Access Arrangement 2017-2022

The proposed access arrangement for Western Power's electricity network for the period 2017-2022 was lodged on 2 October 2017.

Public Consultation on Western Power’s proposal and an ERA issues paper closed on 11 December 2017. Public submissions received are published below.

The ERA’s Draft Decision on Western Power’s proposal was published on 2 May 2018. Western Power’s response to the ERA’s Draft Decision and public submissions received are published below.

On 20 September 2018 the ERA published its final decision.

On 16 November 2018, Western Power submitted an amended proposed access arrangement with supporting documentation in response to the final decision. These documents are published below.

On 2 January 2019 the ERA published its further final decision, which did not approve Western Power's amended proposed access arrangement.

On 28 February 2019 the ERA published its access arrangement decision and associated access arrangement documents.

On 10 May 2019 the ERA published a corrigenda to its access arrangement.

The ERA’s revised access arrangement and price list came into effect on 1 July 2019.

On 10 June 2020, the ERA approved some minor amendments to correct errors in the price control formula in clauses 5.11.3 and 6.5.13 of the access arrangement.

ERA Approved Access Arrangement with minor amendments to clauses 5.11.3 and 6.5.13

Date	Documents	File type
15-Jun-20	ERA Approved Access Arrangement with minor amendments to clauses 5.11.3 and 6.5.13	657 kB

Access Arrangement

Date	Documents	File type
10-May-19	ERA Approved Access Arrangement	12 MB
10-May-19	ERA Approved - Appendix A - Electricity Transfer Access Contract	1.9 MB
10-May-19	ERA Approved - Appendix B - Applications and Queuing Policy	1.5 MB
10-May-19	ERA Approved - Appendix C.1 - Contributions Policy	830 kB
10-May-19	ERA Approved - Appendix C.2 - Distribution Low Voltage Connection Scheme	752 kB
10-May-19	ERA Approved - Appendix D - Transfer and Relocation Policy	777 kB
10-May-19	ERA Approved - Appendix E - Reference Services	1.3 MB
10-May-19	ERA Approved - Appendix F.1 - 2017-18 Price List	1.1 MB
10-May-19	ERA Approved - Appendix F.2 - 2017-18 Price List Information	584 kB
10-May-19	ERA Approved - Appendix F.3 - 2018-19 Price List	1.1 MB
10-May-19	ERA Approved - Appendix F.4 - 2018-19 Price List Information	585 kB
10-May-19	ERA Approved - Appendix F.5 - 2019-20 Price List	1 MB
10-May-19	ERA Approved - Appendix F.6 - 2019-20 Price List Information	2.5 MB

Access Arrangement Corrigenda supporting information

Date	Documents	File type
10-May-19	List of Corrections	143 kB
10-May-19	ERA Approved - Appendix B - Applications and Queuing Policy - Track changes	1.5 MB
10-May-19	ERA Approved - Appendix C.1 - Contributions Policy - Track changes	830 kB
10-May-19	ERA Approved - Appendix E - Reference Services - Track changes	1.3 MB
10-May-19	ERA Approved - Appendix F.5 - 2019-20 Price List -Track changes	1 MB
10-May-19	ERA Approved - Appendix F.6 - 2019-20 Price List Information - Track changes	2.5 MB

Final decision

Date	Documents	File type
20-Sep-18	Final Decision	8.1 MB
20-Sep-18	Final Decision Appendix 4 - Revenue Model Target Revenue Calculation	814 kB
20-Sep-18	Final Decision Appendix 5 - Return on Regulated Capital Base	2.1 MB
20-Sep-18	Final Decision Appendix 6 - GHD consultant report - review revised AA4 capital expenditure proposal	1.7 MB
20-Sep-18	Final Decision Appendix 7 - Geoff Brown and Assoc consultant report - review proposed AA4 expenditure on Picton-Busselton 132kV line	261kB
20-Sep-18	Consultant report - Pink Lake Analytics - Evaluation of the method to calculate service standard benchmarks and targets	749 kB
20-Sep-18	Consultant report - Dr Martin Lally of Capital Financial Consultants Ltd - Review of Frontiers Gamma Submissions	155 kB
11-Oct-18	Consultant report - Geoff Brown and Associates - Review of Mr Stephen Davidsons submissions on AA4 Draft Decision	355 kB
11-Oct-18	Consultant report - Geoff Brown and Associates - Transmission service standard benchmarks regulatory framework	182 kB

New information on rate of return

Date	Documents	File type
17-Aug-18	Review of Gamma Chapter and Submissions - Dr Martin Lally	749 kB
17-Aug-18	Notice - Proposed revisions to the Western Power network access arrangement - New rate of return information to be considered	155 kB
17-Aug-18	Public Submission - WA Major Energy Users (WAMEU)	27.9 kB
17-Aug-18	Public Submission - ATCO Australia	2.7 MB
17-Aug-18	Public Submission - Western Power	482 kB

Revised Proposed Access Arrangement and Access Arrangement Information

Date	Documents	File type
15-Jun-18	Covering letter for the revised proposed Access Arrangement for AA4	3.4 MB
15-Jun-18	Revised proposed Access Arrangement Contract and Appendices	12 MB
15-Jun-18	Access Arrangement Contract – Track Changes	784 kB
15-Jun-18	Revised Proposed Access Arrangement Information for AA4	4.1 MB

Revised Proposed Access Arrangement supporting information

Date	Documents	File type
15-Jun-18	Revised - Appendix A - Electricity Transfer Access Contract - Track Changes	998 kB
15-Jun-18	Revised - Appendix B - Applications and Queuing Policy - Track Changes	1 MB
15-Jun-18	Revised - Appendix C.1 - Contributions Policy - Track Changes	1.3 MB
15-Jun-18	Revised - Appendix C.2 - Distribution Low Voltage Connection Scheme - Track Changes	1 MB
15-Jun-18	Revised - Appendix D - Transfer and Relocation Policy - Track Changes	1.1 MB
15-Jun-18	Revised - Appendix E - Reference Services	1 MB
15-Jun-18	Revised - Appendix F.1 - 2017-2018 Price List	1.2 MB
15-Jun-18	Revised - Appendix F.2 - 2017-2018 Price List Information	2.19 kB
15-Jun-18	Revised - Appendix F.3 - 2018-2019 Price List	1.2 MB
15-Jun-18	Revised - Appendix F.4 - 2018-2019 Price List Information	2.6 MB

Revised Proposed Access Arrangement Information supporting information

Date	Documents	File type
15-Jun-18	Revised AAI – Pro forma – Forecast statements	212 kB
15-Jun-18	Revised AAI – Attachment 1.1 – Document Index	767 kB
15-Jun-18	Revised AAI – Attachment 3.1 – AA4 Regulatory Revenue Model – Summary Output	1.6 MB
15-Jun-18	Revised AAI – Attachment 3.2 – AA4 Regulatory Revenue Model – Public Version	1.1 MB
15-Jun-18	Revised AAI – Attachment 4.1 – ACIL Allen Consulting Report on Operating Expenditure Methodology	844 kB
15-Jun-18	Revised AAI – Attachment 4.2 – Synergies Consulting Report with updated Wage Price Index (WPI) forecasts for AA4 regulatory period	904 kB
15-Jun-18	Revised AAI – Attachment 6.2 – Advanced Metering Infrastructure (AMI) revised information (public)	538 kB
15-Jun-18	Revised AAI – Attachment 13.1 – ADS Expert Report on methodology for setting the service standard benchmarks and targets	1.9 MB
15-Jun-18	Revised AAI – Attachment 14.1 – ACIL Allen Consulting Expert Report on Service Standards Adjustment Mechanism	863 kB

Public Submissions received in response to ERA Draft Decision

Date	Documents	File type
21-Jun-18	Power Ledger Pty Ltd	665 kB
15-Jun-18	ATCO Australia	16 MB
15-Jun-18	AEMO	697 kB
15-Jun-18	Australian Energy Council	422 kB
15-Jun-18	Department of Treasury - Public Utilities Office	4.1 MB
15-Jun-18	Energy Networks Australia	99 kB
15-Jun-18	Horizon Power	456 kB
15-Jun-18	Moore River Company	2.2 MB
15-Jun-18	Mr Stephen Davidson submission 1	1.7 MB
15-Jun-18	Mr Stephen Davidson submission 2	1.7 MB
15-Jun-18	Mr Stephen Davidson submission 3	1.6 MB
15-Jun-18	Mr Stephen Davidson submission 4	1.7 MB
15-Jun-18	Mr Stephen Davidson submission 5	1.7 MB
15-Jun-18	Mr Stephen Davidson submission 6	1.7 MB
15-Jun-18	Perth Energy	837 kB
15-Jun-18	Summit Southern Cross Power Holdings Pty Ltd (SSCPH)	149 kB
15-Jun-18	Synergy	1 MB
15-Jun-18	Urban Development Institute of Australia	289 kB
15-Jun-18	Vector Limited	354 kB
15-Jun-18	WA Local Government Association (WALGA)	501 kB
15-Jun-18	WA Major Energy Users (WAMEU) – Cover Letter	27 kB
15-Jun-18	WA Major Energy Users (WAMEU)	767 kB

ERA Draft Decision

Date	Documents	File type
02-May-18	Draft Decision	5.7 MB
02-May-18	Draft Decision Appendix 4 – Revenue Model	801 kB
02-May-18	Draft Decision Appendix 5 – Rate of Return	1.6 MB
04-May-18	Draft Decision Appendix 6 – Consultant Report  Review of Western Power Proposed AA4 Access Arrangement by GHD Advisory	5 MB
04-May-18	Draft Decision Appendix 7 – Consultant Report Review of Western Power's Capital Expenditure by Geoff Brown and Associates	834 kB
02-May-18	Pink Lake Analytics – Estimation of the Market Risk Premium	574 kB
02-May-18	Western Power letter to ERA – Time of use network tariffs and Tariff Equalisation Contribution	1.3 MB

Public submissions received in response to Western Power proposal and ERA Issues paper

Date	Documents	File type
22-Dec-17	Mid West Development Commission	1.8 MB
14-Dec-17	AGL	630 kB
14-Dec-17	Alinta Energy	436 kB
14-Dec-17	ATCO Australia	3.4 MB
14-Dec-17	Australian Energy Council	372 kB
14-Dec-17	Australian Energy Market Operator	6 MB
14-Dec-17	Bluewaters	567 kB
14-Dec-17	Carnegie Clean Energy	181 kB
14-Dec-17	CdL Advisory	656 kB
14-Dec-17	CEO, Shire of Northampton	310 kB
14-Dec-17	Change Energy	367 kB
14-Dec-17	Community Electricity	116 kB
14-Dec-17	Emergent Energy	238 kB
14-Dec-17	Energy Networks Australia	98 kB
14-Dec-17	Kalbarri Development Association	982 kB
14-Dec-17	Kleenheat	2.5 MB
14-Dec-17	Mr Craig, Hosking	4.5 MB
14-Dec-17	Mr Craig, Hosking - supporting submission	439 kB
14-Dec-17	Mr Errol, Haskell	7 kB
14-Dec-17	Mr John, Laverack	303 kB
14-Dec-17	Mr Noel, Schubert	913 kB
14-Dec-17	Ms Peta, Crogan	324 kB
14-Dec-17	Mr Stephen, Davidson - Submission 1	2.8 MB
14-Dec-17	Mr Stephen, Davidson - Submission 2	984 kB
14-Dec-17	Mr Stephen, Davidson - Submission 3	714 kB
14-Dec-17	Mr Stephen, Davidson - Submission 4	547 kB
14-Dec-17	Mr Stephen, Davidson - Submission 5	530 kB
14-Dec-17	Mr Stewart, Smith	317 kB
18-Dec-17	Ms Margaret, Taylor	5 kB
14-Dec-17	NewGen Neerabup Partnership	5 MB
14-Dec-17	Newgen Power Kwinana	361 kB
14-Dec-17	Perth Energy	860 kB
14-Dec-17	RAC	165 kB
14-Dec-17	Synergy - Submission 1 - TaRP	764 kB
14-Dec-17	Synergy - Submission 2 - Standard ETAC	851 kB
14-Dec-17	Synergy - Submission 3 - AQP	1 MB
14-Dec-17	Synergy - Submission 4 - Required reference services	1.3 MB
14-Dec-17	Synergy - Submission 5 - Price Control	1.6 MB
14-Dec-17	Vector Ltd	370 kB
14-Dec-17	WACOSS	493 kB
18-Dec-17	WACOSS addendum	499 kB
14-Dec-17	WALGA	594 kB

Issues Paper

Date	Documents	File type
14-Nov-17	Issues Paper	1.7 MB

Proposed Access Arrangement and Access Arrangement Information

Date	Documents	File type
06-Oct-17	Submission Letter	550 kB
06-Oct-17	Access Arrangement and Appendices	9 MB
06-Oct-17	Proposed revisions to Access Arrangement - Track Changes	1.6 MB
06-Oct-17	Access Arrangement Information for the AA4 Period	9 MB

Proposed Access Arrangement supporting information

Date	Documents	File type
06-Oct-17	Appendix A - Electricity Transfer Access Contract - Track Changes	1.4 MB
06-Oct-17	Appendix B - Applications and Queuing Policy - Track Changes	1.7 MB
06-Oct-17	Appendix C.1 - Contributions Policy - Track Changes	977 kB
06-Oct-17	Appendix C.2 - Distribution Low Voltage Connection Scheme Unit Rate Methodology - Track Changes	591 kB
06-Oct-17	Appendix D - Transfer and Relocation Policy - Track Changes	665 kB
06-Oct-17	Appendix E - Reference Services - Track Changes	1 MB
06-Oct-17	Appendix F.1 - 2017-2018 Price List	1 MB
06-Oct-17	Appendix F.2 - 2017-2018 Price List Information	442 kB
06-Oct-17	Appendix F.3 - 2018-2019 Price List	1.1 MB
06-Oct-17	Appendix F.4 - 2018-2019 Price List Information	2.4 kB

Proposed Access Arrangement information supporting information

Date	Documents	File type
02-May-18	Access Arrangement Information - Attachment 7.3.1 – Connections Energy and Demand Forecast Methodology (The ERA received permission from Western Power to publish this document)	1.4 MB
02-May-18	Access Arrangement Information - Attachment 12.2 – GHD – Applications and Queuing Policy Review Report (The ERA received permission from Western Power to publish this document)	10 MB
06-Oct-17	Access Arrangement Information - Document Index	327 kB
06-Oct-17	Access Arrangement Information - Attachment 1.3 - 2016-2017 Regulatory Financial Statements	13 MB
06-Oct-17	Access Arrangement Information - Attachment 4.1 - Customer Insights Report	12 MB
06-Oct-17	Access Arrangement Information - Attachment 5.1 - AA3 Capital Expenditure Report	1 MB
06-Oct-17	Access Arrangement Information - Attachment 6.1 - Review of service standards methodology	2.9 MB
06-Oct-17	Access Arrangement Information - Attachment 6.2 - Fitting Distributions for AA4 Service Standard KPI's - SSB and SST	1.9 MB
06-Oct-17	Access Arrangement Information - Attachment 6.3 - Study into the feasibility of a microgrid at Kalbarri	5.3 MB
06-Oct-17	Access Arrangement Information - Attachment 6.4 - Estimation of value of customer reliability for Western Power's Network	1.4 MB
06-Oct-17	Access Arrangement Information - Attachment 7.1 - Cost and Revenue Allocation Method 2016/17	1.6 MB
06-Oct-17	Access Arrangement Information - Attachment 7.3 - Peak demand, energy and customer number forecasts	534 kB
06-Oct-17	Access Arrangement Information - Attachment 7.3.3 - Energy and Customer Numbers Forecast 2016	1.4 MB
06-Oct-17	Access Arrangement Information - Attachment 7.3.5 - Energy and Customer Numbers Forecast 2017	1.2 MB
06-Oct-17	Access Arrangement Information - Attachment 7.4 - Wage price index and Consumer price index forecasts	1.1 MB
06-Oct-17	Access Arrangement Information - Attachment 8.1 - AA4 Forecast Capital Expenditure	11 MB
06-Oct-17	Access Arrangement Information - Attachment 9.1 - A Constructive Review of the ERA's Approach to the Market Risk Premium	1.1 MB
06-Oct-17	Access Arrangement Information - Attachment 10.1 - AA4 Regulatory Revenue Model - PDF Summary	641 kB
06-Oct-17	Access Arrangement Information - Attachment 10.2 - Regulated Asset Base, Tax Asset Base and Depreciation	1 MB
06-Oct-17	Access Arrangement Information - Attachment 10.3 - Audit of Efficiency and Innovation Benchmark scale escalation drivers for the period 2011/12 to 2016/17	417 kB
06-Oct-17	Access Arrangement Information - Attachment 10.7 - Impact of Technical Rules changes on Western Power's expenditure for AA3	625 kB
06-Oct-17	Access Arrangement Information - Attachment 10.8 - Transmission Price Path	790 kB
06-Oct-17	Access Arrangement Information - Attachment 11.1 - AA4 Tariff Reforms	2.7 MB
06-Oct-17	Access Arrangement Information - Attachment 12.1 - Model ETAC for AA4 Change Summary	812 kB
06-Oct-17	Access Arrangement Information - Attachment 12.3 - Applications and Queuing Policy Change Summary	617 kB
06-Oct-17	Access Arrangement Information - Attachment 12.4 - Contributions Policy Change Summary	746 kB
06-Oct-17	Access Arrangement Information - Attachment 12.5 - Distribution Low Voltage Connection Scheme Change Summary	525 kB
06-Oct-17	Access Arrangement Information - Attachment 12.6 - Transfer and Relocation Change Summary	883 kB
06-Oct-17	Access Arrangement Information - Pro Forma Forecast Statements	716 kB

Additional supporting information

Date	Documents	File type
02-May-18	D-Factor Compliance Summary Bremer Bay (redacted)	315 kB
02-May-18	D-Factor Compliance Summary Ravensthorpe (redacted)	322 kB
14-Nov-17	Western Power Public Revenue Model Spreadsheet	1.5 MB
08-Nov-17	Western Power Regulatory Financial Statements - Years Ending 30 June 2013, 2014, 2015 and 2016	1.3 MB
08-Nov-17	Western Power’s productivity performance – Benchmarking Report – Synergies Economic Consulting	508 kB
08-Nov-17	Western Power’s productivity performance – Benchmarking Report Input Data	13.6 MB