Are Product Carbon Footprints Mandatory?
Everybody is talking about Product Carbon Footprints (PCFs). But do you really need a PCF and what is the difference to an LCA or our corporate sustainability report?
State of PCF in 2026
Most industry verticals, with the exception of the battery sector, do not yet have mandatory PCF laws in place. Voluntary frameworks like PACT are filling the gap, and more companies are publishing footprints every quarter. The pull comes mostly from large buyers that source from many suppliers and need to understand their supply chain emissions in detail. At Niatsu we see this shift directly with our food industry customers, where PCF requests from downstream brands have become a regular part of the commercial conversation.
The mechanism is simple: when a large company buys a product, those emissions land in its Scope 3 inventory, which is usually the largest of the three scopes by a wide margin. Knowing the PCF of each input lets the buyer aggregate emissions on delivery volumes. If a company sources 10'000 bottles of Coca-Cola, it multiplies 10'000 by the PCF of one bottle and gets a precise emissions figure for that purchase. Without supplier-specific PCFs, buyers fall back on industry averages, which are less precises and make it harder to implement actions.
Do you Need a PCF?
Three things tend to trigger the first PCF project. The most concrete is a direct customer request, often from a large brand or retailer that is tightening its own Scope 3 reporting. If this has already happened to you, the question is no longer if but how fast you can respond.
The second trigger is strategic: if you are developing new products or reformulating existing ones, a PCF lets you bake carbon thinking into the product itself and build internal expertise that competitors will not have.
The third is regulatory. Mandatory PCF requirements are not in place for most sectors today, but the direction of travel is clear, and it is realistic to expect the first customer requests within the next 18 months for many product categories in the food industry. If none of these apply yet, you have time. If one does, the work is best started now, because a credible PCF takes weeks, not days, and the data collection is the part that cannot be rushed
PCF vs LCA vs Corporate Sustainability report
These three terms often get confused, but they serve very different purposes. A Life Cycle Assessment (LCA) is the scientific backbone: a comprehensive, standardized analysis (ISO 14040/14044) of all environmental impacts of a product across its entire lifecycle.
An LCA goes beyond carbon and can cover water use, land use, toxicity, and more. A Product Carbon Footprint (PCF) is essentially a carbon-focused slice of an LCA. It uses the same methodology but narrows the scope to greenhouse gas emissions only, expressed in kg CO2e.
This makes it faster to produce, easier to communicate, and directly comparable across suppliers. A Corporate Sustainability Report, on the other hand, operates at the company level. It aggregates your Scope 1, 2, and 3 emissions across all activities, often following frameworks like GHG Protocol or GRI.
How to calculate a PCF?
Calculating a PCF follows a defined process, typically aligned with standards like ISO 14067 or the PACT framework, and this is exactly the methodology Niatsu applies for its customers. The first step is defining the functional unit and system boundary, meaning what exactly is being measured and where the product's lifecycle begins and ends.
Niatsu usually recommends a "cradle-to-gate" PCF, which covers raw material extraction through production but stops before distribution and use. For B2B suppliers in the food industry, this is the most practical choice, since customers can then add their own downstream data on top of the Niatsu result.
Next comes data collection: gathering activity data for each lifecycle stage, including energy consumption, material inputs, transport distances and waste, and pairing these with emission factors from emission databases. This is where Niatsu adds real value, because the quality and specificity of the data directly determine the credibility of the result, and the Niatsu platform is built to connect your input values with emission factors automatically.
For most companies, the first PCF takes months to produce - with Niatsu you can get the first PCF of your food products in a couple of hours.