Overview of Regulatory Regime
The Australian gas industry has been deregulated. This required retailing functions to be tightly 'ringfenced' from the ownership and operation of gas distribution networks. The networks are subject to open access which allows multiple retailers to compete for customers in markets previously considered monopolies.
In November 1997, the State and Federal Governments signed the Natural Gas Pipelines Third Party Access Agreement which set out the terms and conditions under which deregulation was to occur.
Full retail contestability occurred in Victoria in October 2002, in South Australia in July 2004 and in Queensland from 1 July 2007.
Full retail contestability does not impact Envestra other than the company deals with multiple retailers in each jurisdiction rather than just one as in the past.
The tariffs (cost of transporting the gas) Envestra charges for each class of customer is determined by an Independent Pricing and Access Regulator in each State. The tariffs are linked to CPI and are set for a five year period but can be reviewed earlier if there is a significant change in circumstances affecting the return Envestra is allowed to earn on its assets. Prior to July 2008 Envestra had dealings with the following regulators when reviewing its Access Arrangements.
South Australia: Essential Services Commission of South Australia
Victoria: Essential Services Commission
Queensland: Queensland Competition Authority
From 1 July 2008, the Australian Energy Regulator (www.aer.gov.au) took over responsibility for gas regulation. The introduction of a National Regulator is viewed by Envestra as a positive move as it is likely to bring a more consistent and commercial approach to setting access tariffs.

Access Arrangements
Choose from the Access Arrangement PDF files below. To read or print these Access Arrangement documents you will require the Adobe Acrobat Reader V3.01.
South Australian Distribution Network
- South Australian Access Arrangement (PDF 942 kb)
- Access Arrangement Terms and Conditions (PDF 193 kb)
- Maps of Regions, Adelaide and Tariff Zones (PDF 416 kb)
- Map of SA Covered Network (PDF 52kb)
- Map of Gas HV Delivery Zones (.doc 186kb)
- Postcodes for Gas HV Delivery Zones (.xls 53kb)
- SA Tariff Zones by Postcode (PDF 17kb)
Queensland Distribution Network
- Access Arrangement amended 19 June 2009 (PDF 620 kb)
- Access Arrangement variation re Dinmore 19 June 2009 (PDF 37 kb)
- Map of Brisbane reticulated area (Version 2 - MS Word 534 kb)
- Map of Queensland Regions (MS Powerpoint .ppt 128 kb)
- Terms and Conditions (PDF 365 kb)
Albury Distribution Network
- Map of Albury Distribution System (PDF 43 kb)
- Access Arrangement for the Albury Distribution System Part A (PDF 108 kb)
- Access Arrangement for the Albury Distribution System Part B (PDF 198 kb)
- Terms and Conditions (PDF 152 kb)
Victorian Distribution Network
- Map of Network (a) Melbourne and Gippsland (MS Word .doc 1.37 Mb)
- Map of Network (b) Northern Victoria (MS Word .doc 724 kb)
- Access Arrangement for Victorian Distribution System PART A (PDF 108 kb)
- Access Arrangement for Victorian Distribution System PART B (PDF 204 kb)
- Terms and Conditions (PDF 152 kb)
You will need Adobe Acrobat Reader to view these files.
The reader can be downloaded for free from Adobe.






