Once a corporation has entered all facilities, the calculations can be manually aggregated to corporation level using the following equation (from section 8.13 of the NGER Measurement Determination): where: is the percentage uncertainty for the total emissions for the registered corporation. are the percentage uncertainties associated with each emission estimate () for each facility. are the estimated emissions from each facility the operational control of the corporation measured in tonnes CO2-e. Alternatively, corporations may then enter the aggregated uncertainty for each facility into a new version of the Uncertainty Calculator. This is a three-step process, as follows: Step 1 (figure 8) - Corporations 1” in the facility name field, select any “Facility Source (e.g. Adipic acid production), Activity (e.g. Adipic acid production), “Method 4” in the Methods drop down, and enter the total emissions (in t CO2-e) in the CO2 field for each facility. This step is repeated for each facility (i.e. each facility has a name of 1”, the same source, activity and methods as above, and the “Facility appropriate emissions for that facility). Any Source and Activity can be chosen, as the use of method 4 will cause the choice to be irrelevant. Adipic acid production is one option, but as good as any other. Figure 8. Example of entering multiple facility-level uncertainties where data exceeds the limits of the calculator: Step 1. Step 2 (figure 9) Corporations enter the facility-level uncertainty in the Aggregated – Uncertainty field for each Emissions Source field for each facility. Figure 9. Example of entering multiple facility-level uncertainties where data exceeds the limits of the calculator: Step 2. Step 3 (figure 10) The resulting of Uncertainty (%)” from the – “Assessment Corporation Output worksheet is the final corporate group level uncertainty, which then needs to be entered into EERS. Figure 10.Example of entering multiple facility-level uncertainties where data exceeds the limits of the calculator: Step 3.
Once a corporation has entered all facilities, the calculations can be manually aggregated to corporation level using the following equation (from section 8.13 of the NGER Measurement Determination): where: is the percentage uncertainty for the total emissions for the registered corporation. are the percentage uncertainties associated with each emission estimate () for each facility. are the estimated emissions from each facility the operational control of the corporation measured in tonnes CO2-e. Alternatively, corporations may then enter the aggregated uncertainty for each facility into a new version of the Uncertainty Calculator. This is a three-step process, as follows: Step 1 (figure 8) - Corporations “Facility 1” in the facility name field, select any Source (e.g. Adipic acid production), Activity (e.g. Adipic acid production), “Method 4” in the Methods drop down, and enter the total emissions (in t CO2-e) in the CO2 field for each facility. This step is repeated for each facility (i.e. each facility has a name of “Facility 1”, the same source, activity and methods as above, and the appropriate emissions for that facility). Any Source and Activity can be chosen, as the use of method 4 will cause the choice to be irrelevant. Adipic acid production is one option, but as good as any other. Figure 8. Example of entering multiple facility-level uncertainties where data exceeds the limits of the calculator: Step 1. Step 2 (figure 9) – Corporations enter the facility-level uncertainty in the Aggregated Uncertainty field for each Emissions Source field for each facility. Figure 9. Example of entering multiple facility-level uncertainties where data exceeds the limits of the calculator: Step 2. Step 3 (figure 10) – The resulting “Assessment of Uncertainty (%)” from the Corporation Output worksheet is the final corporate group level uncertainty, which then needs to be entered into EERS. Figure 10.Example of entering multiple facility-level uncertainties where data exceeds the limits of the calculator: Step 3.
NGER%20Uncertainty%20Calculator%20User%20Guide%202012%e2%80%9313%20Reporting%20Year.docx