eValuate module compares the results of up to three variants with a reference case. It evaluates the results of the 
eVariant nodes. All results of the eValuate module are derived from the data in the corresponding eVariant modules.
To compare your variants, use the eValuate module. Create a new eValuate node in the project tree: in the Home ribbon, in the Add to project group, click the 
Variant comparison button (see following figure).
The eValuate module now appears in the project explorer below the already created modules, and the form for the input data of the eValuate comparison module opens on the right side of the workspace (see following figure).
Open the Economy ribbon with a click on its tab and select the Reference case and the Variants to be compared from the drop-down lists in the group eValuate: variants to be evaluated.
In the eValuate form Economic Parameters (subform of Input data), you can set the Period under consideration (in years) and, also separately for Stakeholders (actors), the Interest rate and the Company tax rate.
Select the variants to be evaluated.
Select the eValuate node in the Project explorer and then start the variant comparison with the 
TOP-Energy application button on the left side of the ribbon.
starts the execution of the module selected in the Project explorer. 
Under the Overview tab, the results of the comparison of variants are shown in diagrams in relation to the reference case (see following figure).
The tabs Reference case, Variant 1, Variant 2, and Variant 3 contain economical and ecological evaluations, including operating costs, revenues, and CO2 emissions (see following figure, depending on the input data).
