3.2.1. Variable Selection

The selected variables are based on the discussion regarding the non-linearity of the EAF process, reported energy sources and energy sinks, the correlative relationships of the variables to the EE consumption, and the scrap variables governed by the three scrap representations (see Section 2 and Section 3.1). The selected variables from each type are shown in Table 2.


**Table 2.** The variables used in the models.
