Product Carbon Score: why and how to measure it?

Meet customer expectations, prepare for regulatory requirements, and boost your competitiveness with a product carbon score
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A product's carbon score has become a key indicator for driving corporate environmental strategy. It involves measuring the greenhouse gas (GHG) emissions associated with every stage of a product's life, from design to end-of-life. This article explains why this score is strategic, how to calculate it, and the best practices to adopt to reap tangible benefits.

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Why is the product carbon score a strategic issue?

A decisive factor for customers, tenders, and regulations

The product carbon score is increasingly being required by:

- Consumers, who want products with a low environmental impact;

- Public and private buyers, who are incorporating CSR criteria into their tenders;

- Regulators, particularly in Europe with the CSRD (Corporate Sustainability Reporting Directive), which mandates detailed non-financial reporting.

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In short: measuring and reducing your products' carbon footprint means meeting growing expectations while staying ahead of regulatory requirements.

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What are the benefits of calculating a product's carbon score?

1. Meeting customers' environmental expectations

Consumers are increasingly attentive to the origin and climate impact of products. Providing reliable carbon data enhances transparency and can tip the scales in your favor.

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2. Standing out from the competition

A product with a low carbon footprint becomes a competitive advantage: it reflects a genuine commitment, improves your image, and can justify a more ambitious pricing strategy.

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3. Identifying reduction levers

Through Life Cycle Assessment (LCA), you can:

- target the most emission-intensive stages;

- optimize choices regarding materials, energy, or transport;

- reduce your costs by improving operational efficiency.

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What method should be used to calculate the product carbon score?

Life Cycle Assessment (LCA), the gold standard method

LCA quantifies a product's environmental impact throughout its entire lifecycle, from raw material extraction to end-of-life. It complies with ISO 14040/14044 and ISO 14067 standards.

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Step 1: Define the scope

Two main approaches:

- Cradle-to-Gate: from extraction to factory gate, useful for suppliers.

- Cradle-to-Grave: from extraction to end-of-life (usage, recycling, etc.), which is more comprehensive.

Example: In the food industry, it is essential to include input usage, cooking, transport, food waste, and packaging.

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Step 2: Collect reliable data

Emission sources to consider:

- Raw materials

- Manufacturing (energy, processes)

- Transport (upstream and downstream)

- Customer usage

- End-of-life (recycling, incineration, etc.)

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The data quality is crucial: prioritize primary data obtained directly from your suppliers.

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Step 3: Analyze and convert to CO2 equivalent

Emissions are converted into CO2 equivalent (CO2e) tonnes. This allows you to:

- compare products with one another;

- identify areas for improvement;

- justify your actions to your stakeholders.

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Best practices for an actionable product carbon score

- Define a clear functional unit (e.g., "1,000 hours of LED lighting" rather than "one lightbulb").

- Justify all methodological exclusions to ensure transparency.

- Work with suppliers to obtain reliable primary data.

- Document the methodology and assumptions used.

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In short: a strategic tool for taking action and building trust

A well-calculated product carbon score helps you:

- meet customer and regulatory requirements;

- improve the environmental and economic performance of your products;

- position yourself as a credible player in the low-carbon transition.

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Altopi supports you in your carbon journey 🌿

Need to provide a carbon score for a tender or a client request?
Altopi guides you step-by-step with tailored support:
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✅ Defining the product scope
✅ Collecting and verifying data
✅ Calculating the carbon footprint (ADEME, ISO 14067, etc.)
✅ Identifying reduction levers
✅ Showcasing results for your communications or tenders

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Contact us today to build your carbon strategy.

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Key takeaways

- The product carbon score has become an essential strategic indicator.

- It is based on Life Cycle Assessment (LCA), in compliance with ISO standards.

- It helps meet customer and regulatory expectations while setting you apart from the competition.

- Reliable data, a clear scope, and effective communication are essential.

- Altopi offers comprehensive support to help you succeed in your carbon transition.

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Your company's sustainable performance