Should you register your installation in the CBAM Registry?

More EU buyers now ask suppliers to register their installation in the CBAM Registry. It's optional, but it can save you from sending the same file to every customer.

Reviewed by the Carbon Passport compliance team, Singapore. Updated and checked against official EU sources on 28 September 2026. Rules change often; we update this page when they do.

Quick answer

Non-EU installation operators can register in the CBAM Registry through the operators' portal to record their installations and emissions and share them with EU importers. It's optional but saves sending files to each buyer. You need company details, a registration certificate and your buyers' EORI numbers.

What the CBAM Registry is

The CBAM Registry is the European Commission's central system for the definitive regime. Importers use it for authorisation, declarations and certificates. Verifiers use it to issue verification reports. And operators of installations outside the EU can use it to register their installations and share emissions data.

Why a supplier would register

  • One source of data for all buyers. Instead of emailing templates to each customer, you can make your installation data available to the importers who buy from you.
  • Verification. From January 2027, verifiers issue verification reports in the Registry, linked to your installation. That's how your verified emissions reach your buyers' declarations.
  • Fewer errors. Buyers match your installation to their imports, rather than retyping figures from spreadsheets.

What you need

  • Your company's legal name, address and registration number, exactly as on official documents.
  • A company registration certificate that matches the registration number you enter.
  • Details of each installation producing CBAM goods.
  • At least one person to manage the account, with an administrator role.
  • The EORI numbers of the EU importers you want to share data with. Importers share these with you outside the Registry.

How to start

The Commission's CBAM Registry and reporting page links to the module for non-EU installation operators, with step-by-step e-learning videos on registration, managing installations and sharing emissions data. Follow the current instructions there, as screens and steps change between releases.

Registry or communication template?

They do different jobs and many buyers use both. The communication template is a file you send. The Registry is a shared system where your installation, emissions and verification reports live. If you supply several EU buyers, registering usually pays off quickly.

Got a request you're not sure about?

Send us what your buyer sent. We'll tell you what they need and what it will take, free, within one week.

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Frequently asked questions

Is registering in the CBAM Registry mandatory for non-EU suppliers?

No. It's the importer who has CBAM obligations. Registering is optional for installation operators, but it makes sharing data and verification reports with buyers easier.

What is an EORI number and why do I need my buyer's?

An EORI number identifies a business in EU customs. Your buyer shares theirs with you so you can make your installation data available to them.

Can I still send the communication template instead?

Yes. Many buyers accept the template. Some ask for both.

Sources

This guide explains the rules in plain language. It isn't legal advice; see our disclaimer. Always check the current official texts and your buyer's instructions.

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