This document discusses common reporting tables (CRTs) for greenhouse gas inventories under the Paris Agreement. It notes that CRTs are a central part of the transparency framework for standardizing how countries report inventory data. The document outlines some key considerations for developing CRTs and reporting software, including leveraging existing reporting experience, accommodating different country inventory configurations, and agreeing on CRTs in a timely manner to allow software development ahead of reporting deadlines. It emphasizes the importance of reporting detailed sectoral inventory data through CRTs to support transparency and technical expert reviews of country submissions.

1. www.oeko.de
Common Reporting Tables for the
Reporting of National GHG Inventories
Lorenz Moosmann
OECD/IEA CCXG Special Event during the Climate Dialogues
25 November 2020

2. 2
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Issues relating to Common Reporting Tables (CRT)
(1) https://unfccc.int/event/information-event-on-experiences-and-perspectives-on-the-compilation-of-greenhouse-gas-inventories
National
inventory
data
Common
reporting
tables
UNFCCC
secretariat –
database
Synthesis reports
Initial assessment report
Tools for reviewers
Public data access
Reporting
software
Cf. information event
of 20/11/2020.
Presentations
available(1).
Inventory Compilation – Inventory Reporting – Use of inventory data
• Reporting software
• Structure of tables
• Applying flexibility
Focus of this
presentation

3. 3
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Reporting software:
Requirements, challenges and opportunities
(1) https://www.ipcc-nggip.iges.or.jp/software/index.htmlCRTs for GHG Inventories │Lorenz Moosmann│CCXG│ 25 November 2020
Opportunities
Use CRF reporter
concepts, but update
technology
Take into account the
experience of CRF
reporter users
(interface, import etc.)
Arrange for direct
import from the IPCC
Inventory Software (1)
Requirements
Create tables and
forward data to the
UNFCCC secretariat
Reliable software
Sufficiently easy to
use
Available in time for
first reporting under
the transparency
framework
Challenges
More Parties
Many new users
More diverse
inventories
Higher load of data to
be processed;
possibly peak times
close to the reporting
deadline

4. 4
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Thoughts on the structure of CRTs (I)
● Hierarchy of tables
To ensure transparency, it is particularly important to report sectoral background
information, i.e. activity data and emissions per category.
Sectoral background information is generated during inventory preparation.
The availability of this information is key for the technical expert review.
CRTs for GHG Inventories │Lorenz Moosmann│CCXG│ 25 November 2020
(TJ) NCV/GCV
1.A. Fuel combustion
Liquid fuels
GREENHOUSE GAS SOURCE
AND SINK CATEGORIES
ACTIVITY DATA
Consumption
CO2 CH4
Total Energy
A. Fuel combustion activities
1. Energy industries
GREENHOUSE GAS SOURCE
AND SINK CATEGORIES (kt)
1990 1991
Total (net emissions)
1. Energy
A. Fuel combustion
(kt CO2 eq)
GREENHOUSE GAS SOURCE
AND SINK CATEGORIES
Sectoral
background
Sectoral report
Cross-cutting/summary
CO2 CH4
Total Energy
A. Fuel combustion activities
1. Energy industries
GREENHOUSE GAS SOURCE
AND SINK CATEGORIES (kt)
(TJ) NCV/GCV
1.A. Fuel combustion
Liquid fuels
GREENHOUSE GAS SOURCE
AND SINK CATEGORIES
ACTIVITY DATA
Consumption
(TJ) NCV/GCV
1.A. Fuel combustion
Liquid fuels
GREENHOUSE GAS SOURCE
AND SINK CATEGORIES
ACTIVITY DATA
Consumption

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Thoughts on the structure of CRTs (II)
● Accommodating for different configurations of national inventories
CRTs for GHG Inventories │Lorenz Moosmann│CCXG│ 25 November 2020
Common reporting tables
Provide for options to add categories
under “other”
Options to use notation keys
Parties may have additional categories in
their inventories
There are no entries for certain
categories and/or certain gases
Examples
from current
CRF tables

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Use of inventory information
CRTs for GHG Inventories │Lorenz Moosmann│CCXG│ 25 November 2020
● CRTs are one specific way of providing inventory information.
● They are a central element of the transparency framework – as
templates for electronic reporting, to be used for fulfilling part of the
reporting obligations under Article 13.7 of the Paris Agreement.
Reporting and use of inventory information
National inventory report
Biennial transparency report
National communication
Tailor-made national reports
Scientific community
NGOs
National decision makers
Global
Stocktake
National
inventory
data
Common
reporting
tables
UNFCCC
secretariat –
database
Synthesis reports
Initial assessment report
Tools for reviewers
Public data access
Reporting
software

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Conclusions
CRTs for GHG Inventories │Lorenz Moosmann│CCXG│ 25 November 2020
● Common Reporting Tables (CRTs) are one specific way of providing
inventory information. They are a central element of the transparency
framework under the Paris Agreement and promote transparency and
comparability of inventory data.
● Time available for the development of CRT reporting software is limited;
experience from current electronic reporting should feed into this
development.
● In order to have reporting software available in time for the reporting
deadline under the transparency framework, a timely agreement on the
CRTs is central.