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A guide to addressing your Scope 3 value chain emissions

Sponsored: 3Degrees' Katherine Canoy details how organizations can address their value chain emissions through measurement, materiality, and engagement.


Industrial landscape with heavy pollution produced by a large factory. Image courtesy of Shutterstock.

This article is sponsored by 3Degrees.

As organizations around the world take action to address climate change, many are committing to ambitious climate goals, including net zero carbon emissions, carbon neutrality and science-based targets. However, knowing the proper steps to take to achieve climate goals can sometimes be a challenge, particularly as it relates to Scope 3 value chain emissions. Value chain emissions lie outside an organization’s direct operations, and can therefore be more difficult to address — but they often represent the majority of a company’s greenhouse gas (GHG) emissions. There are three key steps to addressing value chain emissions — measurement, materiality and engagement — that will help demystify the process of reducing Scope 3 emissions. 


Though one of the hardest things to do, measurement is a necessary first step for a company to take in the early stages of crafting a value chain emissions reduction plan. There are a few different approaches to consider:

Economic input-output model

An economic input-output model uses readily available data (company purchases) and multiplies it by industry standard emission factors. This is a simple, quick method to determine the order of magnitude for your value chain emissions. However, using a methodology based on a GHG/$ metric can limit your ability to quantify your company’s supply chain emission reductions. The only way to show a reduction with this methodology is through buying less of the product, by using a different input with a lower GHG/$ or if the industry emission factor for that input is lowered. Therefore, individual reduction efforts with specific suppliers would not be captured through this methodology.

Life cycle assessments

Industry life cycle assessments (LCAs) can help alleviate the $/GHG limitation by providing industry sector GHG emission factors that can be applied to the weight or unit (as opposed to the dollar spend) of your company’s products. While the data may not be an exact match for your company’s specific operations, an LCA can be an effective mechanism for layering in more granular data to a Scope 3 inventory. 

Supplier-specific (primary) data

In order to fully capture your company’s successful value chain emission reductions, it's important to eventually integrate more primary supplier-specific information into your measurement process. To do this successfully, you’ll need suppliers who are willing and able to gather the data necessary to make specific calculations for your Scope 3 emissions, which requires an effective supplier engagement strategy (more on that in a minute). 


Methods for measuring Scope 3 emissions. Image courtesy of 3Degrees.


Once you’ve measured your Scope 3 emissions footprint, you will need to make some decisions about where and how you want to begin reducing that footprint. Materiality is the idea of focusing your reduction efforts on the largest source of emissions in your footprint. For example, a consumer packaged goods company might discover that a significant amount of its emissions are generated by fertilizer used during the manufacturing of its food products, because the fertilizer emits the powerful warming gas nitrous oxide. The company can then take action to encourage a shift to a less emission-intensive fertilizer.

In addition to the relative size of an emissions source, it’s also important to consider your company’s sphere of influence over those emissions. A company that sells tea may find that the act of consumers boiling water to make the tea is the largest source of its value chain emissions, but converting consumer households to renewable electricity (or convincing them to drink cold tea) just isn’t an efficient use of the company’s time. In this case, addressing the second (or even third) largest source of emissions where it holds more influence is more practical. 


As mentioned above, a key ingredient to a successful value chain emissions reduction plan is supplier engagement. Engagement is where you turn your analysis into action by communicating with suppliers, vendors and even customers about measuring and lowering their Scope 1 and 2 emissions (which fall into your Scope 3 emissions). There are a variety of paths for engaging partners, both upstream and downstream, to implement emissions reduction programs. 

Product innovation/design: Companies can talk to their suppliers about improving their core product in both innovation and design. This could include reducing the number or quantity of inputs, changing to a lower carbon input, or switching to a lower carbon supplier that uses an improved manufacturing process. You could also coordinate with suppliers within your value chain to help improve the way they operate. 

Policy advocacy: Organizations can also advocate for policies that support emissions reduction initiatives in their supply chain, such as expanding economically feasible renewable energy options in certain markets. 

Incentives: Another effective tool is the use of incentives. This can be achieved through either a "carrot" or a "stick" approach, although it’s always recommended to start with a "carrot," which results in a mutual win-win. Examples of carrots include: providing public recognition for climate leaders in the value chain; offering expertise and support to suppliers who are behind the curve; or offering longer contract terms to incentivize investments in climate initiatives. Should these fall flat, a punitive "stick" approach could be effective, such as canceling contracts with non-compliant suppliers that choose to not integrate GHG reduction initiatives into their operations.


Four actions that organizations can take to spur change across their value chain. Image courtesy of 3Degrees.

Whatever your approach, communication is key. By collaborating closely with suppliers to understand their goals and motivations, you will be in a stronger position to implement successful value chain interventions. During this collaboration, you'll likely find that cost is a major factor in your supplier's decision-making process, so it will be critical to make a business case that spurs buy-in at the executive level. You should also be mindful that your suppliers have varying levels of resources available for climate action. Offering them assistance where tactical support is most needed is a great way to get things moving. Overall, it's important to ask the right questions early on and determine where suppliers are on their path toward implementation. Some might even surprise you with their readiness.


Considerations when engaging members of your value chain. Image courtesy of 3Degrees.

While it can be daunting to determine how to best address your value chain emissions, it’s a critical element to any comprehensive climate action plan. Now, more than ever before, a wealth of thought leadership, resources and support is focused on the issue. And an accurate measurement process and an effective supplier engagement strategy will go a long way towards helping organizations achieve their value chain emissions reduction goals. The most important factor is to get started today.

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