What Are the 15 Scope 3 Categories and Why Do They Matter?
- infoclimatequest
- Mar 27
- 2 min read
When companies begin measuring their carbon footprint, Scope 1 and Scope 2 are usually easier to understand. Scope 3 is often where things become more complex. This is because Scope 3 covers indirect emissions across the value chain, both upstream and downstream and under the GHG Protocol, these emissions are divided into 15 categories.
Defining Scope 3 Emissions
Scope 3 emissions are the indirect emissions linked to a company’s activities, but not directly owned or controlled by the company itself. These can include emissions from purchased goods, transport, waste, business travel, employee commuting, the use of sold products and more.
This means a company may have relatively low direct emissions, but still have a significant carbon footprint because of its suppliers, service providers, logistics chain or customers. That is why Scope 3 is often one of the most important parts of a company’s emissions inventory.
Why the 15 Categories Matter?
The 15 Scope 3 categories provide a structured way for companies to identify where their emissions are coming from. Without this framework, it would be easy to overlook major parts of the value chain.
For example, a manufacturing company may find that purchased goods and services, capital goods and transport are major hotspots. A service-based company may find business travel, employee commuting and leased assets more relevant. The categories help businesses assess emissions more clearly and prioritize action more effectively.
What Companies Should Do First?
The first step is not to calculate every category in full detail. A more practical starting point is to review all 15 categories, check which ones apply to the business and identify which ones are likely to be material.
This helps companies focus their effort on the areas that matter most, instead of trying to do everything at once. Once the material categories are identified, the company can then improve data collection and build a more useful carbon management plan.
Need Help Getting Started?
Climate Quest supports organizations in measuring greenhouse gas emissions and developing practical carbon management strategies.
👉 Visit https://www.climate-quest.com/contact-us to get in touch with our team.
