Pursuant to Article 116 of the Energy Law

3.3.1.9. JSC EMS, based on recorded historical data, data submitted by users of the 
transmission system and submitted requests for connection to the transmission system, 
creates a mathematical model of consumption (active and reactive power) for all places of 
connection. When modeling the consumption, JSC EMS as a rule produces several different 
scenarios related to future consumption, which cover different economic development routs 
of the Republic of Serbia, thus providing the test of flexibility, i.e. sensitivity of planned 
facilities in the transmission .system.
3.3.1.10. Based on the transmission system parameters, JSC EMS mathematically models the 
transmission system. This model shall take into account the real current limitations of all 
elements of the transmission system and system protection settings. 
3.3.1.11. When modelling the generation, JSC EMS as a rule produces several different 
scenarios of possible development of the generation system of the Republic of Serbia, thus 
providing the test of flexibility, i.e. sensitivity of planned projects in the transmission grid. 
Furthermore, JSC EMS takes into account recorded limitations in operation of these units that 
deviate from nominal parameters, as well as their unavailability. Limitations present in longer 
time period, as well as limitations that periodically occur, are dully taken into account. The 
frequency of these occurrences is also treated. 
3.3.1.12. JSC EMS archives all events that are relevant for the transmission system 
development planning. Based on these archives, JSC EMS determines the schedules of 
generation and consumption that will be included in the analyses that are used for planning 
the transmission system development. 
3.3.1.13. When analysing the operating modes of the transmission system, the information on 
the planned unavailability of generation units and transmission grid elements are taken into 
consideration.
3.3.1.14. JSC EMS notifies, by January 31 of the current year, all users of the transmission 
system (including future transmission system users whose request for the connection facility 
to the transmission system is approved) on the data that must be delivered for the purposes of 
making the Transmission System Development Plan (data necessary for planning future 
development are included in the Annex A: Standard data). Data are submitted in the format 
specified by JSC EMS.
3.3.1.15. Users of the transmission system submit to JSC EMS all requested information 
specified under item 3.3.1.14. by April 30 of the current year. 
3.3.1.16. JSC EMS may request from the transmission system user to submit other 
information needed for the purposes of modeling facilities of transmission system users, i.e.