Metering procedures, guidelines and processes
In this section
In this section
- Metering procedures, guidelines and processes
- Market Settlement and Transfer Solutions
- Business-to-business procedures
- Update to NEM load table (Unmetered Loads) – current proposals
- Update to NEM load table (unmetered loads) - previous proposals
AEMO publishes documentation about metering processes associated with metering in the National Electricity Market (NEM). A full list of NEM procedures, guidelines, and documents can be found on this page.Guide to Electricity Retail Market Procedures
Provides an explanation of retail electricity market procedures and supporting documents as required by Chapter 7 of the National Electricity Rules (NER).
Allocation of embedded network codes
- Guide to Electricity Retail Market Procedures v3.0 (1.6 MB, pdf)
The “allocation of embedded network codes” document is available to participants for determining the agreed structure of codes used in identifying the National Meter Identifiers (NMIs) making up an embedded network for both parent and child NMIs.Embedded network guidelines
This Guideline helps registered market participants, non-registered networks, and other parties to understand the principles and processes involved in market operations involving embedded networks.
- Establishing brownfield and greenfield embedded networks in Market Settlement and Transfer Solutions (MSATS).
- Managing choice of retailer for consumers who are eligible to choose their own retailer.
- Operational aspects of establishment and providing ongoing services to embedded networks, including meter provision and meter data services.
Distribution loss factor codes in MSATS
- Guide to Embedded Networks (588 KB, pdf)
Distribution Loss Factors (DLFs) are managed in MSATS by the use of Codes. These documents provides an explanation of the DLF Codes and the requirements on Local Network Service Providers to maintain the DLF values against the DLF Codes in MSATS.Metering data provision procedures
The Metering Data Provision Procedures establish the minimum requirements for the manner and form in which metering data should be provided by retailers and Distribution Network Service Providers (DNSPs) to retail customers (or their customer authorised representatives) in response to a request for such data from the retail customer or customer authorised representative.
The procedures include the minimum requirements for the:
Meter churn procedure for the financially responsible market participant
- Manner and form in which a retail customer’s metering data must be provided, including for interval metering data and accumulation metering data.
- Timeframes for retailers and DNSPs to respond to a request from a retail customer or customer authorised representative.
- Minimum delivery method for the requested metering data.
Compliance to this procedure is required by all financially responsible market participants. Meter Churn occurs where one or more meters are changed at a connection point, which results in a misalignment between the information provided in the participant Meter Data File Formatt (MDFF) metering datafile and NMI Standing Datadetails recorded in MSATS.
This document is published in accordance with clause 7.3.4 (j) of the Rules, for the financially responsible market participant to manage meter churn consistently within the NEM.Qualification and Accreditation – Metering Providers, Metering Data Providers & Embedded Network Managers
The National Electricity Rules (NER) require AEMO to establish a qualification process for the accreditation and registration of persons wishing to operate as Metering Providers, Metering Data Providers, and Embedded Network Managers in the National Electricity Market (NEM).
AEMO has produced a Qualification Procedure in accordance with the Rules consultation procedures.
Once accredited and registered, Metering Providers and Metering Data Providers may be engaged to provide the metering services and metering data services (as applicable) to NEM participants and AEMO.
Once accredited and registered, Embedded Network Managers may be engaged to provide embedded network management services to NEM participants and AEMO.
See the attached for further details:
Service Provider Compliance Assessment and Deregistration Procedure
- Qualification Procedure (Metering Providers, Metering Data Providers & Embedded Network Managers)
- Accreditation Checklists (Metering Providers, Metering Data Providers & Embedded Network Managers)
- Sample Responses to Miscellaneous Accreditation Requirement Questions (243 KB, pdf)
- Application Form (Metering Providers, Metering Data Providers & Embedded Network Managers) (87 KB, docx)
The Rules require AEMO to establish, maintain, and publish a deregistration procedure for service providers, where service providers breach provisions of the Rules or the service level procedures (SLPs).
This procedure details a process that enables AEMO to assess the severity of a Service Provider breach or non-conformity across a range of criteria. An assessment of a Service Provider's performance should occur on an occasional basis, where AEMO considers the performance of a Service Provider warrants such action.
The purpose of this Service Provider Compliance Assessment and Deregistration Procedure is to:
Service level procedures
- Define the process for accessing Service Provider compliance.
- Define the compliance measurement criteria for Service Providers.
- Define the consequential process to be applied in the event a Service Provider is non-compliant.
The service level procedure below details the obligations, technical requirements,and performances associated with the processes of meter reading, data collection, data processing, adjustment, aggregation and delivery of metering data.
The service level procedure below applies to metering providers who are accredited and registered by AEMO to provide category B metering services in the NEM.Accredited Metering Data Providers National Electricity Market
Following accreditation reviews, AEMO has given accreditation to the following organisations as Metering Data Providers in the National Electricity Market.Accredited Metering Providers National Electricity Market (MP cat. A and B services)
This document is a register of Metering Providers who are eligible to provide Metering Provider services in the National Electricity Market. The list also provides contact details and the installation categories of registration which the Metering Provider holds.
For further information on this document, please contact: firstname.lastname@example.org, Retail and MeteringAccredited Embedded Network Managers National Electricity Market
Following accreditation reviews, AEMO has given accreditation to the following organisations as Embedded Network Managers in the National Electricity MarketMetering Asset Management Plans: Information Paper
This information paper is to provide assistance to service providers in the establishment of a Metering Asset Management Plan (MAMP).Exemption procedure
This procedure sets out the process for seeking an exemption from AEMO under clause 7.3.7(a), clause 7.5.2(b), or clause S7.2.2(c) of the National Electricity Rules:
- Clause S7.3.7(a) of the Rules – Where a metering installation has been identified as malfunctioning, unless an exemption is obtained from AEMO, the responsible person must repair the malfunction within 2 business days for a type 1, 2, and 3 metering installation and within 10 business days for any other type of metering installation.
- Clause S7.5.2(b) of the Rules – Where a discrepancy with the metering register under clause 7.5.2(a) of the Rules occurs, then the responsible person must arrange for the discrepancy to be corrected within 2 business days.
- Clause S7.2.2(c) of the Rules – The use of metering class instrument transformers installed prior to 13 December 1998 that are not in accordance with requirements of the Rules are permitted provided that the overall accuracy requirements are achieved or the responsible person must obtain an exemption from AEMO.
An application for an Exemption must be made using the relevant application forms. The application for extension to an existing exemption is only applicable to an exemption under clause 7.3.7(a).
Exemption Procedure v10.1
17 Aug 2011 (303.45 KB, pdf)
Exemption Procedure Forms
11 Dec 2017 (91 KB, doc)Metering Data Delivery
Metering Data must be delivered to respective settlement systems as indicated in the appropriate MDP Data Delivery Calendar, related to the period concerned. AEMO will normally run the MSATS profile calculations and settlement aggregation process in the evening of the day that the MDP data delivery cut off occurs. It is possible, however, that this process does not occur as planned, to accommodate any data issues found or other processing scheduled requirements. Therefore, this calendar should not be relied on to specify exactly when MSATS processing will be run. Participants should refer to the MSATS Settlement Case IDs and the associated run times from the MSATS browser to determine when a particular settlement case is run.
Metering Data Delivery Dates: January 2018 to January 2019 (302 KB, pdf) Metering Data Delivery Dates: January 2017 to January 2018 (301 KB, pdf) Metering Data Delivery Dates: January 2016 to January 2017Meter Data File Format
In the NEM, Metering Data Providers are appointed to collect, process and deliver metering data to participants and AEMO in the required file format.
Metering data delivered to participants is to conform to the Meter Data File Format Specification (currently MDFF NEM12 and NEM13). Metering data delivered to AEMO must conform to the MDM data file format as defined by the respective schema and as detailed within the ‘MDM File Format and Load Process’ documentation.
FINAL Meter Data File Format Specification NEM12 & NEM13
14 May 2014 | filesize: 816 KB (.pdf)
(AEMO) MDM File Format and Load Process
25 Feb 2010 | filename: 0638-0026.pdf
NEM12 and NEM13 File Format Clarifications
11 Sep 2009 | filename: 0630-0003.pdf
The 'NEM12 & NEM13 - File Testing/Example Files' below detail the various MDP test file-build scenarios, and those examples which have been passed and accepted within the inter MDP test process. The 'NEM12 & NEM13 Error Files’ contain data scenarios which have deliberate file syntax and information errors. These files are provided to assist participants in the verification and build of MDFF loaders.
NEM12 and NEM13 File Testing
11 Sep 2009 | (pdf)
NEM12 Example Files
15 Jul 2005 | filename: 630-0046.zip
NEM13 Example Files
15 Jul 2005 | filename: 630-0047.zip
NEM12 Error Files
2 Jun 2005 | filename: 630-0037.zip
NEM13 Error Files
2 Jun 2005 | filename: 630-0038.zipRetail Transfer Statistical Data Specification
Every month AEMO publishes the numbers of retail transfers in the MSATS system. The specification document has been updated to reflect changes effective from 1 April 2011
The data will be published on AEMO’s website in the Market Data section: Retail Transfer Statistical Data.National Metering Identifier procedure
Use of a unique identifier, the National Metering Identifier (NMI), for connection points and associated metering points, is a crucial component in NEM operations for customer registration and transfer, change control, and data transfer.
National Metering Identifier Procedure National Metering Identifier Allocation List (135 KB, pdf)NEM Transmission Node Identities
The Transmission Node Identities (TNI) is used in all registrations and transfers of connection points in the NEM to facilitate market settlements processes. It identifies the points at which the intra-regional loss factors apply.
Each and every registered National Metering Identifier (NMI) must be referenced to its correct TNI. Note that the Power System Planning document Marginal Loss Factors and Regional Boundaries lists the TNIs against the loss factors.
NEM Transmission Node IdentitiesGuide to the Role of the Responsible Person
This guide outlines the roles of the responsible person, network service provider, metering provider, metering data provider, and financially responsible market participant in the NEM.
Although the document seeks to provide an explanation of the roles of these participants, only the National Electricity Rules can be relied on as the correct legal position.
Guide to the Role of the Responsible PersonSpecial and technology related sites
In accordance with clause 7.2.4A of the Rules, AEMO is required to publish a list of connection points that exhibit special site or technology related conditions (special site).
These special site or technology-related connection points are associated with transmission, interconnector, market generator, or cross-boundary connection points which have a complexity of metrology. These connection points by their nature require the engagement of a meter data provider who has a system capability in support of the ‘special site’ metering data collection and processing requirements.
List of Special and Technology Related Sites v1.12
20 May 2016 | 543 KB (pdf)Guideline for Clarification of the National Measurement Act
Guideline for Clarification of the National Measurement Act
06 June 2012 | 348 KB (pdf)