The first table and figure you will see in the current format of the Part I S&A provides aggregate information on the contribution of subsectors to total GHG emissions in the Energy sector.

The next table (Table 1.1) focuses on a comparison between the CO2 emissions from fuel combustion using the reference approach and the sectoral approach. This is not a standard type of table because it is specific to one issue.

You will notice that Table 1.2 is repeated for different categories and sectors. This particular table contains CO2 emissions from Stationary Combustion for the base year and for the latest available year and trend information for all the other years. For some categories, it is also used to provide information on the trend of other parameters, such as fuel consumption (see, for example, Table 1.11-1.16) or implied emission factors (see, for example, Table 1.36c and 1.36d). This information is very useful as it can be used to identify significant inconsistencies in the data submitted by a Party. If either dramatic changes are exhibited in the data, or if the data are constant, then it suggests that further investigation is warranted to ensure that the Party of providing an accurate, consistent, and complete estimate.

The next two tables (Tables 1.3 and 1.4) are other typical tables that are repeated for different categories and sectors. Table 1.3 contains information on CO2 emissions from Energy Sector-Stationary Combustion-liquid fuels for the base year and Table 1.4 for the latest available year (2004 in this particular case). These tables combine many different kinds of information from Parties’ CRF submission in a compact and accessible format. This includes:

• Whether it is a Key Category and by what criteria (level or trend) according to the Secretariat’s analysis
• What percentage of the Party’s total inventory is accounted for by the source category
• A summary of the sources of the methods and emission factors used
• A detailed breakdown by sub-source category of implied emission factors, which you can compare across Parties and to IPCC default values of relevant emission factors
• In some cases, pertinent information on activity data (e.g., units of reported activity data) is also provided (e.g., Table 1.50b).

Another typical table is Table 1.17. It typically provides information on the percentage contribution of different categories and sub- categories to total emission of a gas for the base year and the most recent year. This kind of information is useful to see how the relative importance of the category or sub-category has changed over time.