Sustainability requirements are migrating from the company to the product. Major buyers now ask for carbon data at the level of an individual SKU; regulators are converting product-level expectations into product-level rules. Three acronyms dominate those conversations — LCA, PCF and EPD. They are closely related, they share the same underlying data, and they are routinely confused. Picking the wrong one can cost months of work.
LCA — Life Cycle Assessment
Life Cycle Assessment is the foundational method, governed by ISO 14040 and ISO 14044. It quantifies a product's environmental impacts across multiple categories — climate, water use, resource depletion, acidification, toxicity and more — across its life cycle, either cradle-to-gate (raw materials to your factory gate) or cradle-to-grave (through use and end-of-life). A screening LCA uses secondary data to find hotspots quickly; a full LCA with independent critical review is required before you can make public comparative claims. LCA is the method everything else is built on.
PCF — Product Carbon Footprint
A Product Carbon Footprint is, in effect, the climate-only subset of an LCA, calculated to ISO 14067 (and the GHG Protocol Product Standard). It expresses a single product's greenhouse-gas emissions, most often cradle-to-gate for business-to-business use. PCFs are increasingly exchanged in standard digital formats such as the WBCSD PACT Pathfinder framework and, in automotive, Catena-X. A PCF is typically a business-to-business figure and is often not third-party verified.
EPD — Environmental Product Declaration
An Environmental Product Declaration is a third-party-verified, publicly registered declaration of a product's environmental impacts — a Type III declaration under ISO 14025, and, for construction products, EN 15804. It is built on an underlying LCA conducted to specific Product Category Rules (PCR), then independently verified and published through a programme operator. Green-building schemes such as LEED and BREEAM, and a growing list of public procurement policies, require EPDs as a condition of consideration. When a tender says EPD, a PCF will not substitute.
So which one do you need?
- A customer wants SKU-level carbon data in a scorecard or PACT/Catena-X format → a PCF.
- A green-building project, specifier or public tender asks for it → an EPD.
- You want to make a public environmental claim, or drive ecodesign and sourcing decisions → an LCA.
- A regulation requires a product-level declaration (for example, battery or product-passport rules) → a product-level PCF or declaration to the prescribed method.
Build once, use many
The decisive efficiency insight: all three share the same underlying data model. Build a robust LCA data foundation and a PCF becomes a view onto it, and an EPD becomes that view plus verification and a PCR. Companies that commission a PCF, then an EPD, then an LCA as three separate studies pay three times for one dataset.
Avoiding the claim trap
Public and comparative environmental claims carry rising regulatory risk. ISO 14044 requires a critical review for public comparative assertions, and anti-greenwashing rules — including the direction of travel in the EU — increasingly require the study behind a claim to be disclosed. Whatever you publish, make sure the evidence underneath it would survive a regulator or a competitor reading it closely.
Sources & further reading
This article is general information, not legal, financial or compliance advice. The regulations and standards referenced here evolve; verify the current position with the issuing body, or ask us. Published June 2026.