A good knowledge of the starting situation is of key importance; therefore, ELES regularly analyses many consumption categories from past periods:
- total consumption in the transmission network,
- peak power,
- electric power transmission loss, and
- offtake of electric power from the transmission network by distribution companies and larger direct consumers, with a special emphasis on analysis of savings in managing energy use or its effective use by users.
ELES then prepares long-term forecasts considering the projections of demographic and economic developments in the Republic of Slovenia.