About cbam.hub

cbam.hub is a platform that facilitates the streamlined and seamless communication of CBAM data from suppliers of CBAM goods to the companies importing them into the EU. The platform offers a secure, automated and structured transmission of CBAM data.

cbam.hub does not provide support to the producers of CBAM goods with the calculation of embedded emissions. Producers seeking assistance with CBAM data collection and calculation are advised to the European Commission’s CBAM webpage, specifically the Guidance document on CBAM implementation for installation operators outside the EU, or to consult a CBAM expert. If you are an intermediary supplying CBAM goods to EU companies, but not the producer, please contact the respective producers to collect the required data.

How it works

Your clients purchased goods that are subject to the CBAM regulation and imported them into the EU. They are obliged by EU law to regularly provide information on the emissions associated with the production of their imported CBAM goods in the form of CBAM reports and declarations. Within these reports, importers must communicate the embedded emissions based on actual data from producers and calculated according to CBAM rules.

Importers use cbam.hub to source CBAM data from their suppliers. They upload data on the CBAM goods they imported to the EU along with their suppliers’ contact information. cbam.hub identifies the data that needs to be obtained from suppliers to generate complete CBAM reports. cbam.hub then reaches out to producers and requests the needed data. Before the submission deadline for CBAM reports, cbam.hub collects all information provided by producers and compiles CBAM reports for the importing companies.

Step-by-step guide for filling data queries

If you have received an email invitation to submit CBAM data via cbam.hub, please follow the steps below to complete your submission.

If your email address is used by multiple importers as the contact for different CBAM goods producers, you must manage requests from various importing companies. Select the relevant supplier in the top right corner to provide CBAM data. Duplicate or differently spelled supplier names may appear due to variations in how importers maintain your details.

If your email address is associated with only one producing company, that company’s name will be displayed in the top right corner. Upon selecting a supplier, the welcome screen will appear, providing an overview of how to use cbam.hub and access technical support.

Select an active data query from the list on the left pane and review the displayed information for the respective query. This data, provided by the importing company, helps you allocate queries to your articles. The query names (e.g., 14585-4-3,5X32) are identifiers given by the importing company that you should recognise.

In the article overview, you’ll find additional details to help identify the article. Ensure you understand which articles your client is requesting data for, and contact them if you have any uncertainties.

cbam.hub allows you to aggregate multiple active data queries into one. This is recommended to reduce the time required to complete all queries. Aggregation follows CBAM rules based on production methods defined under CBAM. To use this feature, check the box ‘Add more goods with identical production methods’ and add one or more articles to your active data query. This way, you can assign CBAM data to multiple queries simultaneously. Do not use this option if you plan to submit distinct CBAM data sets (e.g., embedded emission figures) for goods sharing the same CN code.

To complete an active data query, assign a CBAM data set to the selected query or group of queries created in Step 1. A CBAM data set includes information on the producer, production facility, embedded emissions, production methods, and electricity consumption. A CBAM data set is valid for the monitoring period, typically the calendar year before the goods were imported into the EU.

To assign a CBAM data set, first create at least one CBAM data set by clicking ‘Create’ and following step 2.1. If you have already created the corresponding CBAM data set, select it from the drop-down list and click ‘Assign’ to complete the query.

If the active data query is associated with multiple CBAM data sets, activate the checkbox ‘The selected articles are assigned to multiple CBAM data sets’. Specify the weight share of the queried net mass for the selected CBAM data set. Repeat this procedure with other CBAM data sets until the total net mass of the query is assigned. Click ‘Assign’ to complete the query once the total net mass has been allocated.

To create a CBAM data set, first provide details on the producer of the selected CBAM good by completing the form. If you are an intermediary, contact the actual producer for the required information. Activate the checkbox ‘We are not the producer’ and click ‘Add Producer’ to enter the producer’s information. If you have previously added a producer via cbam.hub, select them from the drop-down menu.

Next, provide information on the production facility. Enter the name and country of the facility where the selected CBAM good was produced. Click ‘Create’ and complete the required fields. If you have previously created production facilities via cbam.hub, select the relevant installation from the drop-down menu. Note that production facilities are associated with producers, so the drop-down list will only display facilities linked to the producer selected in Step 2.1.

To add CBAM data to the CBAM data set, start by providing a name for the data set. The name should be easily recognizable and representative of the CBAM goods it encompasses. Next, enter the reporting period, which is the year during which CBAM data was monitored. The CBAM data set is valid only for this monitoring period, typically the calendar year before the goods were imported into the EU. Under Production Methods, select one or more methods that describe the production processes for the selected CBAM goods.

In the Direct Emissions section, specify the reporting methodology used for sourcing CBAM data. Please be reminded that the official CBAM calculation rules from the EU Commission are the only permissible methodology since the beginning of 2025. Select ‘Commission Rules.’ Enter the Specific Direct Embedded Emissions, ensuring to convert to tonnes of CO2-equivalent per ton of selected CBAM good if necessary.

For Indirect Emissions, provide information on the electricity source by selecting an option from the drop-down list. Specify the specific electricity consumption, converting it to Megawatt hours per ton of CBAM good if required. You will also need to provide the emissions factor for electricity used in calculating indirect emissions. Select the source of the emissions factor from the drop-down list. If you receive electricity from the grid, you must provide an emissions factor from a publicly accessible database like the International Energy Agency (IEA). If you choose IEA, provide the value below. If you select ‘Other,’ include the value, source name, and additional information (such as a source link) below.

After completing all the required fields, click ‘Create’ and return to Step 2.

After completing all active data queries, a notification will be displayed. You can view all completed data queries and assigned CBAM data sets by clicking on the ‘Completed data queries’ tab. Expand the listed articles for a detailed overview by clicking the right-facing arrow on the left side. To detach CBAM data sets from data queries, click ‘delete’. The data query will revert to active status, allowing you to create or assign a different CBAM data set.

Edit created CBAM data sets by clicking the ‘existing CBAM data sets’ tab and then ‘edit’ on the right side. Note that any changes will directly impact the completed data queries to which the data set is assigned.