Annual system operator reviews and assessments
The Authority is required to review and assess the performance of the system operator every financial year.
This is related to the Authority's role as funder of the system operator. The performance of the System Operator is reviewed and assessed under headings representing the review requirements in the Code.
The system operator undertakes an annual self-review and assessment of its performance against Principal Performance Objectives (PPOs). The report also includes information on security issues, security of supply, commissioning generation, rule changes, compliance, rulings panel, near misses, ancillary service provider performance and people and resources.
2021/22
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System Operator annual self-review 21-22
System-Operator-annual-self-review-21-22_FINAL.pdf (PDF, 960 KB)
Last updated: 27 October 2022
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Annual review of system operator performance - 2021 -2022
Annual-review-of-system-operator-performance-1-July-2021-to-30-June-2022.pdf (PDF, 381 KB)
Last updated: 07 March 2023
2020/21
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Annual review of system operator performance 2020-21
Annual-review-of-the-system-operator-performance-2020-21.pdf (PDF, 386 KB)
Last updated: 17 January 2022
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System operator annual self-review 2020-21
SO-Annual-Review-2020-21.pdf (PDF, 2 MB)
Last updated: 06 September 2021
2019/20
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Annual review of system operator performance 2019-20
Annual-review-of-system-operator-performance-2019-20.pdf (PDF, 258 KB)
Last updated: 02 February 2021
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System operator annual self-review 2019-20
SO-Annual-Self-Review-and-Assessment-2019-2020.pdf (PDF, 2.1 MB)
Last updated: 07 September 2020
2018/19
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Download a ZIP file containing all documents
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Annual review of system operator performance 2018-19
Annual-review-of-system-operator-performance-2018-19.pdf (PDF, 374 KB)
Last updated: 17 December 2019
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System operator annual self-review 2018/19
SO-Annual-Review-2018-19.pdf (PDF, 4.3 MB)
Last updated: 03 September 2019
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Financial Performance Addendum to SO Annual Self Review and Assessment 2018-2019
Financial-Performance-Addendum-to-SO-Annual-Self-Review-and-Assessment-2018-2019.pdf (PDF, 742 KB)
Last updated: 29 November 2019
2017/18
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Annual review of system operator performance 2017-18
Annual-review-of-system-operator-performance-2017-18.pdf (PDF, 741 KB)
Last updated: 04 March 2019
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System Operator annual self-review 2017/18
TP-System-Operator-Annual-Review-2017-18.pdf (PDF, 2.8 MB)
Last updated: 07 September 2018
2016/17
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System Operator annual self-review 2016/17
System-Operator-Annual-Self-Review-and-Assessment-2016-17.PDF (PDF, 3.9 MB)
Last updated: 13 March 2018
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Annual review of system operator performance 2016-17
AnnualReviewSOperformance-2016-17.pdf (PDF, 671 KB)
Last updated: 13 March 2018
2015/16
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System Operator annual self-review 2015/16
TP-System-Operator-Self-Review-FINAL-2015-16.pdf (PDF, 5.5 MB)
Last updated: 15 November 2017
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Authority review of system operator performance 2015/16
AnnualReviewOfSOperformance2015-16.docx.PDF (PDF, 177 KB)
Last updated: 24 January 2017
2014/15
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System Operator annual self-review 2014/15
SO-Annual-Review-2014-15.PDF (PDF, 2.2 MB)
Last updated: 15 November 2017
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Authority review of system operator performance 2014/15
AnnualReviewOfSOperformance2014-15.docx.pdf (PDF, 394 KB)
Last updated: 12 February 2016
2013/14
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System Operator annual self-review 2013/14
SO-Annual-Review-2013-14.pdf (PDF, 1.6 MB)
Last updated: 15 November 2017
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Authority review of system operator performance 2013/14
Annual-Review-Of-SO-Performance-2013-14.PDF (PDF, 500 KB)
Last updated: 15 September 2015
2012/13
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System Operator annual self-review 2012/13
SO-Annual-Review-2012-13-Final.pdf (PDF, 1.4 MB)
Last updated: 15 November 2017
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Authority review of system operator performance 2012/13
AnnualReviewOfSOPerformance-2012-13.pdf (PDF, 345 KB)
Last updated: 17 August 2016
2011/12
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System Operator annual self-review 2011/12
SO-Annual-Review-2011-12.pdf (PDF, 2 MB)
Last updated: 15 November 2017
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Authority review of system operator performance 2011/12
Authority-review-ofsystem-operator-performance-2011-12.pdf (PDF, 341 KB)
Last updated: 17 August 2016
2010/11
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System Operator annual self-review 2010/11
SO-Annual-Review-2010-11.pdf (PDF, 1.1 MB)
Last updated: 15 November 2017
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Authority review of system operator performance 2010/11
SO-performance-2010-11.pdf (PDF, 126 KB)
Last updated: 17 August 2016
2009/10
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System Operator annual self-review 2009/10
SO-self-review-2009-10.pdf (PDF, 608 KB)
Last updated: 15 November 2017
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Authority review of System Operator performance 2009/10
2009-10-review.pdf (PDF, 91 KB)
Last updated: 28 June 2015
2008/09
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System Operator annual self-review 2008/09
SO-Annual-Review-2008-09.pdf (PDF, 1002 KB)
Last updated: 15 November 2017
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Commission review of system operator performance 2008/09
SOPerftReview-Dec09.pdf (PDF, 124 KB)
Last updated: 17 August 2016
2007/08
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System Operator annual self-review 2007/08
SO-Annual-Review-2007-08.pdf (PDF, 1.1 MB)
Last updated: 15 November 2017
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Commission review of system operator performance 2007/08
SOPerfReview-Dec08.pdf (PDF, 132 KB)
Last updated: 17 August 2016
2006/07
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System Operator annual self-review 2006/07
SO-Annual-Review-2006-07.pdf (PDF, 1.2 MB)
Last updated: 15 November 2017
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Commission review of system operator performance 2006/07
SO-Annual-Review-performance-2006-07.pdf (PDF, 137 KB)
Last updated: 17 August 2016
2005/06
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System Operator annual self-review 2005/06
SO-Annual-Review-2005-06.pdf (PDF, 279 KB)
Last updated: 15 November 2017
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Commission review of system operator performance 2005/06
SO-Annual-Review-performance-2005-06.pdf (PDF, 167 KB)
Last updated: 17 August 2016
2004/05
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System Operator annual self-review 2004/05
SO-Annual-Review-2004-05-final.pdf (PDF, 111 KB)
Last updated: 15 November 2017
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Commission review of system operator performance 2004/05
Commission-Jun-051.pdf (PDF, 91 KB)
Last updated: 17 August 2016