Unit types

Most common unit types

  • Allowances used in the EU ETS...

    EUA General allowance Allowances created pursuant to Directive 2003/87/EC (with the exception of Article 3c §2). These allowances can be used by operators and aircraft operators for their compliance obligations.
    aEUA Aviation allowance Allowances created pursuant to Article 3c §2 of Directive 2003/87/EC. These allowances can be used by aircraft operators for their compliance obligations.
  • KYOTO UNITS
    • International credits used in emissions trading under the Kyoto Protocol. These units can be used in the EU ETS with certain limitations.

      CER Certified Emission Reduction Unit Via CDM emission-reduction projects in countries that do not have obligations under the Kyoto Protocol certified emission reduction (CER) units can be earned. These units can be exchanged for general allowances by operators and aircraft operators up to a certain limit.
      Based upon the project identifier you can retrieve detailed information on the origin of the CERs via the CDM website of the UNFCCC (http://cdm.unfccc.int/Projects/projsearch.html). The project identifier or project number of a CER is displayed in the registry at the account balance page.
      Important: Some CERs can no longer be used under the EU ETS! (ineligible CERs)
      ERU Emission Reduction Unit A unit converted from an AAU or RMU based on a Joint Implementation (JI) project in countries that have obligations under the Kyoto protocol. These units can be exchanged for general allowances by operators and aircraft operators up to a certain limit.
      Important: Some ERUs can no longer be used under the EU ETS! (ineligible ERUs)
    • AAU Assigned Amount Unit Units allocated to Kyoto parties (ex. Belgium) for each commitment period.
      lCER Long-term Certified Emission Reduction Unit These units are issued for an afforestation or reforestation project activity under the clean development mechanism (CDM). They expire at the end of the emission reduction crediting period of the afforestation or reforestation project activity for which they were issued.
      tCER Temporary Certified Emission Reduction Unit These units are issued for an afforestation or reforestation project activity under the clean development mechanism (CDM). They expire at the end of the Kyoto Protocol commitment period following the one during which they were issued.
      RMU Removal Unit Units allocated to Kyoto parties for LULUCF activities. LULUCF stands for Land Use, Land Use Change and Forestry.

  • Each of the units above represent the equivalent of one ton CO2.

    Since July 2013 user accounts in the EU part of the Belgian registry can only hold units that can be used within the EU ETS (EUA, aEUA, eligible CER and eligible ERU); see below.

    Eligibility of international credits (CERs and ERUs)

    Since January 1, 2013, in accordance with EU Regulation No. 550/2011 of June 7, 2011, CERs from projects to reduce HFC-23 or N2O for the production of adipic acid are no longer accepted for surrendering under the EU ETS.

    In addition, following the entry into force of EU Registry Regulation No. 389/2013 of May 4, 2013, some ERUs are no longer allowed in the EU ETS from 2014. These are mainly ERUs as specified in Article 58 (2) of the Registry Regulation, namely track 1 ERUs from projects in third countries (non EU ETS), recorded after 2012 or for which the emissions reductions took place after 2012.

    From April 1, 2015 onwards CERs and ERUs issued in respect of emission reductions in the first commitment period CP1 (2008-2012) are no longer eligible for use under the EU ETS either.

    All international credits (CERs and ERUs) that can no longer be held in the EU ETS are marked "ineligible" in the registry. These credits can no longer be received on or traded with EU accounts, but only on Kyoto accounts beginning with a country code i.s.o. EU (for example BE-121-XXX-0).

    With any purchase of international credits (CERs and ERUs) with the aim to exchange them, you should require that only credits are provided which are authorized to be used within the EU ETS and that those units are delivered to your EU account.

    More information and frequently asked questions on the eligibility of international credits can be found on the website of the European Commission, DG Clima: http://ec.europa.eu/clima/policies/ets/linking/faq_en.htm.