Western Powers’s initial Technical Rules were approved by the Economic Regulation Authority on 26 April 2007 and came into effect on 1 July 2007.
As required under the Electricity Networks Access Code 2004, the ERA undertook a review of Western Power’s technical rules. To implement the changes identified during the review, Western Power submitted proposed revisions to the technical rules to the ERA on 14 July 2011. The ERA published its review of the proposed revisions on 16 August 2011 and invited submissions. Taking account of matters raised in submissions, Western Power made some minor changes to its proposed revisions. The ERA approved the modified proposed revisions on10 November 2011 and the revised rules took effect from 23 December 2011.
The table below contains statistics that the ERA is required to publish regarding proposals to amend the Technical Rules that it receives in each financial year.
| Financial year |
Number of proposals received |
Number of proposals rejected |
Number of proposals withdrawn |
| 2022/23 |
1 |
0 |
1 |
| 2021/22 |
1 |
0 |
1 |
| 2020/21 |
0 |
0 |
0 |
Proposed revisions to the Technical Rules submitted to the ERA since December 2011 are listed below with links to the relevant documents:
