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Manuals, guides & standards


Detailed customer connection schedules The detailed customer connection schedules assist users planning to connect small generators to the Western Power distribution system. It addresses planning, protection, operational, certification and approval for commissioning issues.
Distribution design catalogue The Distribution design catalogue contains the approved standard equipment arrangements for the design of our underground and overhead distribution networks within the Western Power network.
Distribution commissioning manual This Distribution commissioning manual is for use when testing and commissioning activities of electrical apparatus on Western Power’s distribution network.
Distribution construction standards handbook The Distribution construction standards handbook is for both HV and LV of the overhead and underground system, including the streetlights. 
Distribution customer connection requirements The Distribution customer connection requirements details network arrangements for both customer connections and the interconnection of substations to Western Power's LV/HV distribution network within the South West Interconnected Network (SWIN)
Distribution substation plant manual The Distribution substation plant manual (DSPM) contains a suite of standard diagrammatic representation designs of Western Power plant and equipment within a specified land area (the distribution substation site).
Safety, health and environment requirements for contractors The Safety, health and environment requirements for contractors outlines our expectations of contractors.
Underground cable installation manual The Underground cable installation manual sets out the requirements for the safe and efficient installation of underground cables that are to be connected to our public distribution system. 
Underground distribution schemes manual (UDS) The Underground distribution schemes manual (UDS) contains the information required by developers and their electrical consultants to allow them the undertake the electrical reticulation of new subdivisions. 
WA distribution connections manual (WADCM) The WA distribution connections manual (WADCM) is a comprehensive reference for industry and the community when seeking an electrical connection of a customer’s installation to the distribution network of Western Power’s South West interconnected system (SWIS).   


Customer funded community engagement If you have requested work by Western Power you may be required to demonstrate that you have undertaken community engagement for your project.
Deciding between overhead and underground construction in road reserves Please refer to the process when deciding between overhead and underground construction in road reserves for power supplies associated with subdivision and non-subdivision projects.
Decorative fixtures, signs and banners on our assets The requirements for the attachment of fixtures, fittings, signs and banners on our poles and streetlight columns.
Generator and Load Model guidelines The Generator and Load Model Guidelines clarifies Western Power's approach to developing and maintaining accurate computer models, and clarifies users' requirements for provision of computer models and associated information for new connections or modifications to existing facilities.
Generator Commissioning Tests guidelines This template is to be used when a market participant wants to commission a generator to the Western Power network.
Generator compliance monitoring program requirements A program for generators to monitor the performance of the plant to ensure ongoing compliance with performance standards.
Generator Performance Standards

Generator Performance Standards apply to Transmission Connected Generating Systems and are defined in the Wholesale Energy Market rules.


The Generator Performance Standards Template is used to capture Generator Performance Standards (GPS). A completed GPS Template should be provided to us as part of the application process for all transmission connected generating systems.


WEM Procedure: Generation System Model Submission and Maintenance – This WEM procedure specifies the procedure for the provision of modelling data by existing or prospective Market Participants with new or modified Transmission Connected Generating Systems in accordance with clauses 1.36.4, 1.40.30 and 3A.4.2 of the WEM Rules.


WEM Procedure: Generator Performance Standards for Existing Transmission Connected Generating Systems – This WEM procedure applies to Existing Transmission Connected Generating Systems as at 1st February 2021 and describes the process to be followed by Market Participants and by Western Power when assessing Generator Performance Standards for Existing Transmission Connected Generating Systems.

Guidelines for acceptable use of ICT systems The Guidelines for acceptable use of ICT systems seeks to ensure that ICT systems are used in a legal, ethical and responsible manner. The IT and Records Management policy sets out record-keeping obligations, and the ICT Cyber Security Standard sets out obligations to protect our systems.
Material selection guidelines for bedding sand, backfill sand, general backfill around cables The bedding sand and backfill sand around cables and general backfill for cable trenches - Material selection guidelines.
Multiple disturbance ride through assessment guideline

The Multiple disturbance ride through assessment guideline gives the generators an overall understanding of Western Power's assessment methodology for the multiple disturbance ride through technical requirement.

New Wholesale Electricity Market (WEM) rules has been introduced and came into effect as of 1 February 2021. Appendix 12 of the WEM rules stipulates new requirements (access standards) for all types of generation to ride through multiple disturbances (faults), as part of its proposed rule change on generator technical performance standards. 

Network access billing Information about customer care and access billing management system.
Network Integration Guidelines The Network Integration Guidelines details requirements for AS/NZS 4777 compliant Inverter Embedded Generator (IEG) systems based on the customer’s connection arrangement from the Western Power network.  It provides guidance on:
  • identifying the customer's network supply arrangement;
  • determining maximum IEG able to be connected to that current supply arrangement;
  • understanding what types of systems can be connected (PV, energy storage, other energy sources); and
  • identifying the correct requirements to be met.
An interim document Battery Inverter Energy System(IES) Requirements details requirements in addition to the Network Integration Guideline for these Battery IES.  This interim document is to be used in conjunction with the Network Integration Guideline and has been in effect since 1 January 2018.
Power System Stability Requirements Guideline The Power System Stability Requirements Guideline outlines the requirements to keep the electricity network in a stable condition when a fault event occurs. It also includes definitions for Adequately Damped, Credible Contingency, Credible Fault Type, Generating System, Generating Unit, Power system, Small Disturbance and Large Disturbance.
Retailer connections Information for retailers regarding various connections and tariffs for customers
Small generator user guide The guide for the connection of generators up to 10 MW to our grid.
Small strata connections The Switchboard arrangement for small strata lot development guideline details the current subdivision and connection requirements for small strata developments of up to 4 lots.
Technical guidance for solar installers Information for solar installers relating to embedded generation systems.

Policies & Standards

Artwork on Western Power assets The technical requirements for the application of artwork on Western Power's network assets
Build Pack The Build Pack defines the processes, procedures and methods used to communicate between the network operator and code participants. The Build Pack has been developed by consultative process between code participants.
Distribution equipment labelling standard Distribution equipment labelling standard for the consistency in labelling equipment for distribution equipment on the distribution network.
Distribution overhead to underground conversion standard The distribution overhead to underground conversion standard sets out the conditions under which Western Power will provide a domestic underground connection within an existing overhead electricity distribution network.
Earthing Standards The Earthing Standards – Frequently asked questions gives information on earthing issues, including from minimum resistances, to the placement of earth rods. 
Electrical System Safety Rules (ESSR)

The Electrical System Safety Rules (ESSR) outline the minimum electrical safety standards for personnel working on, near or in the vicinity of Western Power’s electrical network and associated apparatus in Western Australia. The ESSR has been made publically available for contractors who are authorised to work on or near the network and reading the ESSR does not enable an ordinary person to access or work on the electrical network.

High voltage pool policy

The high voltage (HV) subdivision pool allows the cost of installing HV infrastructure to be shared among developers of residential subdivisions.

HV substation feeder exit circuits isolation policy The HV substation feeder exit circuits isolation policy shows the requirements for all ZSFE circuits to have an isolation point on the remote end of the circuit before any Y Splits in the network or connections to transformers.
Metering code The Electricity Industry Metering Code 2012 provides information on the rights, obligations and responsibilities of Code participants. It outlines rules for providing metering installations at connection points, metering services, standing data and energy data.
Noise Compliance Requirements for Distribution Transformers Noise emissions from transformers located near existing or proposed noise sensitive premises will be evaluated in line with the Noise Compliance Requirements for Distribution Transformers to ensure sufficient separation or mitigation is in place.
Safety, Health and Environment policy The Safety, Health & Environment policy summarises our commitment to safe outcomes for our workforce, our customers and the environment.
Technical Rules

The Technical Rules are the technical requirements to be met by Western Power on the transmission and distribution systems and by users who connect facilities to the transmission and distribution systems. Western Power's planning criteria to be applied to the transmission and distribution systems are contained within these Rules. Prospective users or existing users who wish to connect facilities to the transmission and distribution systems must first submit an access application to us in accordance with the Access Code. For more information refer to the Technical Rules page.

Telecommunication equipment located in the vicinity of proposed distribution HV earths Requirements for high voltage distribution earthing system installations so they do not result in dangerous levels of earth potential rise (EPR) on nearby telecommunications assets. Telecommunication equipment located in the vicinity of proposed distribution HV earths.
Un-metered supply network standard The un-metered supply network standard sets out the requirements for the installation and connection of an un-metered supply to our low voltage distribution network.