Calculate Emissions for Machines

Emission factors for various consumptions can be maintained on the machine, which are later included in the overall calculation of the emission value.

Emission factors for natural gas and electricity can be defined in the master data using global value rules. The emission factor for electricity depends on the reference location (production location) and reference date of the should cost calculation, and the emission factor for natural gas depends on the data origin of the machine ("Own Company" or "FACTON").

Regardless, the emission factors can also be overwritten in the Details of the machine.

The relevant quantity of the machine (machine time) is a key factor for calculating the emission value.

The calculation formulas for emission factors and emission values are illustrated below.

Calculate Emission Factors at the Machine

The individual scope 1 and scope 2 emission factors are generally calculated by the emission factor (EF) for gas or electricity and the respective consumption.

Determining factors and consumptions

Determining scope 1 emission factor values (gas, miscellaneous)

• The value for the Natural Gas Emission Factor can be stored as global value rules in the master data Emission Factors, or can be overridden in the Details of the machine with F12
• The value for Gas Consumption can be defined directly in the Details of the machine, or is assumed from the variable machine costs (if maintained)
• Optional: In addition, you can add up to 3 user-specific factors ("Miscellaneous") to be included in the calculation of scope 1 emission factor, or the value are assumed from the variable machine costs (if maintained)

Determining scope 2 emission factor values (electricity)

• The value for the Electricity Emission Factor can be stored as global value rule in the master data Emission Factors, or can be overridden in the Details of the machine with F12
• The energy consumption is calculated from the product of the "Connected Load" and "Electricity Utilization" property values which can be directly defined in the Details of the machine, or the value is assumed from the variable machine costs (if maintained)

Calculation formula for emissions at the machine

The emission value finally results from the individual emission factors (EF) and the relevant quantity of the machine:

or

Calculation Example: Emissions at the Machine

The following is an example of how to define and include machine emissions in the calculation:

1. Maintain emission data (globally)
2. Insert machine in should cost calculation
3. Maintain emission data (locally)

 

Maintain emission data (globally)

• You are logged in as SC Master Data Administrator.
• You are in the Master Data workspace.

1. Navigate in Explorer to Global Properties > Provided > Emission Factors.

   The value rules categories for natural gas and electricity are available.

   

2. Click on Emission Factor Natural Gas and enter a new value rule (CTRL+N) with the following properties:
   

   Data Origin	EF Natural Gas
   ◣Own Company	◣0.356 kg/m³

3. Click on Emission Factor Electricity and enter a new value rule (CTRL+N) with the following properties:
   

   Reference Location	Reference Date From / To	EF Electricity
   ◣<according to the production location of your should cost calculation>	◣<according to the reference date of your should cost calculation>	◣0.829 kg/kWh

4. Save and publish your changes.

Insert machine in should cost calculation

• You are logged in as a Calculator.
• You are in the Calculations workspace.
• You have opened a calculation.see Search and Open Calculation
• You are in the Structure view.

Maintain emission data (locally)

1. Select the machine in the Structure view.
   The Relevant Quantity in the Details > Calculation was calculated based on the cycle time of the process: "10.50 min/cycle".

2. Switch to the Details Greenhouse Gas Emission view schema.
   The previously defined values are assumed from the master data (may be rounded):

   Scope 1 Emission Factor Emission Factor Natural Gas at Machine
   Emission Factor Natural Gas	0.36 kg/m³
   Scope 2 Emission Factor Emission Factor Electricity at Machine
   Emission Factor Electricity	0.83 kg/kWh

3. Enter the following consumption values for gas and electricity:

   Scope 1 Emission Factor Emission Factor Natural Gas at Machine
   Gas Consumption	◣2.00 m³/h
   Scope 2 Emission Factor Emission Factor Electricity at Machine
   Connected Load	◣3.00 kW

   ("Electricity Utilization" is predefined with "85.00 %" by default.)

   The emissions were calculated based on the maintained value rules, consumption values and relevant quantity:

   Scope 1 Emission Factor* Emission Factor Natural Gas at Machine	0.71 kg/h
   Scope 2 Emission Factor Emission Factor Electricity at Machine	2.11 kg/h
   Total Emission Factor	2.83 kg/h
   Relevant Quantity	10.50 min/cycle
   Scope 1 Emission	0.12 kg/cycle
   Scope 2 Emission	0.37 kg/cycle
   Total Emission	0.49 kg/cycle

   *Optionally, you can also maintain user-specific emission factors ("Emission Factor Miscellaneous"), which are to be included in the calculation of scope 1 emissions as well.