so companies can identify environmental hotspots, investigate costs and make better operational decisions.

Much of the information already exists in purchasing records, production systems, utility bills and supplier documents. The challenge is that teams often collect it for one assessment, then repeat the process when a customer requests product information or a designer wants to compare materials.

Structuring these records once makes them more useful across product development, procurement, savings analysis and applicable disclosures. LCA provides a method for turning that information into a clearer understanding of a product’s potential environmental impacts.

A Life Cycle Assessment evaluates the potential environmental impacts associated with a product or service within defined boundaries. These can extend from raw material extraction through manufacturing, distribution and use to end-of-life treatment.

The purpose is to identify where impacts arise and evaluate opportunities to improve the product system. Depending on the assessment, this can include climate change, water use, resource consumption and other environmental impact categories.

The ISO 14040 framework establishes the principles and structure of LCA, including goal and scope definition, inventory analysis, impact assessment and interpretation. ISO 14044 provides associated requirements and guidance.

An LCA is therefore broader than a product carbon footprint, which focuses on greenhouse gas emissions. Understanding a product’s environmental footprint helps teams select the indicators relevant to the decision they need to make.

Customers, governments and businesses increasingly expect environmental claims to have a clear basis. A well-documented assessment supports that transparency while helping companies investigate practical improvements.

Organizing the data behind an LCA

Dcycle is a data platform for collecting, structuring and reusing environmental information. Product assessments are one use of that information, alongside supplier evaluation, resource-efficiency analysis and operational decisions.

For an LCA, companies need records describing materials, quantities, manufacturing processes, energy, transport and end-of-life assumptions. Keeping those inputs organized makes it easier to understand the contribution of different materials, suppliers and life-cycle stages.

Dcycle supports product modelling and the comparison of scenarios involving materials, processes, transport and end-of-life treatment.

This helps teams investigate which inputs contribute most to the assessed impacts. Procurement can use the findings to identify where more specific supplier information is needed, while product teams can compare alternative designs.

The value of LCA software depends on the quality of the model and its inputs. Teams should retain the assumptions, data sources and boundaries behind each comparison.

Consider a manufacturer assessing a packaged product. Purchasing records provide material quantities, production records describe processing activities, and energy information supports the manufacturing model. Those records can also help Finance investigate expenditure and Operations evaluate resource efficiency.

The same information can serve several purposes without requiring separate collection exercises. Each calculation still needs the boundaries, allocation rules and methodology appropriate to its intended use.

Product information becomes more useful when a company can explain which stages are included, which impact categories were assessed and how the results were calculated.

Dcycle helps organize the information needed to describe impacts by material, supplier or process and investigate lower-impact alternatives. The platform supports the assessment process. The company remains responsible for reviewing its assumptions and ensuring that any public comparison or environmental claim is supported by the study.

How scope, detail and comparability affect an LCA

Not all LCAs answer the same question. Their usefulness depends on the relationship between the study’s purpose, boundaries and information quality.

The scope defines which activities and life-cycle stages are included. A cradle-to-grave study covers raw material extraction through end-of-life treatment. A gate-to-gate study focuses on a defined process or production stage.

A narrower scope can be appropriate for investigating a manufacturing improvement. It cannot, by itself, establish that the entire product has a lower life-cycle impact. The assessment should explain exclusions and any assumptions used to represent stages for which direct information is unavailable.

The level of detail depends on the study’s purpose and the information available. A broad cradle-to-grave assessment may rely partly on secondary datasets, while a narrower production assessment may use detailed measurements from individual processes. Broader boundaries do not automatically mean more precise information.

Companies should distinguish primary measurements, supplier-specific information, secondary datasets and estimates. Understanding ISO 14040 requirements helps teams define a study that is appropriate for its intended application rather than simply collecting as much information as possible.

Results are comparable only when the studies use compatible assumptions, boundaries and methods. The comparison should reflect the function the products provide. Comparing products solely by weight can be misleading if their durability, capacity or performance differs.

For example, packaging alternatives should be assessed against a consistent service requirement. The amount of packaging required to protect and deliver the product matters alongside the impact per kilogram of material. Relevant impact categories should also be considered consistently. A lower climate-change result does not necessarily mean lower impacts across every environmental category.

Main life-cycle models

Companies choose boundaries according to the assessment’s purpose. The choice should be documented, with conclusions limited to the stages actually assessed.

Cradle to grave

A cradle-to-grave assessment covers the product system from raw material extraction through production, distribution, use and end-of-life treatment.

It provides a broad view of where impacts occur and helps identify situations where an improvement in one stage creates an additional burden elsewhere. For example, a material change might reduce manufacturing emissions but increase maintenance requirements or shorten product life. A cradle-to-grave perspective helps investigate that trade-off.

Cradle to gate

A cradle-to-gate assessment covers raw material extraction and upstream activities through the point where the product leaves the production facility.

This can be useful for understanding manufacturing impacts and supplying environmental information to downstream business customers. It excludes later distribution, use and end-of-life stages unless the declared boundary states otherwise. Comparisons should make that limitation clear.

Gate to gate

A gate-to-gate assessment focuses on a defined process or production stage.

It can help companies compare machinery, production methods, energy sources or material losses within a particular operation. The findings can support process improvements and investment decisions. However, upstream and downstream effects need separate consideration before drawing conclusions about the complete product life cycle.

Product category assessment

A product category assessment examines products that perform similar functions, such as packaging systems or particular types of consumer goods.

This is a way of defining the subject of an assessment rather than a separate life-cycle boundary. A category study can use cradle-to-gate or cradle-to-grave boundaries, depending on its purpose. The approach can help identify recurring hotspots and improvement opportunities across a group of products.

For comparisons to be meaningful, the products need a consistent functional basis. Packaging alternatives, for example, should be compared in terms of the protection and delivery service they provide rather than simply as equal quantities of material.

Other approaches that are often confused with LCA

Some approaches examine specific parts of a life cycle or answer a different environmental question. Distinguishing them helps companies avoid selecting a method that cannot support the intended decision.

Well to wheel analysis

Well-to-wheel analysis examines energy use and greenhouse gas emissions associated with producing and using transport fuels or energy carriers. It combines well-to-tank activities, such as fuel production and distribution, with tank-to-wheel activities during vehicle operation.

The European Commission’s well-to-wheel methodology distinguishes this approach from a full vehicle LCA. It does not include every impact associated with manufacturing the vehicle, building infrastructure or managing end-of-life treatment.

It is useful for comparing fuel and powertrain pathways within its defined scope. It should not be presented as a complete assessment of every environmental impact of a vehicle.

Economic input-output LCA

Economic input-output LCA uses information about transactions between economic sectors together with environmental information to estimate upstream impacts.

It can help identify likely hotspots when detailed process information is unavailable. However, sector averages may not represent the specific technology, material composition or supplier involved in an individual product. Research on economic input-output methods explains how aggregation affects the detail available for product-level decisions.

This approach can support screening and prioritization. More specific information may be needed before choosing between closely matched designs or making detailed comparative claims.

Environmental Impact Assessment

Environmental Impact Assessment, or EIA, examines the likely environmental effects of a proposed project, such as a factory, road or other development.

It is distinct from product LCA. The European Commission’s project assessment overview explains that EIA concerns public and private projects and forms part of the relevant decision-making process.

Understanding the difference between EIA and LCA helps organizations select the appropriate assessment. A product study does not replace a project-level environmental assessment or its associated approval requirements.

Benefits of conducting a Life Cycle Assessment

LCA can give companies greater visibility over their products and supply chains. Its practical value comes from using the findings to inform action.

Identifying environmental hotspots

An LCA helps companies identify the materials, processes or life-cycle stages that contribute most to the assessed environmental impacts.

This can improve the prioritization of product design changes, supplier engagement and manufacturing improvements. Teams can focus on significant contributors rather than relying on assumptions about which stage matters most.

Dcycle’s published Lefrik example reports reductions of 38% in water use and 50% in emissions associated with its product assessment work. These are case-specific reported results, rather than an expected outcome for every LCA.

For water-related decisions, a water footprint assessment can add detail about the relevant inputs and methodology. Water consumption and water-related impacts should be interpreted in their geographic and operational context.

Investigating resource efficiency and costs

Environmental hotspots can overlap with inefficient use of energy, materials and other resources. An assessment may reveal opportunities to reduce production waste, improve material yields, change transport arrangements or investigate energy-intensive processes.

LCA results do not calculate financial savings automatically. Finance needs to evaluate the costs of implementation, expected operating benefits and any effects on product quality or performance.

The published Pozzi Industries example reports savings of up to 80% in environmental management time and costs through its use of Dcycle. That administrative efficiency claim should be distinguished from reductions in the environmental impact of a particular product.

Connecting supplier information with purchasing and production records helps teams investigate both questions. Better information can reduce repeated collection work while also supporting procurement and process decisions.

Supporting customer and regulatory information

Product assessments can provide evidence for environmental information requested by customers, procurement teams or applicable product requirements.

The intended use should be defined at the beginning. A study prepared for internal improvement may need additional work before it can support a public comparison, environmental declaration or specific procurement criterion.

The Ticnova example describes the use of 2 product LCAs to support regulatory evaluation. The broader lesson is to connect the assessment with the exact evidence requirements of the relevant process.

Developments in EU ecodesign requirements reinforce the importance of organized product information. Companies still need to check which measures apply to their product category and when.

Compliance is one possible output. The same underlying material, energy and supplier records can also support product development, savings analysis and operational planning.

Communicating credible environmental claims

A documented LCA can help companies explain their product choices and demonstrate the basis of environmental claims.

Credible communication should identify the assessed product, functional unit, boundaries, impact categories and relevant limitations. A reduction in one indicator should not be described as an improvement across all environmental impacts.

The Blue Banana assessment illustrates how measurement can help a fashion business investigate its value chain and communicate its environmental work.

The company’s wider strategy also included emissions reductions and offsetting. Those activities should remain distinguishable, and a historical carbon-neutral or carbon-negative claim should not be treated as proof that the product has no environmental impact.

Transparent information can support relationships with customers, employees and investors. The commercial result depends on how the company uses that information and delivers improvements.

Conclusion

Life Cycle Assessment helps companies understand where their products create environmental impacts and which changes deserve closer investigation.

Its value extends beyond producing a study. Material quantities, energy records, supplier information and transport assumptions can support product design, purchasing decisions, cost reviews and applicable disclosures.

The strongest approach begins with a clear question, suitable boundaries and reliable environmental data. Comparisons should reflect equivalent functions, and conclusions should remain consistent with the scope and quality of the assessment.

Dcycle helps companies organize that information and reuse it across product assessments and everyday business needs. If your teams are rebuilding the same records for each request, connecting those sources is a practical starting point for more consistent measurement and better operational decisions.

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