The Union Registry

Access Ireland’s section on the Union Registry on

What is the Union Registry?

The revised ETS Directive, that was adopted in 2009, provides for the centralisation of the EU ETS operations into a single European Union registry, operated by the Commission. The single Union registry has replaced all EU ETS registries hosted in the Member States.
The Union registry includes accounts for aircraft operators, which have been included in the EU ETS since January 2012, as well as accounts for stationary installations and person holding accounts, which have been transferred from the Member States' national registries.

The Union Registry records:

  • the carbon dioxide allowances that installations are allocated 
  • annual verified emissions entered by operators 
  • all transactions processed in Ireland’s Registry 
  • annual reconciliation and allocation of allowances