Streamlined LCA vs Full LCA: Which One Is Right for My Product?

Life Cycle Assessment (LCA) is today one of the most reliable methods for evaluating the environmental impacts of a product or service, and this method is being adopted by a growing number of companies. But between a streamlined LCA and a full LCA, how do you choose the most suitable approach for your company, your product and the products it manufactures? Objective, scope, budget, deadlines, regulation: several criteria guide this decision. Qweeko helps you see clearly to make the right choice.

What Is Life Cycle Assessment? The Fundamentals You Need to Know

Life Cycle Assessment (LCA) is a standardized method (ISO 14040 and ISO 14044) that allows a company to evaluate and reduce the environmental impact of a product or service, from the extraction of raw materials to its end of life. This is the so-called "cradle to grave" approach, which makes it possible to integrate all the stages of the life cycle.

Each stage of the product's life cycle is analyzed to measure the environmental impacts of a product: raw material production, manufacturing, transport, the use phase, and finally end-of-life treatment. At each stage, flows of resources — energy, water, materials — enter and leave the system during their use, generating measurable environmental impacts.

LCA is today the essential reference tool for producing recognized documents such as PEP Sheets (Product Environmental Profile) and EPDs (Environmental Product Declarations), whose use is becoming widespread in construction and industrial tenders.

Full LCA: A Rigorous Method for Certified Results

Definition and Stages

A full LCA is the most exhaustive form of life cycle assessment. It follows the four stages defined by the ISO 14044 standard:

1. Definition of the objective and scope of the study: what do we want to measure, for which product or service, and to what extent?
2. Life Cycle Inventory (LCI): exhaustive collection of all input and output data at each stage
3. Environmental Impact Assessment (EIA): calculation of impacts on climate change, water consumption, acidification, etc.
4. Interpretation of results: critical analysis to guide company decisions

How to Carry Out a Full LCA?

To carry out a full LCA, the company must first establish an exhaustive life cycle inventory, then mobilize primary data (field measurements, supplier technical data sheets) and secondary data from recognized databases such as ecoinvent, the INIES database or the PEP ecopassport database, as the quality of each piece of data collected determines the reliability of the results. The software tool used must be able to model the entire system, each process and the entire life cycle.

The approach also involves verification by an independent third party, guaranteeing the reliability of the results.

When Should You Use a Full LCA?

It is recommended to use a full LCA in the following situations:

• You want to publish a verified and enforceable PEP Sheet or EPD for your product
• Your product is subject to regulatory requirements such as RE2020
• You are responding to public procurement or frameworks such as HQE, BREEAM or LEED
• You want to communicate credibly about your environmental impacts and integrate these results with your clients and partners
• The value chain of your product or service is complex and involves many manufacturing stages

Its Limitations

Carrying out a full LCA takes time — several weeks to several months depending on the complexity of the product — and requires specialized expertise. It is a significant investment for each product, but making this effort makes it possible to obtain results that are recognized in the most demanding markets.

Streamlined LCA: An Agile Tool to Guide Your Approach

Definition and Scope

A streamlined LCA is a simplified version of the method, but remains a recognized method for guiding environmental choices. It relies on generic data, a restricted framework and conservative assumptions. Rather than integrating and analyzing each stage of the product's life cycle with the same level of detail, it focuses on the stages generating the most environmental impacts — the so-called environmental "hotspots."

The objective is not to obtain certified results for each process, but to quickly obtain a sufficiently reliable picture to make informed decisions.

How to Carry Out a Streamlined LCA?

To carry out a streamlined LCA, the company primarily uses secondary data available in generic databases. The scope of the study is deliberately reduced to the most contributory stages, particularly those related to manufacturing. A suitable modeling tool allows first results on environmental impacts to be obtained within a few days to a few weeks.

When Should You Use a Streamlined LCA?

A streamlined LCA is particularly suitable in the following cases:

• You are in the design phase of a product and want to use LCA to guide your choice of materials or processes
• You want to quickly identify levers to reduce the environmental impact of your product or service
• You are conducting an internal eco-design approach and need a quick snapshot of your environmental impacts
• Your company wants to prioritize its efforts before committing to a full LCA on its highest-stakes products
• Your company faces budget or deadline constraints that do not yet allow a full LCA to be carried out

Its Limitations

A streamlined LCA cannot be used to publish a certified PEP Sheet or EPD. It cannot serve as the basis for external communication about your product without the risk of greenwashing — a growing concern in the context of the European Green Claims Directive. Its results are orders of magnitude, useful internally, but not legally enforceable.

Streamlined LCA or Full LCA: How to Decide?

The choice between the two methods depends above all on the objective your company wants to achieve and the scope of the envisaged approach, as each method responds to distinct needs.

Choose the streamlined LCA if your company is in an exploratory phase, if you want to use LCA as a design support tool, or if you need an initial environmental diagnosis to prioritize your actions without delay.

Choose the full LCA if your objective is to carry out and publish a PEP Sheet or EPD, to meet regulatory obligations, or to credibly and verifiably showcase the environmental impacts of your product or service.

In many cases, the two approaches are complementary: a streamlined LCA upstream helps guide product design and identify priority improvement points, while a full LCA downstream validates the results and produces the documents needed for external communication.

Qweeko Supports You at Every Stage of Your LCA Approach

At Qweeko, we support industrialists, manufacturers and engineering firms in carrying out their Life Cycle Assessment — as well as in generating PEP Sheets and EPDs that comply with current frameworks.

Whether your company is starting its environmental approach on a new product or needs certified results to respond to a market, our tool and expertise allow you to integrate reliable deliverables in the shortest possible time.

👉 Contact our team to define together the approach best suited to your product.