We are working with the system operator on the next steps to implement extended reserve. This includes developing the selection methodology used to select extended reserve providers. The economic value of the cost of interruption to consumers (VoLL) is one of several factors the selection methodology will take into account.
Price Waterhouse Coopers (PwC) has determined the VoLL for different sector categories in the North Island, where the new extended reserve regime will apply in the first instance. The calculations are based on the VoLL survey we conducted in 2010. The report sets out PwC’s estimates of the average VoLL for sector categories in the North Island, by individual industry.
Published: Enquiry into automatic under-frequency load shedding (AUFLS) activation
We have completed our enquiry into the 12 November 2013 AUFLS activation. The activation resulted from an HVDC commissioning test of Pole 3 and caused 401 MW of lost load. While Transpower, as the grid owner, was found to be the causer of the event; this enquiry focuses on the role of the system operator in approving the HVDC test plans.
The enquiry acknowledges the preparation and planning that the system operator undertook for testing and commissioning Pole 3. The 12 November 2013 AUFLS activation was extremely unfortunate, considering the diligence that the system operator had applied to planning for the tests. The enquiry found that the system operator could improve the way it approves test plans. These improvements would mean that the system operator could identify and more rigorously challenge conclusions made by asset owners (and the assumptions they are based on) when the system operator approves test and commissioning plans.
The Authority has re-appointed John Carnegie, Alan Eyes, and Chris Jewell (all existing members), and appointed Stephen Drew and James Collinson-Smith (both new members) to the Wholesale Advisory Group. The members’ two-year terms commence on 1 June 2015.
The Authority has re-appointed Sue Chetwin, Ewan Gebbie and Nathan Strong (all existing members) and appointed Murray Dyer (new member) to the Retail Advisory Group. The members’ two year terms commence on 1 June 2015.
Information plays an important part in building market confidence and strength.
To assist interested parties in tracking market development, the Authority publishes NZ electricity hedge contracts as a standard section of its weekly Market Brief.
