Parameterized scenario analysis allows you to test alternative values for a calculation, without changing the model's default values. You can change a value directly within a scenario, or save up to five named scenarios and select up to two to calculate and compare side by side.
Before you start
Only parameters marked as configurable on the parameters page are available here. If a parameter you need isn't listed, mark it as configurable on the parameters page first. This doesn't affect any existing calculations.
Create scenarios
Open a calculation setup and expand Parameterized scenario analysis. Each row shows a configurable parameter and its default value from the model (default values cannot be edited from this section).
Select Add scenario. You can save up to five scenarios; the button disables once five are created.
Each new scenario starts pre-filled with the current default values, under an auto-generated name ("Scenario 1", "Scenario 2", and so on).
Enter a different value directly under the default within that scenario's column to change it. Values you haven't changed stay grayed out and match the default; changed values appear in bold. Clear a cell to go back to the default.
You can rename a scenario by selecting its name in the column header. Each name must be unique, and "Default value" is reserved.
To delete a scenario, use the menu (⋮) next to its name. Deletion is permanent.
Select scenarios and calculate
Each scenario, including Default value, has a checkbox above its column. At least one must stay selected, and at most two can be selected at a time.
Default value is selected to begin with, so the button reads Calculate until you select your first scenario, which switches it to Compare.
Select the button to run the calculation. With two columns selected, results for both appear side by side, so you can compare environmental performance without switching between calculations.
Good to know
Parameter scenarios don't change the model or primary data library. They only affect the calculation results when selected.
You can save up to five scenarios, but only compare two at a time.
Only parameters explicitly marked as configurable can be adjusted this way. This keeps the rest of the data protected from accidental changes.
Scenarios are saved in the model or primary data library, so the same five scenarios appear in every calculation setup there.