No. 115, 2007
1. This notice of a recommendation and assessment concerning the Electricity Governance Rules 2003 (“Rules”), Rule Amendment Proposal No. 115, is issued by the Electricity Commission (“Commission”), pursuant to section 172E(2)(c) of the Electricity Act 1992 (“Act”).
2. Section 172E(2)(c) of the Act provides that, no later than 10 working days after making a recommendation concerning the Rules to the Minister of Energy, the Commission must publicise the recommendation and the assessment completed under section 172F of the Act.
Recommendation
3. On 20 September 2007, the Commission recommended the existing Schedule C5 of Part C of the Rules, which contains the system operator procurement plan, be replaced in its entirety with a new Schedule C5.
Recommended Amendment to the Rules
4. The key differences between the existing Schedule C5 and the one now recommended by the Commission are:
(a) clarification of assessment methodology and quantity requirements;
(b) expanded definition of the requirements for making a frequency-keeping offer;
(c) description of the method for selecting frequency keepers for each trading period;
(d) a requirement for the system operator to review its dispatch when a frequency keeper advises it cannot maintain frequency or time error to the standards required;
(e) provision for the system operator to procure frequency-keeping from a generator in an area temporarily cut off from the rest of the grid;
(f) outline of the method the system operator will use to assess the performance of generators providing fast instantaneous reserve; and
(g) provision for the ancillary service agent to provide an error range for the data supplied to the system operator in support of any assessment of ancillary service performance requirements.
5. A copy of the Commission’s recommendation and assessment is available, at no cost, on the Commission’s website
http://www.electricitycommission.govt.nz/rulesandregs/
recommend
Dated at Wellington this 20th day of September 2007.
For and on behalf of the Electricity Commission:
PETER HARRIS, Deputy Chair.