LCA Explained: How Food Businesses Use Life Cycle Assessments

For food businesses, climate impact isn't shaped by a single decision. It's shaped by ingredients, farming methods, processing, transport, storage, cooking, and waste. LCA is the method that brings all of that into focus—and the scientific foundation that makes carbon footprint data defensible in reporting, procurement, and disclosure contexts.

What Is a Life Cycle Assessment (LCA)?

A life cycle assessment is a standardized method for measuring the environmental impact of a product or process across its entire life cycle. In food systems, that typically includes:

Agricultural production
Processing and packaging
Transportation and storage
Preparation and consumption
Waste and disposal

Rather than examining one stage in isolation, LCA captures the full picture. Two international standards govern the methodology: ISO 14040 and ISO 14044, which define the framework for conducting and reporting life cycle assessments. Where the focus is specifically on greenhouse gas emissions, ISO 14067 governs the calculation of a product's carbon footprint using LCA principles.
This standards alignment matters in practice. When food businesses use LCA-based emission factors for Scope 3 reporting or sustainability disclosures, the ISO references are what makes the methodology auditable and comparable across organizations.

Why LCAs Matter In the Food Industry

Food systems behave differently from most other industries. Emissions are rarely dominated by buildings or energy use—they're driven by what is produced, how it's produced, and which ingredients are used. Research consistently shows that the majority of food-related emissions occur during production, not during transport or packaging.

That's why intuitive assumptions—that local is always better, or that food miles are the dominant factor—often fall apart under scrutiny. LCA replaces those assumptions with measurement.
What LCA reveals that intuition misses is the scale of difference between ingredient categories. Producing one kilogram of beef generates many times more greenhouse gas emissions than producing one kilogram of legumes. Those differences are driven by farming practices, feed, land use, and biological processes—factors that are entirely invisible without life cycle data. The same pattern holds within categories: the same ingredient sourced from different regions or production systems can carry significantly different footprints.

This is why LCA is used to identify climate hotspots in recipes and product portfolios, compare ingredients on equal terms, and understand the trade-offs between nutrition, cost, and climate impact. Without it, these decisions are guesswork.

What an LCA Measures in Food Systems

Most food-related LCAs assess a combination of:

• Greenhouse gas emissions (CO₂e)
• Energy use
• Land use
• Water consumption

For food businesses focused on climate reporting, the greenhouse gas component—calculated under ISO 14067—is typically the most operationally relevant. This is the value expressed as CO₂e per kilogram of ingredient or per portion, which feeds directly into dish-level carbon footprints and Scope 3 calculations.

For a detailed walkthrough of how these values are applied in practice, see How to Calculate the Carbon Footprint of Food.

LCA, Scope 3 Reporting, and CSRD

The connection between LCA and corporate reporting is direct and increasingly consequential.
Scope 3 Category 1—purchased goods and services—covers the emissions embedded in everything a food business buys. For most food companies, this represents 80–90% of their total disclosed footprint. Calculating it accurately requires ingredient-level emission factors derived from LCA research. Without that foundation, Scope 3 estimates rely on spend-based approximations that can't support reduction planning or withstand audit scrutiny.

Under the CSRD, large food businesses are now required to report Scope 3 emissions with a level of rigor that spend-based methods don't support. LCA-backed, ingredient-level data is what makes that disclosure credible, and what makes the underlying numbers defensible when suppliers, auditors, or procurement teams ask how they were derived.

For more on how LCA data feeds into Scope 3 reporting frameworks, see Ingredient-Level Data for Accurate Scope 3 Reporting and Scope 3 Reporting for the Food Industry.

How Food Businesses Use LCA in Practice

LCA isn't a research exercise—it's used operationally across the food industry. Common applications include:

• Comparing ingredients and suppliers on a consistent emissions basis
• Identifying which dishes or products carry the highest climate impact
• Designing lower-impact menus and product ranges
• Supporting Scope 3 emissions reporting and CSRD-aligned disclosures
• Communicating verified climate data to clients, guests, and procurement partners

In each of these contexts, LCA connects sustainability strategy to operational decisions—which ingredients to prioritize, which suppliers to develop, which recipes to optimize first.

Where Klimato's Data Sits in the LCA Framework

Klimato's emission factors are built on systematic literature reviews aligned with ISO 14067 and the broader LCA standards ISO 14040 and ISO 14044. The database covers 4,000+ ingredients across 100+ countries, with multiple emission factor variations per ingredient rather than blended averages. Methodology is reviewed by the Swedish Environmental Research Institute (IVL) and validated against the Coolfood Methodology (WRI).

This means the LCA-derived data powering Klimato's calculations meets the same methodological standards as the frameworks food businesses are required to report against—which is what makes the outputs usable for CSRD disclosures, procurement tenders, and sustainability commitments rather than just internal tracking.

For more on the methodology, see the Science & Data page.

FAQ: Life Cycle Assessment in the Food Industry

Q: What is a life cycle assessment?
A: A method for measuring the environmental impact of a product or process across its full life cycle—from raw material production through use and disposal. In food, this covers farming, processing, transport, cooking, and waste. The methodology is governed by ISO 14040 and ISO 14044.

Q: What's the difference between LCA and a carbon footprint?
A: LCA is the broader framework, covering multiple environmental impact categories including greenhouse gas emissions, water use, land use, and more. A carbon footprint—governed by ISO 14067—focuses specifically on greenhouse gas emissions using LCA principles. Carbon footprinting is a subset of LCA.

Q: Why is LCA important for food businesses?
A: It replaces assumption-based decisions with data. LCA reveals where emissions actually occur across a supply chain, which ingredients carry the highest impact, and where reductions will make the most difference—information that's not accessible any other way.

Q: Is LCA required for Scope 3 emissions reporting?
A: LCA isn't a regulation itself, but it underpins credible Scope 3 reporting. Ingredient-level emission factors derived from LCA research are what make Scope 3 Category 1 calculations accurate enough for CSRD disclosures and procurement requirements. Spend-based alternatives are permitted under GHG Protocol but don't provide the ingredient-level resolution that reporting and reduction planning require.

Q: How does Klimato use LCA?
A: Klimato's database is built on LCA-derived emission factors aligned with ISO 14067, reviewed by IVL, and validated against the Coolfood Methodology. This gives food businesses access to ingredient-level carbon data without needing to commission their own LCA studies.