More and more companies are talking about sustainability. But they’re not all talking about the same thing and the difference matters.

In the context of the blue bioeconomy, three concepts are appearing with growing frequency: carbon footprint, Life Cycle Assessment (LCA) and Environmental Product Declaration (EPD). They are often confused, used interchangeably, or treated as synonyms.

They are not. And understanding the difference is increasingly relevant, to respond to clients, to comply with regulation, and to make better decisions.

Carbon footprint: an indicator, not the full picture

A carbon footprint measures the greenhouse gas emissions associated with a company, product or activity, expressed in CO₂ equivalent.

It’s a useful indicator, widely recognised and comparable. But that’s all it is: an indicator. It measures a single dimension of environmental impact, carbon emissions, even when the scope covers the entire value chain, upstream and downstream (the so-called Scope 1, 2 and 3 that the CSRD already requires).

It doesn’t answer questions about water consumption, land use, impact on biodiversity, eutrophication or toxicity. To get that full picture, a different approach is needed.

LCA: the full picture

Life Cycle Assessment goes further. It assesses the environmental impacts of a product across all stages of its existence (from raw materials to end of life) and across multiple impact categories simultaneously: carbon, water, energy, land use, eutrophication, toxicity, among others.

LCA doesn’t replace the carbon footprint: it puts it in context. Carbon becomes one of several categories analysed, rather than the only indicator available.

This makes it possible to identify where the impact really is greatest, which isn’t always where a company assumes. In the blue bioeconomy, this detail is especially relevant: products that appear sustainable on the surface may have significant impacts at less visible stages of the chain, in the sourcing of raw materials, in transport, in additives.

EPD: communicating with credibility

An Environmental Product Declaration (EPD) is the step that follows LCA.

Based on the data generated by the study, the EPD communicates a product’s environmental performance in a standardised, transparent way, verified by an independent body. It is published in recognised international registries and allows comparisons between equivalent products.

Put simply: the LCA produces the data. The EPD communicates it credibly.

EPDs are already mandatory in some sectors and markets, notably in construction, and are gaining growing relevance in food, animal nutrition and the bioeconomy in general, as European regulatory pressure increases.

What’s changing in Europe

European regulation is making these concepts increasingly less optional.

The Empowering Consumers for the Green Transition Directive (EmpCo, Directive (EU) 2024/825) will ban generic environmental claims, such as “eco-friendly”, “green” or “sustainable”, where they are not backed by verifiable evidence. Unlike the Green Claims Directive, EmpCo has already been adopted: it had to be transposed into national law by 27 March 2026 and applies from 27 September 2026. LCA is one of the recognised methodologies for substantiating such claims.

(The proposed Green Claims Directive, which would have added a pre-market verification system, has been on hold since June 2025, with no formal outcome.)

The CSRD (Corporate Sustainability Reporting Directive) requires companies above a certain size to report environmental impacts in a structured and auditable way. LCA can be a relevant contribution to this reporting,  and all the more comprehensive the greater the number of products analysed. A company that carries out LCA across its entire range will have a very solid database for a robust report.

The PEF (Product Environmental Footprint) is a European Commission methodology, based on LCA, that is being progressively integrated into product policy and environmental labelling.

These three initiatives have different timelines, but they point in the same direction: environmental credibility will be increasingly required and increasingly verified.

Three concepts, one logic

Carbon footprint, LCA and EPD are not competitors. They are complementary  and follow a natural progression.

You measure the carbon footprint to get a first indicator of emissions. You carry out an LCA to get the full picture of environmental impact. You develop an EPD to communicate that picture in a recognised and verified way.

For blue bioeconomy companies that want to meet today’s market demands and anticipate tomorrow’s, understanding this progression is the starting point.

B2E CoLAB supports companies at every one of these stages.

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