General FAQs


What is the goal of Project Gigaton?

Project Gigaton aims to inspire suppliers to prevent upstream and downstream (beyond-the-shelf) greenhouse gas (GHG) emissions from the global value chain. Specifically, the goal of Project Gigaton is to prevent one billon metric tons, or one Gigaton, of CO2 emissions from global value chains between 2015 and 2030.

One Gigaton is equal to the emissions from 211 million average passenger vehicles in a year, according to the Environmental Protection Agency’s greenhouse gas equivalency calculator.

Project Gigaton is the Scope 3 component of Walmart’s science-based emission reduction target. As part of this science-based target, Walmart has also set a goal to reduce Scope 1 and 2 absolute emissions in our own operations by 18% by 2025 (compared to 2015 levels).

What are the science-based targets Walmart has set?

Walmart was the first retailer with an emissions-reduction goal approved by the Science Based Target Initiative. According to the Science Based Target Initiative, targets adopted by companies to reduce GHG emissions are considered “science-based” if they are in line with the level of decarbonization required to keep global temperature increase below 2 degrees Celsius compared to pre- industrial temperatures, as described in the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC AR5).

As part of its goal, Walmart is working to reduce scope 1 and 2 absolute emissions in our own operations 18% by 2025 (compared to 2015 levels). We plan to do that through various means, including adopting new energy efficiency measures, using lower carbon energy sources, and by doubling our use of renewable energy. That will mean that 50% of our operations are powered by renewable sources. Project Gigaton, which aims to prevent one billon metric tons of CO2 emissions from global value chains between 2015 and 2030, is the Scope 3 component of Walmart’s science-based emission reduction target.

How is Walmart encouraging suppliers to participate?

At Walmart, we believe that committing to emission reductions is both beneficial to the environment and good for business. We believe that the integration of sustainable practices into operations and sourcing can have the benefits of competitive advantage, technological innovation, brand loyalty, and increased employee engagement. For this reason, we encourage every Walmart supplier to join Project Gigaton, showcase the impact they are having, and take advantage of recognition opportunities.

This website offers “toolkits” of resources and information for each of the Project Gigaton pillars (Emissions, Energy, Agriculture, Waste, Packaging, Deforestation, and Product Use) to help suppliers get started or advance their existing work. For those suppliers doing good work, we’re sharing their stories and case studies within Walmart, the supplier community, and publically through various recognition opportunities.

Why did Walmart select the pillars of Energy, Agriculture, Waste, Packaging Deforestation and Product Use? How is the Emissions pillar different?

Walmart identified Energy, Agriculture, Waste, Packaging, Deforestation, and Product Use as the focus for Project Gigaton because each of these “pillars” represents meaningful opportunities to prevent upstream and downstream greenhouse gas emissions across numerous product categories. Each of these six pillars is specific enough to focus work and report results, while also being broad enough to engage the wide variety of products and suppliers that make up the Walmart assortment.
If suppliers prefer to set a goal that addresses emissions more broadly, e.g. a science-based target or absolute emissions reduction goal, they may do so by joining the Emissions pillar rather than Energy, Agriculture, Waste, Packaging, Deforestation, or Product Use.

Suppliers are invited to join one or multiple Project Gigaton pillars and report achievements annually. Please see Reporting FAQs for more information.

Is the goal of Project Gigaton to inspire reduced or avoided emissions?

Avoided and reduced emissions will be counted toward Project Gigaton and will not be differentiated when speaking about Project Gigaton publically.

Walmart recognizes the important difference between avoided and reduced emissions. We’re committed to inspiring broad action across many industries and issues, which we hope will deliver both avoided and reduced emissions.

How to Join FAQs


How do I join?

To join Project Gigaton, simply click the Join Us button found throughout this website and provide the following information: pillar(s) you’ll be joining, goal details, and contact information. Once this information is submitted, you are registered to receive Project Gigaton communications and report achievements annually. Please see Reporting FAQs for more information on how and what you’ll be asked to report.

For examples of goals being submitted for each pillar, please see the pillar “toolkits” found on this website (Emissions, Energy, Agriculture, Waste, Packaging, Deforestation, and Product Use).

Do I have to join Project Gigaton to participate and report progress?

Yes, you must join Project Gigaton to participate, report progress, and be eligible for recognition opportunities. You only need to join once to be included in all future years of the program.

To join Project Gigaton, simply click the Join Us button found throughout this website and provide the following information: pillar(s) you’ll be joining, goal details, and contact information.

Should I set a goal for my own operations, or value chain?

Suppliers can join Project Gigaton by setting a goal for their own operations and/or value chain, i.e. scope 1, 2, or 3 emissions.

What if I don’t know how to set a goal?

If you’re not sure how to get started or set a goal, please use this website as a resource or seek a sustainability professional to help guide you. This website offers “toolkits” of resources and information for each of the Project Gigaton pillars (Emissions, Energy, Agriculture, Waste, Packaging, Deforestation, and Product Use) to help suppliers get started or advance their existing work.

What happens after I sign up?

After you Join Us, you will receive an email back from the Walmart team confirming your submission.
We will reach out to you if we’d like additional information.

Each year, beginning this fall, you’ll be asked to report on your emissions reduction contribution toward Project Gigaton. Please see Reporting FAQs for more information on how and what you’ll be asked to report.

Is there a cost to participate?

There is no cost to participate. After you Join Us, Walmart will include you in the survey process to report your emissions reduction contribution toward Project Gigaton each year.

Project Gigaton reporting will be conducted by issuing surveys through the SAP Product Stewardship Network (PSN). PSN is the same platform utilized to issue the Walmart Sustainability Index survey. For suppliers completing the Walmart Sustainability Index, you’ll be able to find your Project Gigaton survey alongside your Sustainability Index survey(s). Although there is a fee associated with submitting Sustainability Index surveys on the PSN system, there is no fee to submit Project Gigaton surveys. If your company does not participate in the Walmart Sustainability Index and is not already registered on PSN, additional instructions to access PSN will be shared with you prior to the reporting period.

Can I join Project Gigaton with an existing target or goal?

Yes, absolutely! You can Join Us by submitting an existing goal, or by setting a new one.

The timeline for your goal does not need to match the Project Gigaton project timeline; however we’ll only be contributing emissions reductions achieved between 2015 and 2030 toward Project Gigaton. For example, if your company’s goal spans from 2010 to 2020, Walmart will only count emissions reductions achieved from 2015-2020 for the purposes of Project Gigaton.

Can I change my goals in the future?

Yes. You own your goals and may change or update them as your business requires it. You do not need to re-join Project Gigaton if you change or update your goals, although you may opt to notify Walmart by emailing corpsu@wal-mart.com.

Will my participation be made public?

Supplier participation and reporting to Project Gigaton will not be made public without supplier permission. However, we encourage all companies to make their goals public in order to be more transparent and drive accountability.

How big of a commitment do I need to make?

The goal you set is up to you – we welcome goals big and small, so please identify the right target for your organization. Consider selecting goals that are ambitious or “stretch” goals.

Can I participate if I’m not a direct supplier to Walmart?

To avoid double counting, only direct “tier 1” suppliers of Walmart products are eligible to join and report to Project Gigaton. Other value chain members are encouraged to work through their eligible business partners to “get credit” for their emissions reduction activities as part of Project Gigaton.

Do I need to join all the pillars, or just one?

The pillars (Emissions, Energy, Agriculture, Waste, Packaging, Deforestation, and Product Use) are a menu of options for you to choose from – suppliers are invited to join one or multiple Project Gigaton pillars.

Please see Reporting FAQs for more information on how and what you’ll be asked to report.

What if my emissions reduction activities don’t fit into the Energy, Agriculture, Waste, Packaging, Deforestation or Product Use pillars?

While we did our best to identify pillars that would that allow Project Gigaton to capture emission reduction contributions across the wide variety of products and suppliers that make up the Walmart assortment, we recognize that your company make be undertaking activities that don’t fit within the Energy, Agriculture, Waste, Packaging, Deforestation, and Product Use pillars as they’re scoped today.

If this is the case, you can still Join Us by setting a broad emissions reduction target as part of the Emissions pillar. Each year, you’ll be asked to report aggregate emissions reductions using responses from your CDP Climate Change Information Request, rather than reporting to the other six pillars. The specific CDP data points you’ll be asked to report are listed on the Emissions page.

Are there any organizations you recommend I work with for help?

There is no requirement to work with an outside organization as part of Project Gigaton, however we encourage you to find an organization or business to help you if you would like additional support. In our case, we have relied on organizations such as World Wildlife Fund, Environmental Defense Fund, The Nature Conservancy, The Sustainability Consortium, CDP, and Conservation International; additional organizations are named throughout the pillar toolkits found on this website.

Reporting FAQs


When, what, and how will I report?

Reporting will be conducted annually using calendar year data. This year’s reporting period will be open from October 2nd, 2017 through November 3rd, 2017. Suppliers may submit data from calendar year 2015 and/or 2016.

The specific data points you’ll be asked to report can be found underneath the What will you report? section of each pillar “toolkit” found on this website (Emissions, Energy, Agriculture, Waste, Packaging, Deforestation, and Product Use). For transparency, the methodology used to convert this data into greenhouse gas reductions is also listed in each “toolkit”.

Project Gigaton reporting will be conducted by issuing surveys through the SAP Product Stewardship Network (PSN). PSN is the same platform utilized to issue the Walmart Sustainability Index survey. For suppliers completing the Walmart Sustainability Index, you’ll be able to find your Project Gigaton survey alongside your Sustainability Index survey(s). Although there is a fee associated with submitting Sustainability Index surveys on the PSN system, there is no fee to submit Project Gigaton surveys. If your company does not participate in the Walmart Sustainability Index and is not already registered on PSN, additional instructions to access PSN will be shared with you prior to the reporting period.

What if I don’t want to report pillar-by-pillar?

While we did our best to identify six pillars that would that allow Project Gigaton to capture emission reduction contributions across the wide variety of products and suppliers that make up the Walmart assortment, we recognize that your company make be undertaking activities that don’t fit within the six pillars as they’re scoped today (Energy, Agriculture, Waste, Packaging, Deforestation, and Product Use).

If this is the case, you can still Join Us and report aggregate emissions reductions using responses from your CDP Climate Change Information Request, rather than reporting pillar-by-pillar. The specific data points you’ll be asked to report are listed on the Emissions page.

What is the timeline for Project Gigaton?

The goal of Project Gigaton is to prevent one billon metric tons, or one Gigaton, of CO2 emissions from global value chains between 2015 and 2030.

The timeline for your goal does not need to match the Project Gigaton project timeline; however we’ll only be contributing emissions reductions achieved between 2015 and 2030 toward Project Gigaton. For example, if your company’s goal spans from 2010 to 2020, Walmart will only count emissions reductions achieved from 2015-2020 for the purposes of Project Gigaton.

How many years of data can I report retrospectively?

Suppliers joining Project Gigaton in the future can back-report to the baseline year, 2015.

After reporting, can I change the data I’ve submitted?

Any amendments to reported data will be handled on a case-by-case basis. To start this process, please notify Walmart by emailing corpsu@wal-mart.com.

How will the data I report be converted to greenhouse gas emissions?

The specific data points you’ll be asked to report can be found underneath the What will you report? section of each pillar “toolkit” found on this website (Emissions, Energy, Agriculture, Waste, Packaging, Deforestation, and Product Use). For transparency, the methodology used to convert this data into greenhouse gas reductions is also listed in each “toolkit”.

What if I already report to CDP?

If your company already reports to the CDP Climate Investor Questionnaire, or the CDP Supply Chain program at Walmart’s request, data points collected for select questions of the 2017 CDP Climate Change Information Request can be leveraged to respond to Project Gigaton for some pillars. If applicable, the appropriate CDP question numbers are listed in the What will you report? section of each pillar “toolkit” found on this website. Suppliers will still need to complete the Project Gigaton survey on PSN (by manually copying over CDP data) to participate in Project Gigaton.

Do I need to report operations and value chain emissions reductions separately?

Suppliers can report emissions reductions achieved in their own operations and/or value chain toward Project Gigaton, i.e. scope 1, 2, and 3. Suppliers are not required to split out Scope 1, 2, and 3 reductions in reporting.

Do I report for my Walmart-only, US, or global business? Should I attribute emissions reductions to Walmart?

Project Gigaton does not require reported emissions to be attributed to Walmart in order to count towards the gigaton target. Suppliers choose what portion of their emissions reductions to report toward Project Gigaton (e.g., global business vs. US-only vs. Walmart-only vs. portfolio-level).

Supplier reductions not connected to products sold at Walmart can be counted toward Project Gigaton. Reductions achieved through Walmart-led programs or independent supplier activities can be counted toward Project Gigaton.

How is this Project Gigaton different from the Sustainability Index?

The Sustainability Index is a scorecard developed by The Sustainability Consortium (TSC) which is designed to collect information on consumer product life cycles — from raw materials, sourcing, manufacturing and transporting, to selling, customer use and end of life. The results are then anaylzed so Walmart can use them to benchmark supplier performance, identify risks, and focus suppliers on continuous improvement on sustainability “hot spots” across the entire product lifecycle.

Project Gigaton focuses only on measuring greenhouse gas emission reductions achieved by suppliers in a given year. In many cases, suppliers taking action to improve on certain Sustainability Index “hot spots” will achieve emissions reductions which can then be reported to Project Gigaton. Project Gigaton is focused on elevating supplier goals and progress specifically tied to climate and GHG emissions reductions.

Will the data I submit to Project Gigaton be audited?

Walmart will not be auditing these results, so it is up to you to ensure accuracy. We expect those submitting goals to submit accurate information, and encourage you to make your results public.