Product Carbon Footprint: how much does what you make really weigh?

A bottle of mineral water. A pair of jeans. A coil of steel sheet. A packaged pharmaceutical. Very different products, but all with something in common: each carries a precise, measurable climate footprint, running from raw material extraction to wherever it ends up after use. That measure is called the Product Carbon Footprint, abbreviated as CFP or PCF, and over recent years it has shifted from a voluntary reporting exercise to a piece of data that is expected, requested and, in a growing number of contexts, legally required.

The reference standard, ISO 14067:2018, has existed for years and defines precisely how to quantify the greenhouse gas emissions associated with a product across its lifecycle. What has changed is the context in which that measure is used. The ESPR Regulation and the Digital Product Passport are making it a mandatory element of technical documentation across entire industrial sectors. The CBAM is incorporating it into the calculation of emissions embedded in goods imported into the European Union. The CSRD invokes it in the calculation of Scope 3 emissions. And the ECGT Directive on environmental communications transforms it into the scientific prerequisite for any climate claim on a product that must withstand scrutiny.

This article explains how product carbon footprinting works, why the choice of analysis boundary is not a technical footnote but a decision with precise operational consequences, and where it intersects with the regulations currently reshaping access to the European market.

 What the Product Carbon Footprint measures

The product CFP is the sum of all greenhouse gas emissions (CO2, methane, nitrous oxide, HFCs and other climate-altering gases, converted to CO2 equivalent) generated across the lifecycle phases of a good or service. It is not the company's carbon footprint: it is the carbon footprint of that specific unit of product, calculated following the Life Cycle Assessment (LCA) methodology under ISO 14040 and ISO 14044 standards.

The difference from the organisational carbon footprint is substantial. When a company calculates its own carbon footprint, it measures all emissions generated by its activities over a year: its plants, vehicles, electricity consumed, business travel, supply chain. When it calculates the PCF, it measures the emissions associated with a single functional unit, such as one kilogram of fabric, one square metre of panel, one 75cl bottle, one mechanical component. The two calculations feed each other, but answer different questions and produce results that are not directly comparable.

The result is expressed in kg of CO2 equivalent per functional unit: for example, 2.3 kg CO2e per square metre of fibreglass panel, or 8.6 kg CO2e per pair of conventional cotton jeans. These numbers allow comparison of similar products, identification of where impact concentrates along the supply chain, more informed design decisions, and external communication with a verifiable scientific basis.

Cradle to gate, cradle to grave: the boundary is not a detail

One of the most consequential choices in calculating a product CFP concerns the boundary of the analysis: how far the lifecycle study extends. Two main approaches alternate in practice, each with specific uses and different implications.

Source: UNI EN ISO 14067:2018; RINA Carbon Footprint

For a company that produces rolled steel and sells it to other manufacturers, the cradle to gate approach is almost always the appropriate one: the end use of the material does not depend on the producer, occurs in very different contexts and is often not traceable. For a brand selling garments directly to consumers, cradle to grave tells a more complete story and communicates the total impact of the product across its actual lifecycle.

 There is an aspect that many simplified calculations tend to undervalue: the use phase. For some products, such as a car or a household appliance, the emissions generated during use represent the largest share of total footprint. For others, such as a brick or a garment, the greatest impact concentrates in the production phases. Knowing this distribution is not just useful for reporting: it is the map on which any credible reduction strategy is built.

Choosing the wrong boundary does not produce an imprecise PCF: it produces an unusable one. A number calculated on production does not answer the questions of someone evaluating the full lifecycle. ​

How it is calculated: the LCA methodology applied to the product

The calculation of a product’s CFP follows a structured, phased process, which is precisely defined in the ISO 14067 standard.

Definition of the scope and functional unit. Before collecting a single piece of data, it is necessary to establish what is being measured (which product, which version, which process) and in what unit (one kilo, one metre, one pack, one hour of service). The functional unit is not arbitrary: it must reflect the main function that the product performs, so that comparisons with other products are scientifically valid. Two shoes with soles made of different materials can only be compared correctly if both CFPs use the same functional unit. Translated with DeepL.com (free version)

Collection of inventory data. For each life-cycle stage included within the scope, quantitative data is collected: how many kilograms of raw materials, how many kWh of energy, how many litres of water, how many kilometres of transport, by what means, how many kilograms of waste produced and where it is sent. Some of this data comes from the company itself (primary data), whilst some comes from international reference databases such as ecoinvent or the ADEME Carbon Database (secondary data), which are used for those stages for which no direct measurements exist.

Calculation of emissions. Inventory data are multiplied by the corresponding emission factors. Every production process, every mode of transport and every raw material has an associated emission factor that converts the physical quantities into CO₂ equivalent. The sum of all these emissions, broken down by life-cycle stage, produces the final result.

Verification and certification. To ensure the data is meaningful for communication purposes, the calculation must be verified by an independent third party. ISO 14067 stipulates that external verification is a requirement for public communications regarding the CFP. This is precisely what distinguishes a product CFP from an internal estimate: not the figure itself, but the ability to demonstrate how it was arrived at and that it has been checked by an independent party.

The regulatory framework: where product-specific CFP becomes mandatory

Until a few years ago, the product CFP was almost entirely voluntary. Companies calculated it to communicate their climate commitment, differentiate themselves with sustainability-minded consumers, or respond to requests from specific corporate clients. The European regulatory framework is changing this landscape significantly and relatively quickly.

Sources: Regulation (EU) 2024/1781 (ESPR); Regulation (EU) 2023/1542 (Batteries); Regulation (EU) 2023/956 (CBAM); Directive (EU) 2026/470 (Omnibus-CSRD); Directive (EU) 2024/825 (ECGT); Italian Procurement Code D.Lgs. 36/2023 (CAM)

Two pieces of legislation warrant specific attention in order to understand how the Product CFP fits in, in practical terms, with the operational requirements that companies are already receiving or will receive shortly.

The Digital Product Passport (DPP) and the ESPR. EU Regulation 2024/1781 (ESPR) introduced the Digital Product Passport as a mandatory digital document for almost all physical goods placed on the European market. Among the data that the DPP must contain, the product’s environmental performance (including its carbon footprint) plays a central role. For batteries, the requirement is already in force with quantitative thresholds; for steel and cast iron, the first delegated acts are expected in 2026; for textiles, clothing and aluminium in 2027; and for furniture in 2028. The CFP is not just one of many pieces of data in the PEP: it is the figure that many supply chains and buyers will look at first when they access the passport.

The Batteries Regulation as a laboratory for the future. Regulation (EU) 2023/1542 on batteries provides the framework within which the concept of mandatory product carbon footprint is already fully operational. For batteries intended for electric vehicles, industrial applications and portable electronic devices, the Regulation requires not only the calculation of the CFP, but also the public disclosure of the data and compliance with maximum carbon intensity thresholds that will gradually come into force. In this sense, the Battery Regulation is a full-scale test of what the ESPR will bring to other sectors.

 What does the product CFP reveal that other indicators do not?

There is one aspect of a product’s carbon footprint that consistently emerges in practice but is rarely mentioned in theoretical descriptions of the tool: the calculation reveals impact distributions that defy expectations, even for those who know their product well.

In the textile sector, repeated LCA studies on conventional cotton products show that between 60 and 70 per cent of total emissions are concentrated in cotton cultivation and in the dyeing and finishing stages of the fabric, not in transport or packaging. For a brand seeking to reduce its product’s environmental footprint, this means that the most strategically significant decisions relate to the selection of the fibre supplier and the dyeing process, rather than last-mile logistics.

In the construction materials industry, process emissions (in particular the decarbonisation of limestone in cement production) account for a structural component of the carbon footprint that cannot be eliminated through energy efficiency, but only through carbon capture or process substitution. Knowing where this component lies before designing a reduction strategy completely changes the assessment of the available options.

In the food and beverage sector, packaging often accounts for a share of the environmental impact that is underestimated, but the most critical factor is often refrigerated logistics: the energy consumption required to maintain the cold chain in some supply chains exceeds the emissions generated by the entire production process.

A well-designed product CFP is not a photograph. It is a map of the impact: it shows where the impact is concentrated, which phase carries the most weight, and where strategic action yields the greatest reduction.

Questo è il motivo per cui la CFP di prodotto, quando viene usata internamente come strumento decisionale invece che solo come documento di compliance, produce ritorni che vanno oltre la sostenibilità. Un'azienda che sa dove si concentra il 70% del suo impatto climatico ha identificato anche dove si concentrano inefficienze, dipendenze critiche dalla filiera e costi potenzialmente ottimizzabili. La riduzione dell'impronta carbonica e la riduzione dei costi di produzione spesso puntano nella stessa direzione.

Product CFP and the issue of communication: when a number is enough and when it isn’t

Disclosing a product’s carbon footprint is the most visible use of this tool, but also the most sensitive. The ECGT Directive (Green Claims Directive, EU Directive 2024/825), which introduced stringent rules on environmental communications to consumers, requires that any climate-related claim about a product be based on recognised scientific methodologies, verified by an independent third party, and not be vague or misleading.

In this context, a CFP calculated in accordance with ISO 14067 and verified by an accredited certification body is precisely the kind of evidence that makes environmental communication defensible. Not because the figure is perfect (every LCA involves methodological choices that an expert might question), but because it is transparent: the recipient can request the supporting report, understand the assumptions and verify the data sources.

The problem arises when the CFP is reported without context. Is a product with 2.3 kg CO₂e per square metre a lot or a little? Compared to what? Compared to the industry average? Compared to the previous version of the same product? Compared to an alternative material? The figure on its own does not answer these questions. However, it does provide a verifiable answer when it is part of a more structured declaration system, such as an EPD (Environmental Product Declaration) for the construction sector, or when it is explicitly compared with the category average.

The operational challenge: where to start

For many organisations, the most pressing question is not a theoretical one but a practical one: how do you actually get started? There are a number of preliminary decisions that will shape all the work that follows.​

Select the product or products to be analysed. There is little point in calculating the CFP for an entire catalogue before you have gained some experience with the tool. Start with the product that best represents your turnover, the product for which you are receiving customer enquiries or for which regulatory requirements are due to come into force, or the product where you suspect the impact is concentrated in areas that can be optimised.

Collecting inventory data. This is the most time-consuming stage and the one most often underestimated. Data on a company’s internal processes (energy consumption, materials used, waste produced) is generally available, although not always in a format that can be aggregated. Data on suppliers is much more difficult to obtain: requesting process inventory data from suppliers often reveals just how opaque the supply chain is, even to those who manage it on a daily basis.

Selection of the emission factor database. For secondary data (data that cannot be measured directly), the choice of reference database affects the final result. The main international databases used are ecoinvent, the ADEME Carbon Database and the DEFRA factors. The choice depends on the geographical scope of the analysis and the requirements of any applicable Product Category Rules (PCR).

Review and update. A CFP that has been calculated once and filed away quickly loses its value. The energy mix of suppliers changes, raw materials change, and production processes change. The standard recommends an update every two or three years, or whenever significant changes in the production process or supply chain account for more than 10 per cent of the impact.

At Kyklos Carbon, we support organisations throughout this process: from selecting the product to be analysed to collecting and organising inventory data, and from building the LCA model to verifying the results. We use up-to-date databases (ADEME Carbon Database, ecoinvent, DEFRA) and methodologies consistent with ISO 14067, the GHG Protocol Product Standard and the applicable sector-specific PCRs.