In this lesson, you will focus on the last three steps of the overall process flow.
Calculate Scope 1,2 Emissions using Energy Flow Model Correlated to Resource: Deep Dive Continued
- Step 7: Start Periodic Inventory Calculation
After importing the transactional data, the periodic inventory calculation is initiated for the defined scope, and the energy flow for the plants within the selected scope. The appropriate calculation variant is chosen at this stage.
- Step 8: Check Data Readiness
Before executing the calculation, the data readiness is checked to ensure that all the required input data is available.
- Step 9: Review Calculation Results
Finally, perform the periodic inventory calculations, and review and analyze the results of the calculation in CO2 equivalents.
Let us look at the results of chocolate assembly.
The resource, chocolate assembly, used a cooling system, which is a process infrastructure and a meter which was connecting the energy source using the energy carrier to the resource. From both inputs some carbon emission goes to the resource. You can see that 0.44674 tons of carbon emissions come from the cooling system, and 0.15154 tons of carbon emissions come from the electricity meter assembly. Now, the same chocolate assembly is used across different production documents, and it creates a total carbon emission of 0.598 tons for the month of January.
In the Input tab, you can deep dive into the details of the inputs used in the chocolate assembly such as cooling system and electricity meter in this example. You can see that from the cooling system 141.66 liters of water was used and from the electricity meter, you can observe that 85-kilowatt hour of electricity was consumed.
From the Input tab, you know that both cooling system and electricity meter are connected to an energy source with some kind of emission factor and thus you know the carbon equivalent.
The electricity meter is connected to the waterfall energy source.
The cooling system is connected to a gas meter cooling and electricity meter cooling sources.
The gas meter cooling is further connected to the energy source natural gas.
The electricity meter cooling is further connected to the energy source waterfall.
Therefore, there are two energy sources, waterfall and natural gas, either directly or indirectly connected to the resource.
The emission factor for gas is 0.08 kilogram per cubic meter.
The emission factor for waterfall electricity is 0.1 kilogram per kilowatt hour
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The emission factor, 0.08 kilogram per cubic meter, of the natural gas is then actively transferred to the cooling system, and subsequently, from the cooling system, it is passed on to the chocolate assembly. Similarly, the chocolate assembly also has an electricity input node, which connects to a waterfall energy source. The emission factor, 0.1 kilogram per kilowatt hour, from waterfall electricity source is then conveyed to the chocolate assembly.
In the Output tab, you can view for how long the chocolate assembly runs across different production documents. You can also view how the total carbon equivalent is distributed across various production documents.
You can view that the chocolate assembly ran for 0.166 hours for the first production document. If you deep dive further into this, you can view the per hour carbon equivalent, which is 422.311 kilogram per hour and total carbon equivalent in tons, which is 0.070 tons.
If you go back to the Overview tab, you can see that from the chocolate assembly, 0.70 tons of emission is distributed to the respective production document.
If you click on the respective production document, you can see that only one product was produced, which is the chocolate cake. This implies that 0.70 tons of the chocolate assembly emissions are distributed to the production of chocolate cake. Since in this learning journey, we mainly focus on scope 1 and scope 2 emissions, we will only discuss only the resource usage.
Note
Biscuit and dark chocolate are ingredients in the production process, which fall under scope 3.1 category – product acquisition and product inventory – and are beyond the scope of this learning journey.
Watch the following video to recap reviewing and analyzing the results of the calculation in CO2 equivalents.