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Update: 16 July 2010

Upper North Island Dynamic Reactive Support Investigation

Notice of intention to approve proposal was published by the Electricity Commission on 5 July 2010. Requests for public conference to be received by 19 July 2010.

Next milestone: Approval or public conference request by 19 July 2010.

Lower South Island Facilitating Renewables Project

A public conference was held in Alexandra on 28 June 2010. A decision from the Electricity Commission is expected in August 2010.

Next milestone: Final decision – August 2010.

Lower South Island Reliability Project

Grid Upgrade Proposal submitted to the Electricity Commission on 31 May 2010.

Next milestone: Notice of Intention from Electricity Commission expected 6 August 2010.

Lower Waitaki Reliability Investigation Project

Decision has been made to delay the submission of a proposal to allow for refinement of property costs, updating of load forecasts and reviewing the value of lost load. 

Next milestone: Updating landowners on progress to date – July/August.

Bunnythorpe-Haywards Reconductoring Project

We have decided to progress this project separately from the Lower North Island Transmission investigation. The two projects have very similar underlying capacity assumptions but need to progress to very different timeframes.

Next milestone: During August and September, inform landowners and local authorities about the project.

Upper South Island Grid Upgrade Investigation Project

Currently preparing summer load forecasts for use in modelling. Preparing a need report that outlines voltage and thermal limits, maintenance and high impact low probability issues that need to be addressed.

Next milestone: Draft need report prepared for public circulation in August/September.

Te Kowhai Over Voltage

A draft long list has been prepared that identifies ways for managing high voltages at the Te Kowhai grid exit point. High level economic assessment has confirmed small economic benefit, probably not sufficient to justify any capital expenditure.

Next milestone: Completion of a status report to summarise analysis to date and options considered.

Waikato 110 kV Line Investigation

Twelve submissions were received by 11 June. A consultation feedback summary document and submissions received are now available.

Next milestone: July 2010 – Establish list of credible options.

Opunake-Stratford conductor replacement

Condition assessment report shows that conductor replacement is needed. Connected customers have confirmed that increased line capacity is not required.

Next milestone: SSR process to begin this month.

Central Park transformer replacement and improving security

A preliminary design to install a Special Protection Scheme (SPS) at Central Park Substation has been completed.  The SPS will enable the two transformers T3 & T4 to be replaced. Commissioning a contingency plan to install a nation spare transformer should one of the existing transformers fail.

Next milestone: August – Completion of SSR to design a Special Protection Scheme.

Lower North Island Transmission Study

Continuing to meeting with generation companies to ascertain future generation plans.

Next milestone: November – Completion of a need report.