PCF vs LCA: Which assessment does your business need?

It’s easy to assume that a product with a lower carbon footprint is also better for the environment. But reducing greenhouse gas emissions doesn’t always mean reducing any other environmental impacts.

That’s where choosing the right assessment becomes important. Product carbon footprints (PCFs) and life cycle assessments (LCAs) help businesses understand different aspects of a product’s environmental performance, informing decisions about sourcing, product design, and sustainability.

In this article, we compare PCFs and LCAs, explain when to use each, and explore how businesses can benefit from combining both approaches.

What is the difference between a PCF and an LCA?

Switching to a lower-carbon material might reduce a product’s greenhouse gas emissions. But what if that same change increases water consumption or puts greater pressure on natural resources?

Depending on their sustainability goals, businesses may need a product carbon footprint (PCF), a life cycle assessment (LCA), or both to understand the environmental impact of their products.

• A product carbon footprint (PCF) measures greenhouse gas (GHG) emissions across defined stages of a product’s lifecycle. Expressed in carbon dioxide equivalent (CO₂e), it helps businesses identify emissions hotspots and make targeted reductions.
• A life cycle assessment (LCA) looks at the bigger picture, examining a wider range of environmental impacts, from water use and resource depletion to pollution. It helps businesses assess the trade-offs behind product and sourcing decisions, rather than focusing on carbon emissions alone.

The nuance here is that while a PCF follows LCA principles, it focuses specifically on climate change.

The TL;DR: PCF vs LCA

When should your business choose a PCF?

A PCF is a good starting point when your business needs to understand, report, or reduce the greenhouse gas emissions associated with specific products.

For manufacturers, this calculation can help identify emissions hotspots in production and provide the product-level data customers need for procurement decisions and tenders. For retailers, supplier PCFs can inform sourcing decisions and improve visibility into the emissions associated with purchased products.

A PCF is particularly relevant when you need to:

• Respond to customer requests and tenders. Manufacturers can use PCF data to provide evidence of product emissions in procurement processes, requests for proposals (RFPs), and supplier assessments.
• Improve Scope 3 emissions reporting. Retailers and other purchasing businesses can use supplier-specific, cradle-to-gate PCFs to improve estimates of emissions from purchased goods and services.
• Identify product emissions hotspots. Understand which materials, processes, or lifecycle stages contribute most to a product’s carbon footprint to help teams prioritize reduction opportunities.
• Inform sourcing and product decisions. Use comparable PCF data to evaluate the carbon implications of different suppliers, materials, or manufacturing approaches.
• Track progress in product decarbonization. Recalculate PCFs over time to assess the impact of changes to product design, production methods, or supply chain activities.

If the primary objective is climate impact, a PCF provides the information needed to make more informed decisions.

When does your business need an LCA?

Greenhouse gas emissions only represent one aspect of a product’s environmental impact.

An LCA helps businesses evaluate environmental impacts across multiple categories, such as water consumption, resource depletion, acidification, and eutrophication (nutrient pollution in aquatic ecosystems).

It’s particularly valuable when businesses need to:

• Evaluate product design choices. Assess how changes to materials, packaging, or manufacturing processes affect multiple environmental indicators.
• Identify unintended environmental trade-offs. Understand whether improvements in one area lead to greater impacts elsewhere in a product’s lifecycle.
• Compare products more comprehensively. Evaluate alternatives using consistent assessment boundaries, functional units, and methodologies across relevant impact categories.
• Support environmental declarations. Generate the evidence required for Environmental Product Declarations (EPDs) or other product environmental assessments, following applicable standards and category rules.

For example, a business that’s redesigning its packaging can use an LCA to compare different materials, and assess the environmental impacts associated with raw material extraction, manufacturing, transportation, and disposal. The assessment will reveal how each material option performs across indicators such as water consumption, resource use, and greenhouse gas emissions.

The LCA gives the business evidence to identify potential trade-offs and make a more informed packaging decision.

How do you decide between a PCF and an LCA?

Start with the question your business needs to answer. Are you trying to measure and reduce product-level carbon emissions, or do you need to understand a range of environmental impacts?

Your reporting obligations, customer requirements, and intended use of the results will help determine which assessment is appropriate.

What if your business manages a large product portfolio?

For businesses managing hundreds or thousands of products, conducting detailed environmental assessments for every SKU is impractical, if not impossible. Prioritizing products with significant emissions or upcoming design and sourcing decisions helps businesses focus their assessment efforts where the findings can have the greatest impact.

A retailer might begin by collecting supplier-specific PCFs for its highest-emitting purchased product categories. This can help improve estimates of Scope 3 emissions and identify where supplier engagement or sourcing changes could have the greatest impact.

If the business is then considering a major packaging redesign or comparing alternative materials, an LCA can help assess environmental impacts beyond carbon before committing to a change.

Can a PCF be used as a starting point for an LCA?

Businesses that have already calculated product carbon footprints have much of the underlying data needed to conduct an LCA.

Both assessments draw on lifecycle information, including 

• Raw materials
• Energy consumption
• Manufacturing processes
• Transportation
• End-of-life activities

Where the assessment boundaries and data requirements align, businesses can reuse this information to evaluate additional environmental impacts.

However, expanding a PCF into an LCA involves more than applying different emissions factors. Businesses need to collect additional data, assess lifecycle processes, and apply impact assessment methods covering categories such as water consumption, resource depletion, and pollution.