Constraint Issues Group (inactive)

On 13 May 2004 the Electricity Commission announced its decision regarding the Undesirable Trading Situation (UTS) for certain nodes in the Tauranga region for trading period 36 on 24 April 2004.

The Commission sought submissions on its decision. TrustPower, and most other submitters, raised more general matters regarding the modelling and frequency of constraints within SPD. The Commission considered that these issues did not constitute a UTS but were worthy of further consideration. This was discussed at a recent CEO’s forum and the Commission agreed to establish a group (subsequently named the Constraint Issues Group) to analyse and clearly define the issues and provide recommendations to the Commission.

The Commission would like to highlight that the group will have specific objectives and is expected to conclude its work within two months.

• CIG Terms of Reference [PDF, 26K]
• Letter to CIG Members [PDF, 224K]
• Final Issues papers
  • Issues paper concerning extreme pricing effects seen under system constraints [PDF, 623KB] Amended 4 November 2004
    • Appendix One [PDF, 19KB]
  • Bay of Plenty reduced SPD model [PDF, 80KB]
  • Spring washer paper [PDF, 90KB]
• Meetings
  • Papers for meeting on 20 July 2004
  • Papers for meeting on 14 June 2004