Food Loss and Waste Day: Why Food Waste Is Becoming a Scope 3 and Disclosure Problem

Food loss and waste generates 8 to 10 per cent of annual global greenhouse gas emissions. Aviation, for comparison, accounts for roughly 2.5 per cent of global CO2 emissions, or 3.5 to 4 per cent of warming to date once contrails and other non-CO2 effects are counted. One of those two gets the column inches.

Today is the International Day of Awareness of Food Loss and Waste. Awareness days usually come and go without consequence. This one now sits on top of a binding EU directive that entered into force last October, a 2030 deadline, and a greenhouse gas accounting problem that most food companies have booked in the wrong place.

The Numbers Behind The Day

UNEP's Food Waste Index Report 2024 put global food waste at 1.05 billion tonnes in 2022, including inedible parts. That is almost one fifth of all food available to consumers.

The split matters for anyone deciding where to intervene. Households accounted for 60 per cent, food service for 28 per cent and retail for 12 per cent. Household waste came to 132 kilograms per capita.

For Indian readers, the index puts household food waste at 55 kilograms per capita, or 78.2 million tonnes a year. Before that number goes into a client deck, know what sits behind it. UNEP built the India estimate from seven sub-national studies conducted between 2014 and 2018, with small sample sizes and differing methodologies, a limitation WRI India has pointed out publicly. It is the best available figure, which is not the same as a reliable one, and UNEP itself cautions against reading the index as a country league table.

None of this is new information. What is new is that it has started attaching to obligations.

Where Food Waste Actually Lands In A GHG Inventory

This is the part companies get wrong, and the error is structural rather than careless.

Three places in a Scope 3 inventory touch food waste.

Category 1, purchased goods and services, already contains the emissions from growing, processing, packaging and transporting every tonne of food a company bought. Whether that food was sold, eaten or thrown in a skip makes no difference to Category 1. The emissions happened at production.

Category 5, waste generated in operations, covers emissions from third-party disposal and treatment of waste generated in the company's owned or controlled operations during the reporting year. Waste treated at facilities the company itself owns or controls falls outside Category 5 and belongs in Scope 1 and 2. Transport of waste by a third party is optional to include.

Category 12, end-of-life treatment of sold products, covers disposal of products the company sold, plus their packaging, across the expected end-of-life. Because no manufacturer can observe what consumers actually do, this category requires assumptions about the proportion landfilled, incinerated or recycled, drawn from consumer research, government data or industry averages.

Now the mis-booking.

A food manufacturer reports its food waste tonnage, calculates a Category 5 figure for disposal, and considers the topic covered. But Category 5 only captures what happens to the material after it becomes waste, which is the smaller emissions component. The larger component sits in Category 1, attached to food that was grown, shipped and chilled and then never eaten.

The practical consequence inverts the usual intervention logic. Switching disposal from landfill to anaerobic digestion improves your Category 5 number and does nothing to Category 1. Reducing the volume that becomes waste in the first place barely moves Category 5 and cuts Category 1 materially, because you buy less.

Companies that set a food waste target and report it against Category 5 are measuring the wrong lever and will report progress that does not show up where the emissions actually are.

The EU Made It Binding Last October

Directive (EU) 2025/1892, the targeted revision of the Waste Framework Directive, entered into force on 16 October 2025. Member states have 20 months to transpose it.

It sets the EU's first binding food waste reduction targets, to be met by 2030 against an annual average for 2021 to 2023, or 2020 where a member state notified that reference period:

• 10 per cent reduction in food processing and manufacturing

• 30 per cent reduction per capita at retail and consumption, covering restaurants, food services and households

A tourism correction factor is due by 17 October 2027, recognising that a country hosting large visitor numbers generates food waste that its own population did not. By the end of 2027 the Commission must review whether the targets should be modified or extended to other stages of the chain, primary production in particular, and assess possible 2035 targets.

The directive also strengthens food donation, requiring member states to facilitate it and obliging relevant businesses to propose agreements with food banks.

Read the structure carefully. These are member state targets, not company targets. No individual manufacturer is directly bound by the 10 per cent figure. But member states reach national targets through national measures, and those land on the companies generating the waste. The donation obligation lands on businesses directly.

Primary production sits outside the targets for now. Given the 2027 review clause, agricultural suppliers should not read that as permanent.

Buyers Are Already Asking, As Usual

The Consumer Goods Forum's Food Waste Coalition of Action asks members to publicly commit to halving food waste in their own operations by 2030, to measure and publicly report it using the Food Loss and Waste Standard, and to work with suppliers on reductions across the chain.

As of May 2026, participating companies reported a 22 per cent reduction in average company-level food waste intensity against 2021. That is a real number moving in the right direction, and it is being generated voluntarily, ahead of any binding corporate requirement.

The 10x20x30 model is the mechanism worth understanding, because it is how the obligation travels down a supply chain. It is not a Consumer Goods Forum invention. Champions 12.3, the coalition named after SDG target 12.3, which commits to halving per capita food waste at retail and consumer level and reducing food losses along production and supply chains by 2030, launched it at its 2019 summit in New York, with the World Resources Institute providing technical support.

The structure is in the name. Ten or more of the world's largest food retailers and providers each engage at least 20 of their own suppliers, all working to halve food loss and waste by 2030 under a Target, Measure, Act framework. A supplier with no regulatory duty acquires a contractual one through its customer, and the measurement standard arrives attached to it.

In the UK, WRAP's Courtauld Commitment 2030 runs the same play with a different signatory list.

By now the pattern across every topic in this series is familiar. The voluntary buyer ask arrives before the regulatory obligation, and it arrives with a specified methodology attached.

The Measurement Standard Nobody Reads Carefully

The Food Loss and Waste Accounting and Reporting Standard was published in June 2016 by the Food Loss and Waste Protocol, a partnership led by the World Resources Institute alongside FAO, UNEP, WRAP, the Consumer Goods Forum, FUSIONS and WBCSD. It is the standard the Consumer Goods Forum commitment points at, and it is short.

It requires four scoping decisions before a single tonne is counted: the timeframe, the material type, the destination, and the boundary.

Destination is where most inventories fall apart. Food redistributed to people, diverted to animal feed, sent to anaerobic digestion, composted, or landfilled are all food leaving the supply chain, and they carry entirely different climate profiles and entirely different reputational readings. A company reporting a single food waste tonnage with no destination breakdown has published a number that cannot be interpreted.

Material type is the second trap. Whether you count inedible parts, peel and bone and shell, changes the total dramatically. UNEP's 1.05 billion tonne figure explicitly includes them. A company that counted edible food only in year one and everything in year two has manufactured a spike out of a definitional change, and a company that did the reverse has manufactured a reduction.

The standard includes a quantification method ranking tool for choosing between direct weighing, mass balance, waste composition analysis and proxy data. The method matters less than declaring it and keeping it stable.

The Disclosure Reconciliation Problem

For companies reporting under ESRS, food waste surfaces in two standards at once.

E5 covers resource outflows and waste where resource use and circularity are material under double materiality assessment. For a food retailer, manufacturer or processor, that outcome should be assumed rather than hoped against. E1 covers the greenhouse gas inventory, including the Scope 3 categories discussed above.

So the same underlying physical flow produces a waste tonnage in one disclosure and an emissions figure in another, and a reader can compare them. In most published reports they do not reconcile, because the waste tonnage came from facilities management and the Scope 3 figure came from a carbon accounting platform using spend-based or average-data factors that never touched the waste records.

Assurance providers will find that gap. It is exactly the kind of internal inconsistency limited assurance is designed to surface, and it does not require any subject matter expertise to spot.

What To Do With This

Find out where your food waste emissions are actually booked. If the answer is Category 5 only, your inventory is understating the issue and your reduction target is pointed at the wrong number. The Category 1 consequence of waste reduction is the material one.

Declare your destinations. Split the tonnage across redistribution, animal feed, anaerobic digestion, composting, landfill and incineration. Without that split the number carries no information.

Fix material type before you set a baseline. Decide whether inedible parts are in or out, write it down, and do not change it. A baseline that shifts definition is not a baseline.

Reconcile E5 and E1 before someone else does. Take the waste tonnage from the operational records and the Scope 3 figure from the carbon platform and check whether they describe the same physical flows. If they do not, you have a year to fix it quietly.

If you supply the EU, watch the 2027 review rather than the 2030 target. The review decides whether primary production comes into scope. Agricultural and first-stage processing suppliers have a stronger interest in that decision than in the current numbers.

If you supply a large retailer or food manufacturer, expect the 10x20x30 approach. The request will name the FLW Standard, and answering it properly takes longer than the notice period usually allows.

The thing that makes food waste unusual among sustainability topics is that the business case and the climate case point the same direction without any trade-off. Food that is never sold is inventory written off. The companies treating it as a disclosure exercise are missing that the measurement work pays for itself, which is not something that can be said about most of what appears in a sustainability report.

Position as of 29 September 2026. Directive (EU) 2025/1892 requires national transposition and member state implementation will vary. GHG Protocol Scope 3 category guidance is subject to the ongoing consolidation of GHG Protocol and ISO standards. ESRS requirements reflect the revised standards and their application dates. UNEP Food Waste Index estimates carry varying confidence levels by country. Confirm current requirements against the European Commission, GHG Protocol, EFRAG and your national authorities, and take professional advice for your circumstances.

Sources

United Nations Environment Programme, Directive (EU), European Commission, World Resources Institute, WRI India, Our World in Data, WRAP, European Financial Reporting Advisory Group, ESRS, Sustainable Development Goal 12.3

This article is intended for general professional information and does not constitute legal, financial, or investment advice.