Invitation to comment: Credible Event Review (CER)

Closing date for submissions 5:00pm, Friday 29th June 2018

Transpower as the System Operator has reviewed the Classification for Interconnecting Transformers. This has been completed as part of its responsibility under the Policy Statement, to undertake a Credible Event Review (CER).


We extend the opportunity to consult with participants on the following:

  • The approach and methodology of the interconnecting transformer classification assessment
  • The proposed outcomes of this assessment
  • Proposed changes to the Policy Statement

General feedback on any changes is also welcome.

The interconnection transformer assessment is comprised of the following three documents.

Interconnecting Transformer (ICT) Classification Report [ pdf 1003.69 KB ]

Appendix 1 - North Island ICTs [ pdf 3.26 MB ]

Appendix 2 - South Island ICTs [ pdf 2.01 MB ]

Submit Your Feedback

Please provide us with any comments no later than 5:00pm, Friday 29th June 2018.

Please email electronic versions (Microsoft Word or PDF) with the subject line “Comments on ICT Classification Report” to

Receipt of comments will be acknowledged electronically. Please contact Bharti Patel if you do not receive electronic acknowledgement of your comments within three business days.