2.1.3 Level of Data Disaggregation
2.1 ISSUES TO BE RESOLVED PRIOR TO COMPILING THE INVENTORY
2.1.1 Boundaries
2.1.2 Data Sources
2.1.3 Level of Data Disaggregation
2.1.4 Future Uses of GHG Emissions Data
2.1.5 Uncertainty in GHG Emission Estimates
2.2 INVENTORY TEMPLATE
2.2.1 Six Steps to Completing the Template
GHG emissions data can be broken down according to:
• Unit process;
• Operating unit;
• Facility;
• Division;
• Business unit;
• Region; or
• Company-wide.
Each company should determine the appropriate level of data disaggregation for its operations. The level of disaggregation is often largely determined by the availability of data. For example, if natural gas or electricity is only metered where it enters the facility, you will be unable to present the data accurately at the unit process or operating unit level.
Some metal mining companies may choose to disaggregate GHG emissions data according
to emissions associated with mining, and emissions associated with metallurgical
operations.
The GHG inventory template presented in Section 2.2 has been designed so that it can be completed at any level within an organization. Once a company determines the level at which it is able to disaggregate its GHG emissions, it should assign responsibility for completing the inventory template at the appropriate level within the organization, and for amalgamating the inventories into a higher level “roll-up.”
