Update: 18 September 2009

Upper North Island Dynamic Power Support Investigation

We have released an RFP (15 September) inviting firm proposals for Dynamic Reactive Support. Costing of capital projects has been completed.

• Dynamic Reactive Support RFP
• View more info on the Upper North Island Dynamic Power Support investigation

Lower South Island Facilitating Renewables Project

Submissions are being considered with a view to confirming or amending the preferred options.

Next milestones: November - Submission of an Investment Proposal to the Electricity Commission.

• View more info on the Lower South Island Facilitating Renewables project

Lower South Island Reliability Project

The short list of options for this project will be available soon.

Next milestone: Publish short list of options.

• View more info on the Lower South Island reliability project

Lower Waitaki Reliability Investigation Project

The long list has now been culled to a short list and the short list of options will be available shortly. Work has commenced on the detailed costing of the proposed line upgrade options.

Next milestone:  Publish short-listed options.

• View more info on the Lower Waitaki Reliability Investigation Project

Stratford-Wanganui Reconductoring Investigation

An investment proposal for the Stratford to Wanganui 110 kV section has been submitted to the Electricity Commission.  The proposal is to replace the existing conductor with a larger capacity conductor to avoid constraining the parallel 220 kV circuits and to enable renewable generation.

Next milestone: 06 November - Electricity Commission issues Notice of Intention to either approve or decline the proposal

• Stratford-Wanganui conductor replacement

Bay of Plenty Interconnection Capacity Investigation

Work is continuing on the Investment Proposal. The preferred solution is to increase the voltage on the Kaitimako–Tarukenga line and install two 220kV transformers at the Kaitimako substation.

Next milestone: October - Submission of an Investment Proposal to the Electricity Commission

• View more on the Bay of Plenty Interconnection Capacity Investigation

Redclyffe Interconnecting Transformer Project

Waiting for the Electricity Commission to declare its notice of intention.

Next milestone: Soon - Notice of intention pending from the Electricity Commission.

• View more on the Redclyffe Interconnecting Transformer Project

Bunnythorpe-Haywards thermal upgrade project

Transpower received two submissions on the Bunnythorpe¬-Haywards thermal upgrade as part of the consultation on the wider Central North Island upgrade project.

Next milestone: To be confirmed - New timetable for Bunnythorpe–Haywards investment proposal

• View more info on the Bunnythorpe-Haywards Proposal

National Auto Synchronisation Points Investigation Project

Transpower is investigating the installation of auto synchronisation points at relevant substations in its network.  A Request for Information has been released for consultation.

Next milestone: 30 September - Request for Information consultation ends.

• View more information on the National Auto-synchronisation Investigation Project

Projects in Development

Transpower has a number of other projects in earlier stages of investigation that may or may not proceed to Electricity Commission approval.   The projects currently under investigation include:

• Lower North Island Transmission to Enable Renewables study
• Waikato 110kV line investigation
• Upper South Island Grid Upgrade (re-opening work from the original South Island Grid Upgrade project)

We will expand on each of these projects individually as they develop.