CHAPTER IIIRESTORATION PLAN
SECTION 1 General provisions
Article 25Activation of the restoration plan
1.
Each TSO shall activate the procedures of its restoration plan in coordination with the DSOs and SGUs identified pursuant to Article 23(4) and with restoration service providers in the following cases:
(a)
when the system is in the emergency state in accordance with the criteria in Article 18(3) of Regulation (EU) 2017/1485, once the system is stabilised following activation of the measures of the system defence plan; or
(b)
when the system is in the blackout state in accordance with the criteria in Article 18(4) of Regulation (EU) 2017/1485.
2.
During system restoration, each TSO shall identify and monitor:
(a)
the extent and borders of the synchronised region or synchronised regions to which its control area belongs;
(b)
the TSOs with which it shares a synchronised region or synchronised regions; and
(c)
the available active power reserves in its control area.
3.
Each DSO and SGU identified pursuant to Article 23(4), as well as each restoration service provider shall execute without undue delay the restoration plan instructions issued by the TSO, pursuant to point (b) of Article 23(3) in accordance with the restoration plan procedures.
F14.
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