The Hidden Carbon in Materials: Why Industrial Decarbonization Must Go Beyond Energy
When companies discuss industrial decarbonization, the first actions usually involve renewable electricity, efficient machinery and lower-carbon transport. These measures matter, but they do not reveal the full emissions picture. Long before a product reaches a factory floor, carbon has already been associated with extracting resources, processing feedstocks and producing the materials that the factory will buy.
This is the hidden carbon in materials. It is embedded in steel, cement, plastics, textiles, coatings, packaging and every component moving through an industrial supply chain. For many businesses, reducing operational energy is therefore only one part of the transition. The next competitive question is how products are designed, how much material they require, where inputs come from and what evidence suppliers can provide.
Industrial Carbon Is Also a Materials Problem
The industrial climate challenge cannot be solved only by changing the energy source used at a factory. The Intergovernmental Panel on Climate Change states that deep reductions in industrial emissions require transformational changes in energy and feedstock sourcing, material efficiency and more circular material flows. Energy efficiency remains important, but it sits inside a broader system.
Material production connects several sources of emissions. Energy is used to extract and process raw materials. Some manufacturing processes create emissions through chemical reactions. Further impacts arise from transport, scrap, short product life and the repeated production of replacement goods. A company can operate an efficient factory and still carry substantial value-chain emissions through what it purchases.
This is why material choice is increasingly becoming a business strategy rather than a back-end specification. It affects product performance, supply resilience, compliance readiness, cost exposure and the credibility of corporate climate plans.
Resource Demand Expands the Carbon Challenge
The issue is becoming more urgent as the global economy uses more physical resources. The UN Environment Programme and International Resource Panel report that extraction of natural resources tripled over the past five decades. Without major change, material extraction could rise by another 60% by 2060.
That trajectory affects more than climate. It also increases pressure on ecosystems, water, land and supply chains. For industry, this creates a double exposure: businesses may face both the environmental consequences of resource-intensive growth and the commercial risks of volatile or concentrated inputs.
Using resources more effectively can reduce both pressures. An influential International Energy Agency analysis found that material efficiency contributes around 30% of the combined CO2 emissions reduction for steel, cement and aluminium between its reference and clean-technology scenarios in 2060. The message is not that efficiency replaces clean production technology. It is that the amount, design and circulation of materials can reduce how much new production the economy needs.
Scope 3 Moves Material Decisions into the Boardroom
Corporate greenhouse-gas inventories separate emissions into three broad scopes. Scope 1 covers direct emissions from controlled sources. Scope 2 covers purchased energy. Scope 3 covers other value-chain emissions, including purchased goods and services, transport, product use and end-of-life activities.
Materials often appear upstream in Scope 3. The GHG Protocol Corporate Value Chain Standard enables companies to assess emissions across their value chains and identify where reduction activity should focus. Its calculation guidance notes that supplier-specific product-level data is the most accurate method for purchased goods and services because it relates to the actual item supplied rather than a broad spending average.
This changes the role of procurement. A purchasing team may increasingly need to compare not only price, quality and delivery, but also material composition, production route, product carbon footprint and data reliability. Suppliers that can explain their inputs and methods become easier to evaluate, while vague sustainability language becomes less useful.
The shift also connects carbon management with material traceability. If a company cannot identify the source, composition or processing history of an input, calculating and reducing its footprint becomes much harder.
What a Lower-Carbon Material Decision Really Requires
A material should not be labelled “low carbon” simply because it is recycled, renewable, natural or bio-based. Those descriptions identify characteristics, not a complete climate result. A credible comparison needs a clear function, system boundary, data period, geography and calculation method.
ISO 14067 provides principles and requirements for quantifying and reporting a product carbon footprint in a way consistent with life-cycle assessment. This matters because two materials may perform differently depending on durability, production energy, formulation, transport, waste rate and end-of-life assumptions. A lighter material could reduce transport impacts; a longer-lasting material could reduce replacement; a local feedstock could shorten one part of the supply chain but still require energy-intensive processing.
The correct question is therefore not “Which material sounds greener?” It is “Which option delivers the required function with the strongest verifiable life-cycle case for this application?”
Product-Level Carbon Data Is Becoming Industrial Infrastructure
Corporate averages can indicate where emissions may be concentrated, but they do not always help an engineer or buyer choose between two specific inputs. Product carbon footprints provide a more granular unit of information.
The Partnership for Carbon Transparency has developed a cross-industry methodology for calculating and exchanging cradle-to-gate product carbon footprints. Its framework covers material acquisition, preprocessing, production, distribution and storage, while also addressing data quality and verification. Standardised information allows carbon data to travel with a product through the value chain instead of remaining trapped in disconnected spreadsheets.
This will not make material comparisons effortless. Suppliers may use different technologies, data quality can vary and confidential information must be managed responsibly. But common methods create a foundation for better questions, more targeted supplier engagement and measurable improvement.
Five Practical Moves for Manufacturers and Product Companies
- Map material hotspots. Start with high-volume, high-spend or high-emission inputs rather than attempting to perfect every data point at once.
- Define performance before substitution. Document the mechanical, safety, appearance, durability and production requirements the material must meet. Substitution without functional clarity can create waste or product failure.
- Request supplier-specific evidence. Ask for composition, system boundaries, primary-data share, calculation method, verification status and the period represented by the data.
- Design out unnecessary material. Lightweighting, yield improvement, repairability, longer life, reuse and smarter packaging can reduce demand without relying on a single new feedstock.
- Co-develop instead of simply switching. Alternative inputs often need formulation, tooling or design adjustments. Early cooperation between supplier, engineering, design and procurement teams can produce a more workable result.
These moves build on the logic of creating more value from existing resources. They also explain why carbon reduction, circularity and product development should not be managed as separate projects.
Where Bio-Based Materials Fit—and Where Caution Is Needed
Bio-based materials can diversify feedstocks and create new uses for agricultural by-products. They may also connect rural resources with higher-value manufacturing. However, biological origin alone does not prove a lower carbon footprint. Land use, agricultural practices, allocation of impacts, processing energy, additives, durability and end-of-life all influence the result.
Companies should therefore evaluate bio-based inputs with the same discipline applied to conventional materials. Claims need suitable evidence, and different formulations should not be assumed to have identical properties or environmental profiles. The advantage of rigorous evaluation is that it helps genuine innovation stand out from marketing shorthand.
The opportunity is strongest when alternative materials are developed around a clear application, supported by testing and improved through collaboration. This is consistent with the industrial shift from treating residual resources as waste to recognising their potential value.
PiLeatha and the Material-Decarbonization Conversation
PiLeatha is a leather alternative developed in Thailand using pineapple leaf fiber and natural rubber. It illustrates how agricultural by-products and local material expertise can enter the product-development conversation.
Its presence in a decarbonization strategy should not rest on feedstock origin alone. A prospective application still needs the appropriate performance requirements, production information and environmental evidence. Different formulations and uses may lead to different results. The responsible role of PiLeatha—and of any emerging material—is to provide a technically relevant option that companies can evaluate, test and improve with their supply-chain partners.
That approach avoids a simplistic promise that one material will solve industrial emissions. Instead, it supports a more credible transition in which better material choices become part of design, procurement and measurable climate action.
Decarbonization Begins Before the Factory Switch Is Turned On
Industrial decarbonization will require cleaner energy and more efficient operations. It will also require businesses to understand the carbon already embedded in the materials entering their gates.
The companies that move first will not necessarily be those with the most sustainability claims. They will be those that can map material hotspots, ask suppliers for comparable evidence, design products with fewer resource losses and collaborate on alternatives that meet real technical needs. In that future, material data will become as important to industrial decision-making as price, quality and delivery.
Sources
- IPCC AR6 Working Group III, Chapter 11: Industry
- UNEP and International Resource Panel: Global Resources Outlook 2024
- IEA: Material Efficiency in Clean Energy Transitions
- GHG Protocol: Corporate Value Chain (Scope 3) Standard
- GHG Protocol: Technical Guidance for Calculating Scope 3 Emissions
- ISO 14067: Carbon Footprint of Products
- PACT: Methodology for Product Carbon Footprints
