In addition, they show whether suppliers of materials and services on site are aligned with the customer's decarbonization goals. In this context, in this article you understand why Scope 3 is so relevant and how to audit suppliers in a structured way. Why Scope 3 is so important in ESG goals Carbon metrics in the construction supply chain
Organizations around the world are making progress in their ESG strategies and decarbonization commitments. As a result, the understanding is growing that reducing emissions does not depend only on its own operations. In practice, a large part of the climate impact of an enterprise comes from the supply chain. That's because This chain includes the manufacture of materials, transportation, logistics and services contracted throughout the project.
According to the GHG Protocol, Scope 3 emissions often account for the largest share of the corporate carbon footprint. Therefore, Managing them is critical to achieving climate goals. In addition, This management allows companies to have a broader view of the impacts associated with their activities.
In the civil construction sector, the relevance of this approach is even greater. Materials such as steel, concrete, aluminum, and glass are among the main responsible for the incorporated emissions of projects.
Therefore, choosing suppliers with robust carbon management policies makes a difference. The same goes for prioritizing materials with a lower environmental impact. These choices reduce project emissions without compromising performance, quality, or economic viability.
In this scenario, carbon metrics in the supply chain gain prominence. They allow the environmental performance of suppliers and partners to be evaluated in a structured and transparent way. More than a control tool, they become a strategic instrument. With them, the company guides purchases, reduces environmental risks, and drives the transition to a low-carbon economy.
How to audit suppliers and track carbon metrics
Supplier auditing plays a central role in this process. It analyzes, for example:
– Greenhouse gas inventories;
– emission reduction targets;
– environmental certifications;
– use of renewable energy;
– Environmental product declarations.
With this data, it is possible to verify the alignment of each supplier with the corporate client's sustainability objectives. In addition, monitoring increases the reliability of the reported data. It also encourages continuous improvement and strengthens the value chain's commitment to concrete environmental results.
What studies say about emissions in the supply chain
The importance of this management appears in recent research. A study by the CDP and the Boston Consulting Group (2024) brings a revealing fact. Supply chain emissions can be, on average, 26 times higher than direct operational ones.
The same study shows that companies that work in partnership with their suppliers come out ahead. They have more capacity to implement effective actions to reduce emissions. Thus, they are able to achieve climate goals in line with the best international practices to combat climate change.
Competitive benefits of Scope 3 management
In addition to environmental gains, the management of Scope 3 emissions generates relevant competitive benefits. Transparent supply chains aligned with decarbonization goals strengthen corporate reputation. They also reduce risks related to climate legislation. In addition, they increase the ability to meet the expectations of investors, customers, and other stakeholders.
As highlighted by CDP (2024), companies that integrate climate criteria into their procurement and contracting processes are better prepared. They better cope with the challenges and opportunities of an increasingly sustainability-driven economy.
Conclusion: Carbon metrics in the supply chain as a strategic advantage
More than a market requirement, auditing and monitoring suppliers' carbon metrics is a strategic opportunity. It generates value, promotes innovation, and builds resilient supply chains. By incorporating decarbonization criteria into decisions, companies expand their ability to achieve climate goals. They also strengthen competitiveness and lead the transformation towards a low-carbon future.
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