Pursuant to Article 116 of the Energy Law

3.3.2.3. Adequacy of generation 
3.3.2.3.1. If during the analysis of adequacy of generation it is established that it is impossible 
to ensure transmission balance (lack or significant surplus of generated power versus 
consumption), this information must be especially emphasized in the Transmission System 
Development Plan. 
3.3.2.4. Load-frequency control
3.3.2.4.1. For each time profile for which planning is done, it is examined whether the reserve 
for primary, secondary and tertiary control at the transmission level is higher than the 
minimum quantity of the reserve prescribed by the Grid Code. 
3.3.2.4.2. If the prospective reserve for tertiary control does not meet prescribed quantity, 
adequate transmission capacity on interconnected transmission lines has to be planned for 
importing power when examining the adequacy referred to in item 3.3.2.3. of the Grid Code.
3.3.2.5. Voltage Control 
3.3.2.5.1. If potential problems related to voltage control are identified, JSC EMS shall 
include in the Transmission System Development Plan, measures within its competence and 
warnings if problems are caused by inappropriate operation of the facilities of the 
transmission system users (for example, power consumption factor over permitted limit), and 
deviations from nominal technical characteristics (permanent constraints of generator units 
versus designed parameters, that is, the parameters prescribed by the Grid Code, including 
voltage control, and similar). 
3.3.2.6. Stability 
3.3.2.6.1. JSC EMS shall, if necessary, and at least once every five years, include in its 
Transmission System Development Plan, the stability study of the transmission system. 
3.3.2.6.2. If the results of stability analysis indicate the possible shortcomings of automatic 
voltage control, primary control, and local equipment for secondary control and protection 
settings, JSC EMS shall take necessary measures within the transmission grid (installation, 
pre-protection settings, etc.), or agree upon the necessary measures with the users of the 

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transmission grid (installation of stabilization devices on generation units, pre-setting and 
installation of primary control and voltage control, secondary control setting, etc.).