The new Unit and Certificate Registry

The Unit and Certificate Registry is a modern, easy-to-use system that will allow account holders to manage and trade the units and certificates we administer. This will facilitate greater investor access and trading in carbon and environmental markets.        

The registry will make it easier for account holders to: 

• view and trade units and certificates
• meet their regulatory obligations
• engage in voluntary emissions reduction by consolidating multiple unit and certificate types in a single location. 

Transition to the new registry

We’re transitioning from the current Australian National Registry of Emissions Units (ANREU) system to the Unit and Certificate Registry. If you already have an ANREU account in the current ANREU system, your account will automatically be mirrored in the new registry. If you open an ANREU account, it will be created in the current ANREU system and the Unit and Certificate Registry.

ACCUs are moving to the registry

Australian carbon credit units (ACCUs) held in ANREU accounts will be migrated from the current ANREU system to the new registry in October 2025. The timeframe is based on successful testing and reconciliation in August and September. If adjustments are required, we will share updates by email and publish them on this webpage. 

Until the migration is complete, all ACCUs held in ANREU accounts will continue to be managed in the current ANREU system.  

ACCU functionality in the new registry

As part of the migration, we will move:

• ACCU holdings
• ACCU transaction history.

Once the migration is complete, all ACCUs held in ANREU accounts will be managed in the new registry. ACCUs will no longer be held or managed in the current ANREU system. 

The new registry will be used to:

• view ACCU holdings
• transfer ACCUs
• deliver ACCUs under contract
• surrender ACCUs to meet safeguard liability
• voluntarily cancel ACCUs.

Features remaining in the ANREU

After the migration, the current ANREU system will still be used to:

• manage any certified emissions reduction units held in ANREU accounts
• access ANREU account authorised representative history.

Onboarding other certificates to the new registry

The following new certificates will be progressively issued, held and managed in the registry:

• Renewable Energy Guarantee of Origin certificates (REGOs)
• Product Guarantee of Origin certificates (PGOs)
• biodiversity certificates under the new Nature Repair Market scheme.

Large-scale generation certificates and small-scale technology certificates will remain in the REC Registry at this stage.

Benefits

The registry will provide a modern, secure, single place to hold and transfer multiple unit and certificate types. It will improve the:

• user experience for managing and transferring holdings
• accessibility and visibility of unit and certificate attribute data
• account creation and management experience
• ability of users to download, share and manage registry data
• integration of the registry with our other online systems, giving users a more seamless experience.

The registry will also have the capability to integrate with external systems and digital trading platforms.

Unit and Certificate Registry guidance

For information on how to access and navigate the registry, read our Unit and Certificate Registry guidance.