Conforming and non-conforming GXPs
Usually a grid exit point that has a predictable demand pattern is considered to be a 'conforming' GXP while a GXP that does not follow a predictable pattern is considered to be a 'non-conforming' GXP. From 28 June 2012, a purchaser who trades at a non-conforming GXP is required to submit nominated bids, while a purchaser who trades at a conforming GXPs may elect whether to submit a difference bid.
List of conforming and non-conforming GXPs
Clause 13.27G of the Code requires the Authority to publicise and maintain a list of all non-conforming and conforming GXPs, including:
(a) the mean demand (in MW) for each GXP calculated in accordance with clause 1(b) of Schedule 17.7 of the Code; and
(b) if the mean demand for a GXP is 10 MW or more, the unpredictability measure for the GXP calculated in accordance with clause 1(c) of Schedule 13.7 of the Code.
This information is provided below.
Criteria for departing from the methodology
Under clause 13.27C(2), the Authority must make a determination in accordance with the methodology set out in Schedule 13.7 of the Code, unless:
(a) the Authority has applied the methodology; and
(b) according to the methodology, the GXP is a conforming GXP; and
(c) the Authority considers that the GXPs should be treated as a non-conforming GXP; and
(d) the Authority has publicised criteria under clause 13.27E of the Code; and
(e) making a determination that the GXP is a non-conforming GXP is in accordance with the criteria.
If paragraphs 2(a) to 2(e) apply, the Authority may make a determination in accordance with the criteria (clause 13.27C(3)).
The Authority must consult with participants before publicising the criteria or amending the publicised criteria (clause 13.27E(2) of the Code).
The Authority has completed a consultation on the criteria and these are published below.
Process for requesting the Authority to reconsider a determination
List-of-non-conforming-and-conforming-GXPs.pdf | pdf | 267 KB | Last Changed: 23/11/2012 10:21am
Criteria-for-non-conforming-GXPs.pdf | pdf | 23 KB | Last Changed: 14/05/2012 3:00pm