CHAPTER IIIU.K. RESTORATION PLAN

SECTION 1 U.K. General provisions

Article 23U.K.Design of the restoration plan

1.By 18 December 2018, each TSO shall design a restoration plan in consultation with relevant DSOs, SGUs, [F1the regulatory authority] and the other TSOs in that synchronous area.

2.When designing its restoration plan, each TSO shall take into account, at least, the following elements:

(a)the behaviour and capabilities of load and generation;

(b)the specific needs of the high priority significant grid users listed pursuant to paragraph (4); and

(c)the characteristics of its network and of the underlying DSOs networks.

3.The restoration plan shall contain at least the following provisions:

(a)the conditions under which the restoration plan is activated, as provided for in Article 25;

(b)restoration plan instructions to be issued by the TSO; and

(c)measures subject to real-time consultation or coordination with identified parties.

4.In particular, the restoration plan shall include the following elements:

(a)a list of the measures to be implemented by the TSO on its installations;

(b)a list of the measures to be implemented by DSOs and of the DSOs responsible for implementing those measures on their installations;

(c)a list of the SGUs responsible for implementing on their installations the measures that result from mandatory requirements set out in Regulations (EU) 2016/631, (EU) 2016/1388 and (EU) 2016/1447 or from national legislation and a list of the measures to be implemented by those SGUs;

(d)the list of high priority significant grid users and the terms and conditions for their disconnection and re-energisation;

(e)a list of substations which are essential for its restoration plan procedures;

(f)the number of power sources in the TSO's control area necessary to re-energise its system with bottom-up re-energisation strategy having black start capability, quick re-synchronisation capability (through houseload operation) and island operation capability; and

(g)the implementation deadlines for each listed measure.

5.The restoration plan shall include at least the following technical and organisational measures specified in ChapterĀ III:

(a)re-energisation procedure, in accordance with Section 2;

(b)frequency management procedure, in accordance with Section 3; and

(c)resynchronisation procedure, in accordance with Section 4.

6.The measures contained in the restoration plan shall comply with the following principles:

(a)their impact on system users shall be minimal;

(b)they shall be economically efficient;

(c)only those measures that are necessary shall be activated; and

(d)they shall not lead the interconnected transmission systems into emergency state or blackout state.