By default, your suppliers' emissions are often calculated using generic emission factors. By engaging your suppliers, you can gather supplier-specific emission factors, leading to a more accurate carbon footprint, better reporting (e.g. CSRD, SBTi), and more targeted supplier action. This is essential for collecting high-quality, granular Scope 3 data.
This guide walks you through the entire Supplier Engagement flow, from uploading your supplier list to tracking their progress.

The best time to start is at the very beginning of your data collection process. If you delay supplier engagement, you'll need to re-upload data to get emission attribution, and you may lose valuable insights on supplier-specific impacts.

Go to your progress dashboard then select the relevant task or go to the menu then select Suppliers > Manage Suppliers. You can upload your supplier data in five ways:

🔍 Tip: the more info you include (country, websites, IDs, addresses, emails), the easier it is to match and engage suppliers later.

Once your supplier list is uploaded, make sure your activity and accounting data is linked to the right suppliers. Adding supplier information to your activity and accounting data helps Greenly map emissions to the right suppliers and calculate a more accurate GHG footprint. It also helps identify your highest-impact suppliers, access supplier-specific emission factors, and track reduction efforts at supplier level.
To do so:
1/ Go to your Activity and Accounting modules.
2/ For your Activity modules, add the supplier information in the column “Supplier name” directly in your import file, before importing the data. Use the exact same supplier name as in your supplier list whenever possible.
3/ For your Accounting module, you can match expenses to suppliers directly on the platform.
As with activity modules, we recommend filling in the dedicated Supplier column in your accounting import file with the exact supplier name. This will make the matching process easier once the data is imported.
Once your accounting data has been imported, review the list of transactions and confirm the supplier associated with each expense. For each transaction, select the supplier that matches the expense. You have two options:

⚠️ Supplier linked to transactions depends on the quality of your source data. For both activity and accounting data, if the supplier column is missing, incomplete, unclear, misspelled, or different from the name used in your supplier list, supplier attribution may be incomplete and you may need to review or match some transactions manually.

After uploading your supplier list and linking your activity and accounting data, go to the Manage my suppliers tab.
From there, you can:
1/ Review the % of Scope 3 emissions per supplier to identify the suppliers that contribute the most to your footprint and prioritize who to engage first.
2/ Match each supplier with Greenly’s supplier database. For each supplier, you can either:

What to do when a supplier is unmatched If a supplier is marked as Unmatched, it means it has not yet been linked to a company in Greenly’s supplier database. To complete the matching process:

1/ Check the suggested supplier match in the matching column.
If the suggested company is correct, validate the match.
2/ If no relevant match is available, create a new supplier from the matching flow. The Create option appears at the end of the suggested list.
To improve the quality of the match and supplier creation, add as much information as possible. In priority the supplier’s website, then the address, ID and contact details for the supplier engagement part. This information helps Ecopilot find the most accurate match.
If you still cannot find the correct supplier match, you can report it directly in the platform so the Greenly team can review it.
🔍 Tip: if the search does not return the expected result, try editing the search input — for example by using the supplier’s legal name, website, country, or removing extra words — then run a new search.
3/ Once the supplier has been created, review the available information and add any missing details if needed.
4/ Continue managing the supplier from Manage my suppliers tab.
Once your suppliers are created or matched, go to Engage my suppliers tab to prioritize the suppliers that contribute the most to your emissions. This will help you focus your engagement efforts where they can have the greatest impact.

💡Before sending the survey, we recommend that your procurement team or a senior leader shares a short and personalized introductory message with your suppliers to improve response rates. This helps explain why you are requesting their data, how their contribution supports your sustainability goals, and why their response is important.
You can use the email template available in this guide and check the questions included in the survey here.
To send the survey:
1/ Go to the Engage my suppliers module then the tab 2. Request data
2/ Select which way you would like to send the survey. There are 2 ways:
a. Send surveys in bulk
Choose how you want to send the survey:

In the Engage my suppliers module, the tab 3. Track results gives you an overview of your suppliers’ responses, emissions data, climate commitments, and engagement progress. You'll find the following tabs:

Answer 1

Answer 2