GGAS Registry

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In accordance with legislation, we established and have maintained the registers of ACPs and certificates since GGAS was established in 2003.  These registers are assembled in the GGAS Registry which is publicly accessible on the internet.  The GGAS Registry provides participants with the functionality to create, transfer ownership and surrender certificates.

When GGAS closed in 2012, a small number of ACPs remained accredited, see Compliance and performance monitoring of ACPs and there were around 11 million un-surrendered certificates that represent tonnes of CO2-e of abated greenhouse emissions.  The remaining certificates can be used to participate in voluntary offset schemes. 

Although GGAS has closed, we will continue to maintain the GGAS Registry in its current form (that is, allowing the transfer and surrender of NGACs) as long as it is practical and feasible to do so. 

The Registry is available at (opens in a new window)   
The Registry is publicly available and users may login as a ‘guest’ or register, either as an organisation or as an individual, to own certificates.  

Certificate ownership

Any member of the public can own certificates on the GGAS Registry. 

Certificate transfer

The Registry is not a trading platform, as trading of certificates is expected to occur outside of the Registry.  Where such a trade has occurred, whether bilaterally, through brokers or through other trading platforms, the change in ownership of those certificates is recorded on the Registry.

While there is no limit on the number of certificates that can be held in an account, self-registered users must provide identification documentation if a transfer of certificates would result in the ownership of more than 1,000 certificates.  While this limit remains in place, users are unable to transfer out or surrender more than 1,000 certificates.  Self-registered users can apply for the ownership limit to be removed, see application form.

Certificate surrender

Any member of the public can offset emissions through the surrender of certificates (known as voluntary surrender).  The surrender of one certificate is equivalent to the abatement of one tonne of carbon dioxide.  See the Voluntary Surrender Fact Sheet for further information.


Registry User Guide

Fact Sheet – What information does the Registry contain?

Fact Sheet – Voluntary Surrender

Form – Certificate Limit Removal

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