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Gas Industry Co monitors performance measures and reports on them on a regular basis. The purpose of these measures is to track the performance of the Gas (Switching Arrangements) Rules 2008 (the Switching Rules), the Gas (Downstream Reconciliation) Rules 2009 (the Reconciliation Rules), and the Gas Governance (Critical Contingency Management) Regulations 2008 (CCM Regulations), both in terms of activity related to these statutes and the competitive outcomes that they foster. The Report also tracks transmission balancing actions, as a means of informing Gas Industry Co's work on this issue.

The latest Performance Measures Quarterly Report can be found below while all previous Reports can be found in Background.

Highlights of the June 2017 Report:
  • About 4,100 gas consumers switch gas supplier each month; about 18 percent of gas customers switch supplier each year.
  • So far in 2017, 76 percent of customer switches have been completed within three business days.
  • 63 percent of residential consumer sites have switched retailer at least once in the past eight years; 66 percent of small commercial and 79 percent of large commercial sites have switched at least once. 
  • Over 99 percent of gas customers are connected to a gate where seven or more retailers trade, suggesting that the gas retail sector is generally competitive throughout the North Island.
  • Average annual unaccounted-for gas (UFG) over the past year stands at about 0.8 percent (compared with about 2 percent in 2009).
  • Genesis is the largest retailer by customer share. Nova has the largest share of commercial and industrial customers.
  • Nova, Genesis, and Vector Gas are the largest retailer by volume market share. 


Page last saved: August 30, 2017
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P 04 472 1800
A Gas Industry Co
Level 8, The Todd Building
95 Customhouse Quay
PO Box 10-646
Wellington 6143

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