1. Air Quality Governance in the ENPI East Countries Training on emission inventories Systems for calculating emissions 11-12 December, 2013, Tbilisi, Georgia

2. Outline Internationally available tools – CollectER III – IPCC Inventory Software Simple vs. complex systems – Spreadsheet models – Database models Where and how to start…

3. Internationally available tools There are currently two main applications available: IPCC inventory software and CollectER The IPCC software is designed for greenhouse gas emissions and incorporate emission factors (EFs) from the 2006 IPCC Guidelines The CollectER software is designed for air pollution emission inventories but does not incorporate EFs The CollectER tool is designed to help national experts on air emissions to collect the relevant air emission data for delivery to the European Commission and to international conventions The tool has been developed over the last 20 years, originally as a dBase oriented system CORINAIR94, and later as an integrated set of MS Windows tools. All tools are available free of charge from the ETC-ACC web site at: http://etcacc.eionet.eu.int/tools

4. CollectER III The CollectER / ReportER emission inventory software tools are developed by European Environment Agency (EEA) and its European Topic Centre on Air and Climate Change (ETC-ACC) since the year 1998 The reporting requirements for two conventions NFR of UNECE/CLRTAP and UNFCCC CRF are supported by the reporting part of the software tools Software and instructions are available through the Eionet website: http://acm.eionet.europa.eu/country_tools/ae/Colle ctER_III.html

5. IPCC Inventory Software The purpose of the software is to implement Tier 1 and Tier 2 methodologies in the 2006 IPCC Guidelines for the preparation of national GHG inventories either for complete inventories or for separate categories or groups of categories The primary target groups of users include inventory compilers who wish to apply default 2006 IPCC Guideline methods and Parties not included in Annex I of the Convention having limited resources without their own inventory systems The software and the user manual is available at the IPCC website: http://www.ipcc- nggip.iges.or.jp/software/

6. Simple vs. complex systems There are a number of things to take into account – The amount of data – Number of users/experts involved – Complexity of the inventory Point source data Models for calculating emissions – Easy conversion to the reporting formats Starting point depends on available resources and level of ambition It is wise to start simple and the system can then grow in complexity as experience is gathered and the need grows for a more comprehensive inventory

7. Spreadsheet models Advantages – Simple structure allows for quick building of models – Easy to use – Easy to share between experts Disadvantages – Difficult for modelling large datasets – Error prone if complex – Difficult to handle multi-dimension datasets

8. Database models Advantages – The defined structure and calculation queries limits the possibility for errors – Easy to handle large amounts of data – Possible for easy transfer to reporting formats – Possible for multiple experts to work at the same time Disadvantages – Requires competences in database design for developers – Requires enhanced skills from the users

9. Where and how to start… Consider using submodels for different sectors/source categories For less complex sources use a spreadsheet model For complex sources a database could be advantageous For compiling a central emission system consider the available international tools Involve an IT/database expert – it saves a lot of time and money in the end!

10. Questions How many are familiar with the CollectER system? How many are familiar with the IPCC software? Who currently uses spreadsheet model(s)? Who currently uses database model(s)? What are the challenges in terms of the data tools for estimating and reporting emissions?

11. Thank you for your attention