Use of Models and Facility-Level Data in Greenhouse Gas Inventories

Use of Models and Facility-Level Data in Greenhouse Gas Inventories
Source: NIR submissions to UNFCCC 2009
Figure 5-1 shows the extent of ETS use in the EU. Green indicates the NIR provides information how ETS data was
used for GHG inventory. Red indicates no information provided in NIR about whether ETS data was used. No NIR for
Luxembourg was available during the preparation of EU 2010 NIR.
Figure 5-1
Use of ETS data for inventory purposes in the EU
The following assessment provides a detailed overview of the use of ETS data in the EU-15 Member States. The
information is mainly based on the NIR, as well as on the assessment conducted for this report.
5.1.4 Use of ETS data for GHG inventories in specific countries
Three countries have been chosen to illustrate the use of ETS data in national GHG inventories: the two largest GHG
emitters in Europe (Germany and France, with well developed national inventory systems), and Greece representing a
less mature but developing GHG inventory. The authors of he EU NIR split the analysis into the use of energy, and
industrial processes and the analysis they made is reproduced below.
Germany
General
The coverage of CO 2 emissions from ETS activities in relation to individual CRF source categories is not provided in the
NIR.
In 2006 a research project compared ETS emissions and inventory emissions and developed allocation rules how the
ETS emissions should be allocated to inventory categories. Then a formalized procedure was developed for the annual
data exchange between ETS authority and the inventory system. ETS data are generally used for verification and QA
purposes but not directly in the inventory. Emission factors from ETS data are also used. Activity data from ETS data
are not used because these data are confidential and would decrease the transparency of the GHG inventory.
In the CRF table 1s1 (Energy) Germany reports an additional source category that includes the combustion emissions
from source categories covered by the ETS (glass, cement and ceramics). This additional voluntary reporting
considerably enhances the comparability of ETS emissions with inventory emissions at sectoral level.
Energy
The NIR generally indicates that ETS data are used for verification purposes. Both systems, the inventory and the ETS,
refer to a list of “basic” CO 2 emission factors in the energy sector.
Industrial processes
• 2A1 Cement Production: EFs between inventory and ETS are largely consistent, deviation of 1%.
IPCC Expert Meeting Report 91 TFI