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Access Arrangement 2022-2027

The ERA published an issues paper on 4 March 2022. Submissions received on the issues paper are available below.

An online public forum was held on 25 March 2022. The slides presented at the forum and a transcript are available below.

Western Power submitted further access arrangement information on 19 May 2022.

Western Power submitted additional tariff structure and reference services information on 1 July 2022. Submissions received on the additional information are available below.

The ERA published its draft decision on 9 September 2022.

A public forum on the ERA’s draft decision was held on 27 September 2022. The slides presented at the forum and a transcript are available below.

Western Power submitted a revised proposal on 15 November 2022.

Submissions received on the draft decision and Western Power's revised proposal are available below.

Western Power submitted further access arrangement information on its revised proposal on 18 January 2023.

The ERA published its final decision on 31 March 2023.

During the AA5 period, the ERA is monitoring Western Power’s progress against the requirements of the access arrangement and publishing an annual progress report.  The annual reports are available below.

Annual progress reports

Date Documents File type
05-Jul-24 First annual progress report Adobe PDF 873 kB

Clean version of Final Decision Approved Access Arrangement and Access Arrangement supporting information

Date  Documents File type
03-Nov-23 Approved Access Arrangement Adobe PDF 788 kB
03-Nov-23 Appendix A – Electricity Transfer Access Contract Adobe PDF 1.2 MB
03-Nov-23 Appendix B – Applications and Queuing Policy Adobe PDF 1 MB
03-Nov-23 Appendix C.1 – Contributions Policy Adobe PDF 414 kB
03-Nov-23 Appendix C.2 – Distribution Low Voltage Connection Scheme Adobe PDF 292 kB
03-Nov-23 Appendix D – Multi-Function Asset Policy Adobe PDF 536 kB
03-Nov-23 Appendix E – Reference Services Adobe PDF 1.0 MB
03-Nov-23 Appendix F.1 – Reference Tariff Change Forecast Adobe PDF 377 kB
03-Nov-23 Appendix F.2 – Tariff Structure Statement Adobe PDF 1.2 MB

Final Decision

Date  Documents File type
31-Mar-23 Final Decision Overview
Adobe PDF 31 kB
31-Mar-23 Attachment 1 - Price Control and Target Revenue
Adobe PDF 394 kB
31-Mar-23
Attachment 2 - Regulated Asset Base
Adobe PDF 261 kB
31-Mar-23
Attachment 3A - AA4 Capital Expenditure
Adobe PDF 261 kB
31-Mar-23
Attachment 3B - AA5 Capital Expenditure
Adobe PDF 490 kB
31-Mar-23
Attachment 4 - Depreciation
Adobe PDF 440 kB
31-Mar-23
Attachment 5 - Return on Regulated Asset Base
Adobe PDF 441 kB
31-Mar-23
Attachment 6 - Operating Expenditure
Adobe PDF 441 kB
31-Mar-23
Attachment 7 - Other Components of Target Revenue
Adobe PDF 126 kB
31-Mar-23
Attachment 8 - Services
Adobe PDF 362 kB
31-Mar-23
Attachment 9 - Service Standard Benchmarks and Adjustment Mechanism
Adobe PDF 2.1 MB
31-Mar-23 Attachment 10 - Expenditure Incentives and Other Adjustment Mechanisms
Adobe PDF 2.1 MB
31-Mar-23 Attachment 11 - Network Tariffs
Adobe PDF 83 kB
31-Mar-23 Attachment 12 - Policies and Contracts Adobe PDF 678 kB
31-Mar-23 Target Revenue Model Microsoft Excel 16 kB
31-Mar-23 Consultant Report - Engevity - Western Power AA5 Expenditure Revised Proposal Review – Supplementary Report Adobe PDF 678 kB

Final Decision Approved Access Arrangement and Access Arrangement supporting information (Appendix 4)

Date  Documents File type
31-Mar-23 Approved Access Arrangement - Track Changes
Adobe PDF 31 kB
31-Mar-23 Appendix A - Electricity Transfer Access Contract
Adobe PDF 394 kB
31-Mar-23
Appendix B - Applications and Queuing Policy - Track Changes
Adobe PDF 261 kB
31-Mar-23
Appendix C.1 - Contributions Policy
Adobe PDF 261 kB
31-Mar-23
Appendix C.2 - Distribution Low Voltage Connection Scheme
Adobe PDF 490 kB
31-Mar-23
Appendix D - Multi-Function Asset Policy
Adobe PDF 440 kB
31-Mar-23
Appendix E - Reference Services - Track Changes
Adobe PDF 441 kB
31-Mar-23
Appendix F.1 - Reference Tariff Change Forecast
Adobe PDF 441 kB
31-Mar-23
Appendix F.2 - Tariff Structure Statement - Track Changes
Adobe PDF 441 kB

Further Access Arrangement information provided by Western Power on its revised proposal

Date  Documents File type
19-Jan-23
Further Access Arrangement information on revised proposal
Adobe PDF 1 MB
19-Jan-23
Revised regulatory revenue model
Microsoft Excel 1.5 MB

Public submissions on draft decision and Western Power's revised proposal

Date  Documents File type
19-Jan-23 Energy Policy WA
Adobe PDF 31 kB
19-Jan-23 WA Local Government Association
Adobe PDF 394 kB
19-Dec-22
Alinta Energy
Adobe PDF 261 kB
19-Dec-22
Australian Energy Council
Adobe PDF 261 kB
19-Dec-22
Change Energy
Adobe PDF 490 kB
19-Dec-22
Collgar Renewables
Adobe PDF 440 kB
19-Dec-22
Evie Submission 1
Adobe PDF 441 kB
19-Dec-22
Evie Submission 2
Adobe PDF 441 kB
19-Dec-22
Perth Energy
Adobe PDF 126 kB
19-Dec-22
Synergy Submission 1
Adobe PDF 362 kB
19-Dec-22
Synergy Submission 2
Adobe PDF 2.1 MB
19-Dec-22 Synergy Submission 2 Attachment
Microsoft Excel 16 kB
19-Dec-22 WA Expert Consumer Panel
Adobe PDF 83 kB
19-Dec-22 WA Expert Consumer Panel Attachment A Adobe PDF 678 kB
19-Dec-22 WA Expert Consumer Panel Attachment B Adobe PDF 3.8 MB

Revised Proposed Access Arrangement and Access Arrangement information

Date  Documents File type
15-Nov-22
Chair's Letter
Adobe PDF 310 kB
15-Nov-22
Submission Letter
Adobe PDF 335 kB
15-Nov-22
Access Arrangement Information for Revised AA5 Proposal
Adobe PDF 1.8 MB
15-Nov-22
Revised Proposed revisions to the Access Arrangement and Appendices - Clean
Adobe PDF 8.5 MB

Revised Proposed Access Arrangement supporting information

Date  Documents File type
15-Nov-22
Appendix A - Electricity Transfer Access Contract - Track Changes
Adobe PDF 1.4 MB
15-Nov-22
Appendix B - Applications and Queuing Policy - Track Changes
Adobe PDF 1.1 MB
15-Nov-22
Appendix C.1 - Contributions Policy - Track Changes
Adobe PDF 526 kB
15-Nov-22
Appendix C.2 - Distribution Low Voltage Connection Scheme - Track Changes
Adobe PDF 443 kB
15-Nov-22
Appendix D - Multi-Function Asset Policy - Track Changes
Adobe PDF 757 kB
15-Nov-22
Appendix E - Reference Services - Track Changes
Adobe PDF 1.1 MB
15-Nov-22
Appendix F.1 - Tariff Structure Statement - Overview
Adobe PDF 2.0 MB
15-Nov-22 Appendix F.2 - Tariff Structure Statement - Technical Summary
Adobe PDF 1.7 MB
15-Nov-22 Appendix F.3 - 2022-23 Price List - Track Changes
Adobe PDF 1.0 MB
15-Nov-22 Revised Proposed revisions to the Access Arrangement - Track Changes
Adobe PDF 1.1 MB

Revised Proposed Access Arrangement Information - Attachments

Date  Documents File type
15-Nov-22
AAI - Attachment 1.0 - Access Arrangement Information Document Index
Adobe PDF 324 kB
15-Nov-22
AAI - Attachment 1.1 - Revised AA5 Regulatory Revenue Model
Microsoft Excel 1.5 MB
15-Nov-22
AAI - Attachment 1.2 - Energy and Customer Numbers Forecast Methodology (2022)
Adobe PDF 1.9 MB
15-Nov-22
AAI - Attachment 1.3 - Energy and Customer Number Forecast Report (2022)
Adobe PDF 951 kB
15-Nov-22
AAI - Attachment 1.4 - Proforma Forecast Statements
Adobe PDF 732 kB
15-Nov-22
AAI - Attachment 6.1 - Cost Escalation Forecasts for Western Power’s Access Arrangement 5
Adobe PDF 690 kB
15-Nov-22
AAI - Attachment 9.1 - Community & Customer Engagement Program (CEP) Report
Adobe PDF 2.5 MB
15-Nov-22 AAI - Attachment 11.1 - Indicative 2023-24 Price Tables
Adobe PDF 762 kB
15-Nov-22 AAI - Attachment 12.1 - Multi-Function Asset Policy Explanatory Statement - Track changes
Adobe PDF 614 kB
15-Nov-22 AAI - Attachment 12.1 - Multi-Function Asset Policy Explanatory Statement
Adobe PDF 551 kB

Public Forum 27 September 2022

Date  Documents File type
04-Nov-22
Slides
Adobe PDF 1.5 MB
04-Nov-22 Transcript
Adobe PDF 1.4 MB

Draft Decision

Date  Documents File type
09-Sep-22
Draft Decision Overview
Adobe PDF 891 kB
09-Sep-22 Attachment 1 - Price Control and Target Revenue
Adobe PDF 425 kB
09-Sep-22 Attachment 2 - Regulated Asset Base
Adobe PDF 346 kB
09-Sep-22 Attachment 3A - AA4 Capital Expenditure
Adobe PDF 342 kB
09-Sep-22 Attachment 3B - AA5 Capital Expenditure
Adobe PDF 640 kB
09-Sep-22 Attachment 4 - Depreciation
Adobe PDF 322 kB
09-Sep-22
Attachment 5 - Return on Regulated Asset Base
Adobe PDF 950 kB
09-Sep-22 Attachment 6 - Operating Expenditure
Adobe PDF 532 kB
09-Sep-22
Attachment 7 - Other Components of Target Revenue
Adobe PDF 507 kB
09-Sep-22
Attachment 8 - Services
Adobe PDF 473 kB
09-Sep-22
Attachment 9 - Service Standard Benchmarks and Adjustment Mechanism
Adobe PDF 477 kB
09-Sep-22
Attachment 10 - Expenditure Incentives and Other Adjustment Mechanisms
Adobe PDF 353 kB
09-Sep-22
Attachment 11 - Network Tariffs
Adobe PDF 440 kB
09-Sep-22
Attachment 12 - Policies and Contracts
Adobe PDF 563 kB
09-Sep-22
Target Revenue Model
Microsoft Excel 1.6 MB
09-Sep-22
Consultant Report - Engevity - Western Power AA5 Expenditure Proposal Review - Executive Summary
Adobe PDF 1 MB
09-Sep-22
Consultant Report - Engevity - Western Power AA5 Expenditure Proposal Review - Attachments
Adobe PDF 6.9 MB

Public submissions on additional tariff structure and reference services information

Date  Documents File type
28-Jul-22
Australian Energy Council
Adobe PDF 207 kB
28-Jul-22 Collgar Wind Farm
Adobe PDF 87 kB
28-Jul-22 Electric Vehicle Council
Adobe PDF 171 kB
28-Jul-22 Evie
Adobe PDF 560 kB
28-Jul-22 Noel Schubert
Adobe PDF 913 kB
28-Jul-22 Synergy
Adobe PDF 550 kB
28-Jul-22
WA Council of Social Service
Adobe PDF 219 kB
28-Jul-22 WA Expert Consumer Panel
Adobe PDF 48 kB

Additional Tariff Structure and Reference Services Information

Further Access Arrangement information

Date Documents File type
20-May-22 Further Access Arrangement information
Adobe PDF 437 kB

Public submissions on issues paper

Public Forum 25 March 2022

Date Documents File type
12-Apr-22 Written response to question
Adobe PDF 54 kB

04-Apr-22 Slides
Adobe PDF 5 MB

04-Apr-22 Transcript
Adobe PDF 309 kB

Issues Paper

Date Documents File type
04-Mar-22 Issues paper
Adobe PDF 2 MB

Proposed Access Arrangement and Access Arrangement information

Proposed Access Arrangement Information - Attachments

Date Documents File type
01-Feb-22 AAI - Attachment 1.1 - Access Arrangement Information Document Index
Adobe PDF 340 kB

01-Feb-22 AAI - Attachment 1.3 - Regulatory Financial Statements for the year ending 30 June 2018
Adobe PDF 2 MB

01-Feb-22 AAI - Attachment 1.4 - Regulatory Financial Statements for the year ending 30 June 2019
Adobe PDF 2 MB

01-Feb-22 AAI - Attachment 1.5 - Regulatory Financial Statements for the year ending 30 June 2020
Adobe PDF 925 kB

01-Feb-22 AAI - Attachment 1.6 - Regulatory Financial Statements for the year ending 30 June 2021
Adobe PDF 707 kB

01-Feb-22 AAI - Attachment 1.7 - Proforma Forecast Statements
Adobe PDF 782 kB

01-Feb-22 AAI - Attachment 10.1 - Considerations for the regulatory rate of return allowance
Adobe PDF 2 MB

01-Feb-22 AAI - Attachment 11.1 - AA5 Regulatory Revenue Model
Microsoft Excel 2 MB

01-Feb-22 AAI - Attachment 13.1 - Model Electricity Transfer Access Contract (ETAC) Change Summary
Adobe PDF 309 kB

01-Feb-22 AAI - Attachment 13.2 - Applications and Queuing Policy Change Summary
Adobe PDF 367 kB

01-Feb-22 AAI - Attachment 13.3 - Contributions Policy Change Summary
Adobe PDF 243 kB

01-Feb-22 AAI - Attachment 13.4 - Distribution Low Voltage Connection Scheme Change Summary
Adobe PDF 323 kB

01-Feb-22 AAI - Attachment 13.5 - Multi-Function Asset Policy Explanatory Statement
Adobe PDF 606 kB

01-Feb-22 AAI - Attachment 4.1 - Community & Customer Engagement Program Report
Adobe PDF 6 MB

01-Feb-22 AAI - Attachment 5.1 - AA4 Capital Expenditure Report
Adobe PDF 890 kB

01-Feb-22 AAI - Attachment 6.1 - Reference Services - Change Summary
Adobe PDF 852 kB

01-Feb-22 AAI - Attachment 6.2 - Fitting Distributions for AA5 Service Standard Benchmarks
Adobe PDF 1 MB

01-Feb-22 AAI - Attachment 6.3 - Estimation of value of customer reliability for Western Power's network
Adobe PDF 12 MB

01-Feb-22 AAI - Attachment 7.2 - Cost and Revenue Allocation Method (CRAM) 2020-21
Adobe PDF 1 MB

01-Feb-22 AAI - Attachment 7.3 - Forecast Cost Escalators for Western Power's 2022-27 regulatory period
Adobe PDF 1 MB

01-Feb-22 AAI - Attachment 7.4 - Network Growth Factors Review for Western Power Report
Adobe PDF 2 MB

01-Feb-22 AAI - Attachment 7.5 - Energy and Customer Number Forecast Report (2020)
Adobe PDF 2 MB

01-Feb-22 AAI - Attachment 7.6 - Energy and Customer Forecast Methodology
Adobe PDF 2 MB

01-Feb-22 AAI - Attachment 7.7 - Report on Western Power's Forecasting Methodology
Adobe PDF 2 MB

01-Feb-22 AAI - Attachment 8.1 - AA5 Forecast Capital Expenditure Report
Adobe PDF 2 MB

Page last updated: 05 Jul 2024