2018 Gas Rate of Return Instrument

Rate of Return Guidelines

The Rate of Return Guidelines was published following a review in 2018.

Date Documents File type
18-Dec-18 Rate of Return Guidelines 2018
 Adobe PDF 726 kB

Explanatory Statement

The Explanatory Statement for the Rate of Return Guidelines 2018 was published following a review in 2018.

Date Documents File type
18-Dec-18 Explanatory Statement for the Rate of Return Guidelines 2018
 Adobe PDF 3.7 MB

Addendum to Explanatory Statement

In 2020, the ERA amended its method for estimating the debt risk premium to account for changes in product packages provided by its financial data provider.

Date  Documents File type
6-Oct-20 Updating DRP using R (version 3)
 Adobe PDF 1.15 MB
6-Oct-20
 Updating DRP using Excel (version 3)
 Adobe PDF 1.08 MB
6-Oct-20
 DRP Methods (version 3)
 ZIP 654 kB
Page last updated: 12 Dec 2022

The ERA is Western Australia's independent economic regulator. We aim to ensure the delivery of water, electricity, gas and rail services in Western Australia is in the long-term interest of consumers.

Acknowledgement of Country

The Economic Regulation Authority acknowledges the traditional custodians throughout Western Australia and their continuing connection to the land, waters and community. We pay our respects to all members of the Aboriginal communities and their cultures; and to Elders past, present and emerging.

Have your say

We would like your feedback to improve our website.

Leave your feedback
Keep up to date
Find us on LinkedIn