Home » Industry » Electricity Commission archive » Grid investment archive » Grid Upgrade Plans - archive » 2008 Grid Upgrade Plan - archive » Redclyffe 220 110kv interconnection investment proposal - history

Redclyffe 220 110kv interconnection investment proposal - history

On 3 July 2009, Transpower New Zealand Limited (Transpower) submitted to the Electricity Commission a reliability investment for approval under rule 13 of section III of part F of the Electricity Governance Rules 2003. The investment was part of the 2008 Grid Upgrade Plan.

Current status

• Proposal deferred

On 11 February 2010, Transpower wrote to the Commission advising that it wished to defer the Redclyffe 220/110kV Interconnection Investment Proposal.

• • Provide written comments on Transpower's proposals; and
  • Request that the Commission consider alternatives to Transpower's proposals.

Transpower's application

Transpower submitted the Redclyffe 220/110kV Interconnection Investment Proposal as a reliability investment. The proposal involved the installation of 150 MVA 220/110 kV interconnecting transformer at Redclyffe by 2011. Transpower sought approval of up to $9.0 million for the proposal.

Opportunity for comment

Under rule 13.3.2 and rule 13.3.5 of section III of part F of the Electricity Governance Rules 2003, the Commission gave notice to provide designated transmission customers and parties affected by the proposals with an opportunity to:

Comments and/or requests were sought by the Commission by 5.00 pm on Wednesday, 29 July 2009. The Commission received one submission.

Timetable

On 14 July 2009, the Commission and Transpower agreed on a timetable for consultation and approval of the Redclyffe 220/110kV Interconnection Investment Proposal.

Proposal deferred

On 11 February 2010, Transpower wrote to the Commission advising that it wished to defer the Redclyffe 220/110kV Interconnection Investment Proposal. Transpower advised that it would be conducting a trial at Redclyffe to investigate whether the capacity ratings of interconnecting transformers at specific sites can be increased without compromising system security.

Transpower expected that the trial would last for 12 months, after which Transpower would decide whether to proceed with the investment proposal, withdraw it or amend it.

On 22 February 2010, the Commission wrote to Transpower advising that the contents of Transpower's letter dated 11 February 2010 had been noted.

This page is related to: Transmission.

Back to top Last updated on 7 September 2010