Completing Worksheet

This section is from the Workbook of the 1996 IPCC Guidelines and provides step-by-step instructions for calculating emissions by fuels for each of the main source categories using the IPCC Tier 1 Sectoral Approach. A sample sheet of Worksheet 2 can be consulted at the end of this chapter.

The amount of each fuel consumed by sector is entered in Column A.

Energy and transformation sector

Special care needs to be taken when considering the fuel use of the energy and transformation sector so that double counting is avoided.

Fuel use in the energy and transformation sector can be divided into three groups:

Transformation sector

1 Fuels transformed into secondary fuels by physical or chemical processes not involving combustion (e.g. crude oil to petroleum products in refineries, coal to coke and coke oven gas in coke ovens);

2 Fuels combusted to generate electricity and/or heat (excluding fuels used for autoproduction of electricity and heat, which are reported in the sector where they are used);

Energy sector

3 Fuels combusted by the energy (energy extraction and transformation) industries for heating, pumping, traction and lighting purposes (e.g. refinery gas for heating distillation columns, use of colliery methane at mines for heating purposes).

In this worksheet, only fuel use by Groups 2 and 3 (fuels that are combusted) is included. However, see Step 4 for the reporting of lubricants used by the energy industries. For emissions resulting from fuel use by Group 1, no worksheets are available. They should be reported under the IPCC Source/Sink Category 1B: Fugitive emissions from fuels. It is most important that this distinction be appreciated. The quantities of primary fuels reported in Column A will understate the quantities used for Group 1 activities. The reported quantities cover only the combustion needs of these industries.

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