Commission Regulation (EU) 2017/1485Show full title

Article 15 U.K. Annual report on operational security indicators

1. By 30 September, [F1 the national electricity transmission system operator] shall publish an annual report based on the incidents classification scale adopted in accordance with [F2 Article 30(1)(i) of Regulation (EU) 2019/943 as that provision applied in EU law immediately before IP completion day]. The [F3 regulatory authority] may provide its opinion on the format and contents of that annual report, including the geographical scope of the incidents reported F4 ... and any relevant historical information.

F5 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. The annual reports referred to in paragraph 1 shall contain at least the following operational security indicators relevant to operational security:

(a) number of tripped transmission system elements per year per TSO;

(b) number of tripped power generation facilities per year per TSO;

(c) energy not supplied per year due to unscheduled disconnection of demand facilities per TSO;

(d) time duration and number of instances of being in the alert and emergency states per TSO;

(e) time duration and number of events within which there was a lack of reserves identified per TSO;

(f) time duration and number of voltage deviations exceeding the ranges from Tables 1 and 2 of Annex II per TSO;

(g) number of minutes outside the standard frequency range and number of minutes outside the 50 % of maximum steady state frequency deviation per synchronous area;

(h) number of system-split separations or local blackout states; and

(i) number of blackouts involving two or more TSOs.

4. The annual report referred to in paragraph 1 shall contain the following operational security indicators relevant to operational planning:

(a) number of events in which an incident contained in the contingency list led to a degradation of the system operation state;

(b) number of the events referred to in point (a) in which a degradation of system operation conditions occurred as a result of unexpected discrepancies from load or generation forecasts;

(c) number of events in which there was a degradation in system operation conditions due to an exceptional contingency;

(d) number of the events referred to in point (c) in which a degradation of system operation conditions occurred as a result of unexpected discrepancies from load or generation forecasts; and

(e) number of events leading to a degradation in system operation conditions due to lack of active power reserves.

5. The annual reports shall contain explanations of the reasons for incidents at the operational security ranking scales 2 and 3 as per the incidents classification scale [F6 referred to in paragraph 1]. Those explanations shall be based on an investigation of the incidents by TSOs which process shall be set out in the incidents classification scale. TSOs shall inform the [F7 regulatory authority] about an investigation in due time before it is launched. [F8 The regulatory authority] may be involved in the investigation upon [F9 its] request.

Textual Amendments

F1 Words in Art. 15(1) substituted (E.W.S.) (31.12.2020) by The Electricity Network Codes and Guidelines (System Operation and Connection) (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/533), reg. 1(2), Sch. 1 para. 16(2)(a)(i) (as amended by S.I. 2020/1016, regs. 1(2), 6(2)); 2020 c. 1, Sch. 5 para. 1(1)

F2 Words in Art. 15(1) substituted (E.W.S.) (31.12.2020) by The Electricity Network Codes and Guidelines (System Operation and Connection) (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/533), reg. 1(2), Sch. 1 para. 16(2)(b)(i) (as amended by S.I. 2020/1016, regs. 1(2), 6(2)(3)(g)); 2020 c. 1, Sch. 5 para. 1(1)

F3 Words in Art. 15(1) substituted (E.W.S.) (31.12.2020) by The Electricity Network Codes and Guidelines (System Operation and Connection) (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/533), reg. 1(2), Sch. 1 para. 16(2)(b)(i) (as amended by S.I. 2020/1016, regs. 1(2), 6(2)); 2020 c. 1, Sch. 5 para. 1(1)

F4 Words in Art. 15(1) omitted (E.W.S.) (31.12.2020) by virtue of The Electricity Network Codes and Guidelines (System Operation and Connection) (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/533), reg. 1(2), Sch. 1 para. 16(2)(b)(ii) (as amended by S.I. 2020/1016, regs. 1(2), 6(2)); 2020 c. 1, Sch. 5 para. 1(1)

F5 Art. 15(2) omitted (E.W.S.) (31.12.2020) by virtue of The Electricity Network Codes and Guidelines (System Operation and Connection) (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/533), reg. 1(2), Sch. 1 para. 16(3) (as amended by S.I. 2020/1016, regs. 1(2), 6(2)); 2020 c. 1, Sch. 5 para. 1(1)

F6 Words in Art. 15(5) substituted (E.W.S.) (31.12.2020) by The Electricity Network Codes and Guidelines (System Operation and Connection) (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/533), reg. 1(2), Sch. 1 para. 16(4)(a) (as amended by S.I. 2020/1016, regs. 1(2), 6(2)); 2020 c. 1, Sch. 5 para. 1(1)

F7 Words in Art. 15(5) substituted (E.W.S.) (31.12.2020) by The Electricity Network Codes and Guidelines (System Operation and Connection) (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/533), reg. 1(2), Sch. 1 para. 16(4)(b) (as amended by S.I. 2020/1016, regs. 1(2), 6(2)); 2020 c. 1, Sch. 5 para. 1(1)

F8 Words in Art. 15(5) substituted (E.W.S.) (31.12.2020) by The Electricity Network Codes and Guidelines (System Operation and Connection) (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/533), reg. 1(2), Sch. 1 para. 16(4)(c)(i) (as amended by S.I. 2020/1016, regs. 1(2), 6(2)); 2020 c. 1, Sch. 5 para. 1(1)

F9 Word in Art. 15(5) substituted (E.W.S.) (31.12.2020) by The Electricity Network Codes and Guidelines (System Operation and Connection) (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/533), reg. 1(2), Sch. 1 para. 16(4)(c)(ii) (as amended by S.I. 2020/1016, regs. 1(2), 6(2)); 2020 c. 1, Sch. 5 para. 1(1)