In recent years, the conversation around sustainability in business has shifted from whether companies should act on climate change to how effectively they are doing it. Many organizations have started to measure and report their greenhouse gas (GHG) emissions, often proudly sharing progress on reducing Scope 1 and Scope 2 emissions, those that come directly from operations and purchased energy sources (electricity). However, there is a third category of emissions that remains less visible but often far more significant: Scope 3 emissions.
Scope 3 refers to all other indirect emissions that occur across a company’s value chain, both upstream and downstream. This includes everything from the extraction of raw materials used in manufacturing, to employee commuting, to customer use and disposal of a product. In many industries, Scope 3 can account for more than 70% of a company’s total carbon footprint. Yet, because these emissions are outside a company’s direct control, they are notoriously difficult to measure and manage. Still, understanding Scope 3 is essential for any business that aims to be truly climate-responsible.
Why is Scope 3 Important?
One of the main reasons Scope 3 emissions matter is because they expose the full lifecycle impact of a business’s operations. As explained in the Handbook of Carbon Accounting by Arnaud Brohé, organizations that only focus on emissions within their walls risk underestimating their climate impact by ignoring the much larger emissions associated with their supply chains or product use. For example, a fashion retailer might have relatively low Scope 1 and 2 emissions from its offices and stores, but the carbon footprint from textile production, global shipping, and customer washing of garments may represent the bulk of its total impact.
Without accounting for Scope 3, the company’s climate report offers an incomplete picture. Another reason Scope 3 matters is because it connects companies with the broader economic system in which they operate. No business exists in isolation.
By recognizing the emissions embedded in purchased goods, outsourced services, transportation, and even customer behavior, companies are prompted to engage more deeply with suppliers, logistics providers, and end users. This kind of engagement can lead to collaborative solutions such as low-carbon procurement policies, eco-design innovations, or even changing consumer habits.
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The Challenge of Measuring Scope 3
Scope 3 accounting is undeniably complex. It involves many uncertainties, assumptions, and often a lack of direct access to accurate data, especially when dealing with suppliers or customer behavior outside a company’s direct control. These challenges can make the process feel overwhelming, but they shouldn’t stop businesses from getting started. U
sing basic estimations, such as industry averages or supplier questionnaires, can already provide valuable insights into where the biggest emissions are occurring. Over time, companies can refine these initial estimates as they build stronger data collection systems and collaborate more closely with partners across their supply chain. As data quality improves, businesses can shift from simply measuring emissions to actively managing and reducing them.
Starting small is better than delaying action, and even early-stage Scope 3 efforts can uncover significant opportunities for emissions reduction and long-term sustainability. Manage your Scope 3 emissions with the right strategy. Get professional guidance to measure, analyze, and reduce emissions across your entire business value chain. Take concrete steps towards stronger sustainability today.
Author: Ainur Subhan
Editor: Sabilla Reza
References:
Brohé, A. (2017). The Handbook of Carbon Accounting. London & New York. Routledge.
Gillenwater, M. (2023). What is Greenhouse Gas Accounting? Greenhouse Gas Management Institute.https://ghginstitute.org/2023/03/01/what-is-greenhouse-gas-accounting-furnishing-definitions/