Access Arrangement for period 2025-2025 - Economic Regulation Authority
On 1 April 2025, the ERA published its final decisions on the proposed revised access arrangement for the Dampier to Bunbury Natural Gas Pipeline. The ERA did not approve DBP’s proposed changes to the access arrangement and published a revised access arrangement and access arrangement information. ERA revised Access Arrangement Final Decision
Lifespan of Australia's longest gas pipeline slashed as renewable
The Dampier to Bunbury gas pipeline is the longest in Australia. (Supplied: DBP) Energy Matrix consultant Michael Brooks, who has worked in the gas pipeline industry, said AGIG was also likely to be motivated by the commercial benefit of a shorter depreciation schedule because it would boost profits in the short term.
Public Knowledge Sharing Report
DBP-Z-REP-013-01 Page 6 of 17 3 BACKGROUND The DBNGP (Dampier to Bunbury Natural Gas Pipeline) is Western Australia’s most significant gas transmission asset and provides natural gas to regional and metropolitan WA. The DBNGP extends from Woodside’s Karratha Gas Plant, in Western Australia’s North West to Bunbury, 170km south of Perth.
Dampier to Bunbury Natural Gas Pipeline
The Dampier to Bunbury Natural Gas Pipeline (DBNGP) is the longest natural gas pipeline in Australia. It is 660mm in diameter, which also makes it one of Australia's largest in terms of transmission capacity. At the time of its commissioning in 1984, [2] it was one of the longest gas pipelines in the world. [3]
Dampier to Bunbury Natural Gas Pipeline - Department of Mines, Industry
The DBNGP is a buried pipeline that transports natural gas approximately 1,600km from the Burrup Peninsula, starting near the township of Dampier, running parallel to the west coast of Western Australia and finishing near Bunbury. Figure 1 provides an overview of the route traversed by the DBNGP.
- Who owns Dampier Bunbury Pipeline?
- * Dampier Bunbury Pipeline is the trading name of the DBNGP group of companies, ultimately owned by the consortium that purchased the Dampier to Bunbury Natural Gas Pipeline in October 2004. DBP is majority owned by DUET – Diversified Utility and Energy Trusts - with Alcoa and Alinta being minority owners.
- Should DBP adopt a pipeline design based on a gas composition?
- Kimber Consultants recommends that DBP should adopt a pipeline design that is based on a gas composition implied in the Recommended Design Gas Composition as shown in Table 4, which has a combination of the lowest expected heating value, a low Wobbe index, no LPG and modest levels of inerts.
- Who uses the DBNGP pipeline?
- The majority of the natural gas transported by the pipeline is consumed by major industrial users in the mining and minerals processing industries, but it also supplies gas to power generators and gas retailers. The DBNGP was constructed in stages between 1982 and 1985 by the State Energy Commission (SECWA).
- What happens if DBP chooses a high quality gas specification/composition?
- Conversely, if DBP chooses a high quality gas specification/composition and lower quality gas is shipped, then the pipeline’s increased capacity will be “under-designed” and DBP will not have the pipeline capacity to sell as a firm service and will incur penalties; and the incremental tariffs will not result in cost recovery – a double loss.
- What is the average gas quality in a DBNGP?
- Paradoxically, the results indicate that average gas quality will remain quite high and that there is a relatively low probability of receiving gas into the DBNGP with a heating value of around 37 – 38 MJ/m3, or with up to 7% inerts, except perhaps during some short term plant or field upset.
- What is the DBNGP corridor?
- The DBNGP corridor also includes land for various high-pressure gas pipeline laterals to service areas such as Carnarvon, Geraldton, Pinjarra, Kwinana, Waroona and Harvey.
