At CarbonBox we firmly believe that measuring is not only an obligation, but a strategic tool for change. So far we have discussed what Life Cycle Assessment (LCA) is and why it is key for sustainable companies, and also how to communicate Scope 3 emissions across the value chain.
In this new blog post, we take a step further: connecting both concepts to show how LCA strengthens the management of Scope 3 emissions, and why for your company this means better decisions, greater transparency, and real impact.
Why link LCA and Scope 3?
The reality is clear: many companies that have calculated their Scope 1 and 2 emissions discover that most of their footprint comes from Scope 3, that is, from indirect emissions along the value chain. According to CDP / World Resources Institute, Scope 3 emissions can represent, on average, around 75% of a company’s total emissions [1].
This means that, while operating efficiently internally is important, what is truly transformative lies in looking beyond: raw materials, transport, end use of the product, disposal, etc. LCA is precisely the methodology that allows all of these stages to be mapped, analyzed, and quantified, from “cradle to grave” or “cradle to gate,” and with it, to bring to light high-impact areas, prioritize actions, and influence the value chain.
The ISO 14040/ISO 14044 standards define the framework for carrying out a rigorous LCA [2]. Therefore, LCA is the methodological tool; Scope 3 is the area of intervention and management where many companies find their greatest opportunity.
How to apply LCA to manage Scope 3 emissions?
Let’s look at some key steps for integrating LCA and Scope 3:
- Define the scope of the LCA with a Scope 3 lens.
At CarbonBox we recommend that when designing an LCA you explicitly include the analysis of those stages that will later appear in the Scope 3 inventory: procurement of inputs, product transport, product use by the customer, end of life. This ensures that the LCA is broad and covers the entire value chain.
- Quantify emissions at each stage and Scope 3 category.
Thanks to LCA, specific emission factors can be assigned to each stage of the life cycle, and you can map which Scope 3 categories (for example: purchased goods and services; transport; product use) concentrate most of the footprint. The Corporate Value Chain (Scope 3) Accounting & Reporting Standard (GHG Protocol) details 15 categories for Scope 3[3].
- Identify high-impact reduction levers.
A well-done LCA reveals where the most powerful “levers” for change are. And in the context of Scope 3 this is especially relevant, because many of those emissions are not directly controlled, but can be influenced (suppliers, product redesign, logistics changes)[4, 5].
- Integrate results into the emissions management strategy.
Once quantified and prioritized, Scope 3 emissions (and their origin through LCA) must be translated into a mitigation roadmap: selecting suppliers with lower emissions, changing product design, more efficient logistics, reuse or recycling at end of life. Studies indicate that to reach emission reduction standards, companies must cover up to 95% of their Scope 3 emissions [6].
- Communicate with transparency and rigor.
Since one of the great challenges of Scope 3 is communication, as we addressed in our previous blog post, having an LCA adds credibility, facilitates the translation of technical data, and makes it possible to open internal and external dialogue on a solid basis. In short: LCA + Scope 3 = understandable information + strategic action.
Best practices to make the integration work
At CarbonBox we believe that integrating LCA into Scope 3 management within carbon footprint estimation requires practical, concrete changes in how information is organized and how the company relates to its value chain.
First: traceable, quality data. A useful LCA is born from clear records on inputs, processes, transport, use, and end of life; without that traceability, any decision remains a hypothesis.
Second: strategic collaboration with suppliers. Many relevant reductions are achieved by working hand in hand with suppliers: sharing methodologies, harmonizing emission factors, and co-designing low-carbon alternatives.
Third: iterate and improve. You don’t need a perfect LCA to get started; the essential thing is to measure, learn, and refine the estimates in successive cycles until you raise confidence in the data.
Fourth: prioritize by impact. Focus on the Scope 3 categories that concentrate the largest footprint or that open clear reduction opportunities (for example, >10% of the total footprint).
Fifth: translate technical work into action. LCA results must be transformed into concrete decisions: design changes, supplier selection, logistics, and clear messages that mobilize teams and stakeholders.
If you apply these practices in an integrated way, Scope 3 management stops being complex and becomes a real competitive advantage! At CarbonBox we are experts in LCA, and without a doubt, we can help you manage your emissions in the best possible way with this approach. Schedule an appointment with us at the following link or at info@carbonbox.app!
References
[1] World Resources Institute, 2021. Trends Show Companies Are Ready for Scope 3 Reporting with U.S. Climate Disclosure Rule. Available at: https://www.wri.org/update/trends-show-companies-are-ready-scope-3-reporting-us-climate-disclosure-rule
[2] International Organization for Standardization (ISO), 2006. ISO 14040: Environmental Management — Life Cycle Assessment — Principles and Framework. Available at: https://www.iso.org/standard/37456.html
[3] GHG Protocol, 2011. Corporate Value Chain (Scope 3) Accounting & Reporting Standard. Available at: https://ghgprotocol.org/corporate-value-chain-scope-3-standard
[4] GHG Protocol, 2022. Scope 3 Frequently Asked Questions. Available at: https://ghgprotocol.org/sites/default/files/2022-12/Scope%203%20Detailed%20FAQ.pdf
[5] Carbon Trust, 2023. What Are Scope 3 Emissions and Why Do They Matter? Available at: https://www.carbontrust.com/our-work-and-impact/guides-reports-and-tools/what-are-scope-3-emissions-and-why-do-they-matter
[6] PwC, 2023. How to Measure and Manage Scope 3 Emissions. Available at: https://www.pwc.com/us/en/services/esg/library/measuring-scope-3-emissions.html