Otahuhu Substation Diversity

Monthly Snapshot

Ref: OTA SUBEST DEV 01
Investment Proposal to Electricity Commission	December 2006
Electricity Commission Approval	August 2007
Projected Commissioning Date	June 2010
Monthly Update
August 2010	Commissioning ceremony 19 August. Substation now fully commissioned.
July 2010	Site area completion works continue
June 2010	Cutover of remaining circuits (from OTC and SWN) timed for spring
May 2010	Incoming and outgoing circuits now transferred to GIS
Apr 2010	GIS/AIS substation commissioned successfully 7 April. The rest of the project is planned to be substantially commissioned by the end of June
Mar 2010	Commissioning of the GIS facility commences 6 April
Feb 2010	Commissioning planning has begun
Jan 2010	Physical works diminishing as project nears commissioning phase
Nov 2009	Commencement of commissioning slipped until April 2010
Oct 2009	Work continuing on GIS installation and EHV cable troughs