When we think about greenhouse gas (GHG) emissions in the value chain, the focus is often manufacturing and how we can manufacture products in a more sustainable way. But what about once a product leaves the shelf and goes home with our customer?

Consumer use is an important part of a product’s lifecycle. Designers, manufacturers and brands have a unique opportunity to help customers be more sustainable by delivering more efficient and innovative products to shelf – specifically, products that help the customer lower the greenhouse gas emissions associated with their enjoyment of a product.

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How to Join


To join the Product Use pillar of Project Gigaton, your company should commit to improve the in-use energy efficiency of your product(s). Companies that sell products like refrigerators and air conditioners can also join the Product Use pillar by committing to use low global warming potential (GWP) refrigerants. By transitioning to low-GWP refrigerants and/or by making the products our customers know and love more energy efficient, we can help our customers lower greenhouse gas emissions. For example, you could submit a goal to:

  • Increase your product(s) energy efficiency by 20 percent by the year 2021.
  • Help customers avoid 1 billion kWh of energy use between now and 2025.
  • Decrease GHGs emitted through product use by 25 percent by 2030.
  • Increase the energy efficiency of half products sold by 2020.
  • Reduce refrigerant-related emissions from products by 50 percent by 2025.
  • Eliminate use of high-GWP refrigerants in our products by 2030.

The above goals are illustrative examples only and by no means the only goal style that could be submitted as part of Project Gigaton – you’ll need to determine the scope, timeline and type of goal that makes sense for your company and products. Formal, specific goals lead to substantially better returns and are an important part of being eligible to be recognized by Walmart; so, when setting a new goal, make sure it’s SMART. SMART goals are:

  • Specific – what’s your impact area?
  • Measurable – can you measure progress?
  • Achievable – is this a reasonable goal?
  • Relevant – does this fit into your strategy?
  • Time limited – by when?

After joining Project Gigaton, you’ll be asked to report on your progress annually so the impact can be recognized and attributed toward the Project Gigaton target.

Practical guidance on setting an energy efficient product goal

When developing a commitment to improve the in-use energy efficiency of your product, consider reviewing guidance from voluntary certification and endorsement label programs like ENERGY STAR in the United States or the China Quality Certification Center in China; which identify energy efficiency performance thresholds/specifications for top-performing consumer products in categories like lighting, appliances, electronics, office equipment and more.

Practical guidance on setting a low-GWP refrigerant product goal

When developing a commitment to use or transition to low-GWP refrigerants in your products, it would be helpful to review national or local regulatory guidelines on acceptable refrigerant alternatives, such as the Significant New Alternatives Program (SNAP) in the United States, Climate-Friendly Alternatives to HFCs and HCFCs in the European Union, and First Catalogue of Recommended Substitutes for HCFCs in China.

What will you report each year and how will it be converted to GHGs?

Each year, you’ll be asked to submit data points to Walmart based on the Project Gigaton pillars you’ve joined (Energy, Waste, Agriculture, etc.). For every pillar you report to, you’ll be asked to submit the impact of improvements you’ve achieved in the reporting year. There are three options for submitting Product Use data to Project Gigaton reporting:

Option 1: If your company already reports to the CDP Climate Change Questionnaire each year, your disclosure can be leveraged to report emissions reductions to Project Gigaton. To report to Project Gigaton using your CDP disclosure, you must grant permission through your company’s Project Gigaton account for Walmart to use your CDP data and the following CC4.3b fields must be completed in your CDP disclosure:

  • Activity type and description
  • Estimated annual metric tons CO2e savings
  • Scope
  • Estimated lifetime of the initiative
  • Percent of CO2e savings dedicated toward Project Gigaton (assumed to be 100% unless otherwise noted)

Please use the CDP Climate Change Reporting Guidance to properly respond to question CC4.3b. If you haven’t received a request to disclose from CDP but would like to volunteer to do so, please contact walmart@cdp-sc.com and CDP will help you get started.

Option 2: For companies that do not report their emissions reductions to the CDP Climate Change Questionnaire each year you can still report your already calculated aggregate greenhouse gas emissions reductions to Project Gigaton by providing the following:

  • Estimated annual metric tons CO2e savings
  • Activity type and description
  • Scope
  • Estimated lifetime of the initiative

Option 3: For companies that need help calculating the greenhouse gas impacts of their initiatives, you can still report to Project Gigaton by submitting the following data points and allowing Walmart to calculate your greenhouse gas emissions reductions according to the approach described in the 2018 Project Gigaton Accounting Methodology.

To calculate the impact of more energy efficient products, report the following:

  • Product category (electricity-consuming products only)
  • For the baseline product*: energy per hour of use and lifetime hours of use
  • For the more efficient product: number of units sold, energy per hour of use, and lifetime hours of use

To calculate the impact of transitioning a product to low global warming potential (low-GWP) refrigerants, report the following:

  • Product type (residential refrigerator or air conditioner)
  • For the low-GWP product: number of units sold, refrigerant type, total charge capacity, initial charge
  • For the baseline product*: average lifetime, % of year utilized, refrigerant type, total charge capacity, initial charge

* The supplier chooses the baseline product, which must be the supplier’s own product that represents the generation immediately preceding the more efficient product; if no such baseline exists, a baseline will be provided based on Energy Star qualification thresholds. Impact for transition to low-GWP refrigerants cannot currently be calculated if suppliers do not have a baseline product.

For additional information about Project Gigaton, refer to the Frequently Asked Questions or Project Gigaton Accounting Methodology.

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