ACPs calculate how many certificates they can create from eligible activities using specific calculation methods. Next, they register the certificates in the Registry of Certificates. This is done in TESSA, our online system

Once registered, a certificate can be traded.

Man working at computer

A certificate owner is responsible for arranging the trade or sale of any certificates. This is done outside of the Registry of Certificates. 

Whenever a sale or trade occurs, the new owner must register the transfer of ownership in the Registry of Certificates. They do this within TESSA.

Document passing from one person's hands to another's for signing

A certificate holder can give the certificate back to the issuing authority, ending its validity or use. This is known as surrendering a certificate. 

Scheme participants need to surrender certificates as part of meeting their obligations. Other certificate holders can choose to surrender their certificates voluntarily. 

This is done in TESSA. IPART then decides whether to accept the surrender of a certificate. 

Surrendering certificates

Latest certificates news

Auditor
industry: ESS industry: PDRS

Offline payments for registering certificates ended 31 August 2025

2 Sep 2025
No more offline payments for certificate registrationsOffline payments (direct deposits) are no longer accepted for certificate registrations. All…
Learn more
Auditor
industry: ESS industry: PDRS

Offline payments for registering certificates end soon

12 Aug 2025
Offline payments for certificate registrations end soonACPs are reminded that offline payments (direct deposits) will be discontinued for certificate…
Learn more