{"id":9807,"date":"2026-10-15T11:32:01","date_gmt":"2026-10-15T11:32:01","guid":{"rendered":"https:\/\/climease.com\/?p=9807"},"modified":"2026-10-15T11:43:46","modified_gmt":"2026-10-15T11:43:46","slug":"cbam-registry-and-o3ci-guide-for-non-eu-operators-and-verifiers","status":"publish","type":"post","link":"https:\/\/climease.com\/it\/cbam-registry-and-o3ci-guide-for-non-eu-operators-and-verifiers\/","title":{"rendered":"CBAM Registry and O3CI Guide for Non-EU Operators and Verifiers"},"content":{"rendered":"
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Non-EU steel, aluminium, cement and fertiliser producers keep getting the same message from their EU customers: \u201cplease register in the CBAM Registry\u201d. Many start the process, hit an error message, and stop. Verifiers with a fresh CBAM accreditation run into a different surprise: being accredited does not yet mean they can submit a single report.<\/p>

Both groups work in the same place: O3CI, the CBAM Registry module for operators of installations outside the EU. This guide explains who uses it, what to prepare, and the steps for operators and verifiers, based on the Commission\u2019s manuals published in August 2026 and the verifier access procedure that applies from 1 September 2026.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Answer capsule<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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O3CI is the CBAM Registry module for non-EU installation operators and accredited verifiers. Operators register installations and emissions data; verifiers review evidence and issue reports; declarants retrieve shared data. Access requires EU Login, 2FA and role-specific documents.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Who uses which module<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The CBAM Registry has three entry points. Using the wrong one is the first common mistake.<\/p>
Module<\/th>Who uses it<\/th>What it is for<\/th><\/tr><\/thead>
Authorisation Management Module (AMM)<\/td>EU importers and indirect customs representatives<\/td>Applying for and managing authorised CBAM declarant status<\/td><\/tr>
DRMC<\/td>Authorised CBAM declarants<\/td>Overview of imports, emissions, certificates and obligations; the annual declaration<\/td><\/tr>
O3CI<\/td>Non-EU installation operators and accredited verifiers<\/td>Registering installations, recording emissions data, verification and sharing data with declarants<\/td><\/tr><\/tbody><\/table>

O3CI is intended only for installations outside the EU. EU-based operators do not use it.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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How the CBAM Registry modules connect operators, verifiers and declarants<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The benefit for operators is simple: you upload installation and emissions data once and share it with every EU customer, instead of filling in a different template for each importer. The Commission also designed the portal to keep business-sensitive data confidential.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Before you start: EU Login, 2FA and documents<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Every person who will use O3CI needs their own EU Login account. Use a company email address, and set up two-factor authentication before you try to access the Registry. For operators and verifiers, three 2FA methods are available: the EU Login mobile app, a QR code or a FIDO2 security key.<\/p>

Then prepare one PDF with the supporting documents, ideally in English, with a courtesy translation next to any original in another language. The file must not exceed 5 MB.<\/p>
Operator documents<\/th>Verifier documents<\/th><\/tr><\/thead>
Company registration certificate, with a registration number that matches the form<\/td>CBAM accreditation certificate<\/td><\/tr>
Proof of authority to represent the company, such as a power of attorney<\/td>Company registration documentation<\/td><\/tr>
ID of the authorised representative<\/td>Proof of authority to represent the company<\/td><\/tr>
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The operator path<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Operator path in O3CI, from EU Login to shared emissions data<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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  1. Create your EU Login account<\/strong> and set up 2FA.<\/li>
  2. Request access in the O3CI portal<\/strong> at cbam.ec.europa.eu\/o3cinstallation. Choose \u201cRequest an EU Access profile\u201d and complete the onboarding form: legal name, legal person, third-country operator, company address, corporate email, company identifier and country code.<\/li>
  3. Choose your role.<\/strong> An Admin Operator can submit requests to the Commission. A Simple Operator can only save draft requests. Make sure at least one person in the company is an administrator.<\/li>
  4. Attach your single PDF and submit.<\/strong> A Commission administrator reviews the request. Approval can take several days; check your spam folder if you hear nothing.<\/li>
  5. Register as an operator and add your installations.<\/strong> Approval gives you access to the portal; it does not register your company yet. Submit the registration request in O3CI, including the location of each installation with full address and geographical coordinates.<\/li>
  6. Record installation and emissions data<\/strong> for each installation: production routes, goods, direct and indirect emissions and any carbon price paid in the country of production. The Registry checks format and plausibility, but a saved record is not a verified record.<\/li>
  7. Connect with your verifier<\/strong> by sending or accepting a collaboration request, so the verifier can review your data and evidence.<\/li>
  8. Delegate access to employees<\/strong> if needed, following the Commission\u2019s delegation guide of June 2026.<\/li><\/ol>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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    The verifier path<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    Verifier path in O3CI, from accreditation to report<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    1. Obtain CBAM accreditation<\/strong> from an EU or EEA national accreditation body. Nothing in O3CI replaces this step.<\/li>
    2. Create EU Login accounts<\/strong> for the people who will use the portal, with 2FA.<\/li>
    3. Request technical access in O3CI.<\/strong> The form asks for your accreditation country and number, company details and the user role: Accredited Entity Admin User and\/or Accredited Entity Simple User.<\/li>
    4. Attach your single PDF<\/strong> with the accreditation certificate and company documents, and submit.<\/li>
    5. Apply to become a registered accredited verifier.<\/strong> This is a separate request inside O3CI, assessed by the national competent authority of the country where you are accredited. Technical access alone does not make you a registered verifier.<\/li>
    6. Accept collaboration requests<\/strong> from the installations you will verify. Only administrators can submit registration and collaboration requests.<\/li>
    7. Review data and evidence, and issue the verification report<\/strong> in the portal, so declarants can use the verified emissions.<\/li><\/ol>

      The Commission published dedicated guidance for verifiers on 28 August 2026, together with a quick guide on requesting technical user access.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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      How emissions reach the declarant<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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      Verified data only helps if the right EU customer can find it.<\/p>