| Classification | Variable | Abbreviation |
| Explained Variable | Energy Consumption | EC |
| Explaining Variable | Urbanization Rate | UR |
| Threshold Variable | Per Capita GDP | PCGDP |
| Control Variable | Per Capita GDP | PCGDP |
| Level of Industrialization | LI | |
| Urban Population Density | UPD | |
| Proportion of the Tertiary Industry | PTI | |
| Educational Level | EL | |
| Per Capita Budgetary Expenditure | PCBE |