Glossary and Rules Terms

This glossary lists common terms, acronyms, abbreviations, and measurements. For more terms, see Industry Terminology on AEMO Australian Energy Market Operator's website. Rules Terms are defined in the relevant Energy Rules.

• 5MLP
  Five-minute Load Profile
• ACE
  Adjusted Consumed Energy
• ADC
  Aggregated Dispatch Conformance
• AEDT
  Australian Easter Daylight Time (AEDT) is in use from the first Sunday in October to the first Sunday in April during Daylight Saving Time (DST). AEDT is used during the remainder of the year.
• AEMO
  Australian Energy Market Operator
• AER
  See Relevant Rules or Procedures
• Agent Participants
  See Relevant Rules or Procedures
• Allocated Units
  See Relevant Rules or Procedures
• Ancillary Service Prices
  See Relevant Rules or Procedures
• Ancillary Services
  See Relevant Rules or Procedures
• APA
  See Relevant Rules or Procedures
• APC
  Administrative Price Cap
• Application Portal
  Web applications for non-registered participants and Registered Participants. Does not require access to MarketNet.
• ASGU
  Ancillary Services Generating Unit
• ASL
  Ancillary Services Load (currently excludes generators or batteries)
• ASOE
  Adjusted Sent Out Energy
• ASU
  Ancillary Services Unit (new under IESS rule change encapsulating both generation and load)
• Auction Agreement
  See Relevant Rules or Procedures
• Auction Participant
  See Relevant Rules or Procedures
• Auction Participation Agreement
  See Relevant Rules or Procedures
• Average Cancellation Price
  See Relevant Rules or Procedures
• Backhaul
  See Relevant Rules or Procedures
• Backhaul delivery point
  See Relevant Rules or Procedures
• Backhaul pipeline segment
  See Relevant Rules or Procedures
• Backhaul receipt point
  See Relevant Rules or Procedures
• Backhaul services
  See Relevant Rules or Procedures
• BDU
  Bi-directional Unit. A bi-directional unit capable of charge and discharge; for example, battery technologies.
• BESS
  Battery Energy Storage System
• Bid
  See Relevant Rules or Procedures
• Bid and Offer Validation Data
  See Relevant Rules or Procedures
• Bid File
  See Relevant Rules or Procedures
• Business Day
  See Relevant Rules or Procedures
• Cancelled Units
  See Relevant Rules or Procedures
• Capacity
  PASA Availability, as described in clause 3.7.2(d)(1) of the National Electricity Rules and the NER glossary.
• Cash Security
  See Relevant Rules or Procedures
• Clearing Account
  See Relevant Rules or Procedures
• Compression Delivery point
  See Relevant Rules or Procedures
• Compression Delivery Zone
  See Relevant Rules or Procedures
• Compression Receipt Point
  See Relevant Rules or Procedures
• Compression Service Facility
  See Relevant Rules or Procedures
• Compression Services
  See Relevant Rules or Procedures
• Confidential Information
  See Relevant Rules or Procedures
• Constraint
  See Relevant Rules or Procedures
• Credit Support
  See Relevant Rules or Procedures
• CRMP
  Cost Recovery Market Participants
• CRUD
  Create, read, update, and delete access rights.
• Cumulative Price Threshold
  See Relevant Rules or Procedures
• Custodian Organisation
  The Participant ID assigned to the GSA survey
• D-n
  See Relevant Rules or Procedures
• Delivery Netting
  See Relevant Rules or Procedures
• Delivery Period
  See Relevant Rules or Procedures
• Delivery point
  See Relevant Rules or Procedures
• Delivery Zone
  See Relevant Rules or Procedures
• Directional Interconnector
  See Relevant Rules or Procedures
• Dispatch
  See National Electricity Rules
• Dispatch Bid
  See National Electricity Rules
• Dispatch Inflexibility Profile
  See Relevant Rules or Procedures
• Dispatch Instruction
  See Relevant Rules or Procedures
• Dispatch Interval
  See Relevant Rules or Procedures
• Dispatch Level
  See Relevant Rules or Procedures
• Dispatch Offers
  See Relevant Rules or Procedures
• Dispatchable Unit
  See Relevant Rules or Procedures
• Dispatchable Unit Identifier
  See Relevant Rules or Procedures
• DPV
  Distributed Photovoltaics or Distributed PV
• Dual MLF
  Dual Marginal Loss Factor, interchangeably used with Dual TLF (transmission loss factor) called Primary and Secondary MLF.
• ECG
  East Coast Gas
• Energy Constraint
  See Relevant Rules or Procedures
• ESOO
  Electricity Statement of Opportunities. AEMO’s 20-year demand forecast and 10-year supply adequacy assessment for electricity in the National Electricity Market (NEM); and AEMO’s 10-year demand and supply adequacy forecast for the South West interconnected system (SWIS) in Western Australia.
• Exchange
  See Relevant Rules or Procedures
• Exchange Agreement
  See Relevant Rules or Procedures
• Facility
  The facility to assist in the selection of the Receipt and/or Delivery Point.
• Facility Operator
  See Relevant Rules or Procedures
• FFR
  Fast Frequency Response
• Final Statement
  See Relevant Rules or Procedures
• FOM
  Fixed Operating & Maintenance cost ($/MWh)
• Forward Haul Service
  See Relevant Rules or Procedures
• FRC
  Full retail contestability
• Frequency
  See Relevant Rules or Procedures
• Gas Day
  See Relevant Rules or Procedures
• Generators
  See Relevant Rules or Procedures
• GRMBS
  Gas Retail Market Business System
• GU
  Generating Unit
• IESS
  Integrating Energy Storage Systems
• Inter-regional
  See Relevant Rules or Procedures
• Interconnector
  See Relevant Rules or Procedures
• Intermittent Generating Unit
  See Relevant Rules or Procedures
• intra-regional
  See Relevant Rules or Procedures
• IRP
  Integrated Resource Provider
• IRS
  Integrated Resource System
• ISP
  Integrated System Plan. AEMO’s whole-of-system plan that provides an integrated roadmap for the development of the National Electricity Market (NEM).
• ITFG
  Industry Testing Focus Group
• kWh
  Kilowatt hour
• Lack of Reserve
  See Relevant Rules or Procedures
• Linked Category Bid
  See Relevant Rules or Procedures
• Market Ancillary Services (MAS)
  Market Ancillary Services
• Market Customer
  See Relevant Rules or Procedures
• Market Floor Price
  See Relevant Rules or Procedures
• Market Generator
  See Relevant Rules or Procedures
• Market Network Service Provider
  See Relevant Rules or Procedures
• Market Participant
  See Relevant Rules or Procedures
• Market Price Cap
  See Relevant Rules or Procedures
• MarketNet
  AEMO's private VPN for Registered Participants. A network of more than 300 registered participants in the National Electricity Market, including market generators, transmission network service providers, distribution network service providers, and market customers.
• Markets Portal
  Web applications for registered participants only. Requires access to MarketNet.
• MAS
  Market ancillary services
• Maximum Credit Limit
  See Relevant Rules or Procedures
• Maximum Units
  See Relevant Rules or Procedures
• Member
  Participant Member
• MFA
  multi-factor authentication
• Monthly
  See Relevant Rules or Procedures
• Monthly product
  See Relevant Rules or Procedures
• MPF
  Market Participant Factor
• MT PASA Offer Payload
  The csv payload with the MT PASA Offer data
• MT PASA weekly offer period
  Sunday–Saturday
• Multi-factor Authentication app
  An app on your smartphone, such as Google, Microsoft, or Apple providing a second layer of authentication to produce a code to login to AEMO's Application Portal. The first layer of authentication is your Participant ID email and password.
• MyTerm
• National Electricity Market
  See Relevant Rules or Procedures
• National Electricity Rules
  See Relevant Rules or Procedures
• National Metering Index
  See Relevant Rules or Procedures
• NECR
  Non-energy Cost Recovery
• NEM
  See Relevant Rules or Procedures
• Network Control Ancillary Services
  See Relevant Rules or Procedures
• NMI
  See Relevant Rules or Procedures
• NMI Standing Data
  See National Electricitiy Rules
• Nomination Cut-off Time
  See Relevant Rules or Procedures
• Non-Registered Participant
  A person who is NOT registered by AEMO in any one or more of the categories listed in the Energy rules.
• Non-scheduled Generating Unit
  See Relevant Rules or Procedures
• NSLP
  Net System Load Profile
• Offer Payload
  Bid or Offer submitted by a participant
• Open Interest (ASX)
  See Relevant Rules or Procedures
• OTSA
  Operational Transportation Service Agreement
• Outstandings
  See Relevant Rules or Procedures
• PA
  Participant Administrator. Super-users who manage and perform system administration tasks for their own organisation’s participant users.
• PA Right
  The rights assigned to a PA by the AEMO System Administrator.
• Participant Administrator
  Creates and maintains access to AEMO systems for their Participant ID users.
• Participant ID
  Registered participant identifier; A company can have more than one Participant ID.
• Participant Member
  A Participant ID's users created and maintained by the External Portal PA in SAM.
• Permissions
  Permissions are the access privileges given to a Role such as create, read, update, and delete.
• Physical Delivery
  See Relevant Rules or Procedures
• Pipeline segment
  See Relevant Rules or Procedures
• Planned Availability
  Capacity in MW
• Plant
  See Relevant Rules or Procedures
• Plant Availability
  See Relevant Rules or Procedures
• Pre-dispatch
  See Relevant Rules or Procedures
• Preliminary Statement
  See Relevant Rules or Procedures
• Price Bands
  See Relevant Rules or Procedures
• Product
  See Relevant Rules or Procedures
• Proportional Entitlements
  See Relevant Rules or Procedures
• Quarter
  See Relevant Rules or Procedures
• Reallocation Transaction
  See Relevant Rules or Procedures
• Reallocator
  See Relevant Rules or Procedures
• Recall Time
  The time the Participant ID expects the Scheduled Generating Unit to take to return to full PASA Availability under normal conditions
• Receipt Point
  See Relevant Rules or Procedures
• Receipt Zone
  See Relevant Rules or Procedures
• Region
  See Relevant Rules or Procedures
• Regional
  See Relevant Rules or Procedures
• Regional Reference Price
  See Relevant Rules or Procedures
• Registered Participant
  See Relevant Rules or Procedures
• Relevant Quarter
  See Relevant Rules or Procedures
• Reliability and Emergency Reserve Trader
  See Relevant Rules or Procedures
• Retailer
  See Relevant Rules or Procedures
• Roles
  Roles are components of SAM, the AEMO system administrator creates with rights already assigned. PAs assign the roles to their Members allowing access to AEMO's external markets portal systems.
• SAM
  System Access Management
• SAPS
  Standalone Power Systems
• SBDU
  Small Bidirectional Unit
• Scheduled Load
  See Relevant Rules or Procedures
• Scheduled Network Service
  See Relevant Rules or Procedures
• SDC
  Semi-scheduled Dispatch Cap
• Semi-scheduled Generating System
  See Relevant Rules or Procedures
• Semi-scheduled Generating Unit
  See Relevant Rules or Procedures
• Semi-scheduled Generator
  See Relevant Rules or Procedures
• Set of rights
  A combinations of create, read, update, and delete
• Set Participant
  Where a Participant User has user rights assigned by more than one participant ID, the Participant User can select the participant ID they want to represent using the Set Participant option in the web portals.
• Settlement Residue
  See Relevant Rules or Procedures
• Settlement Residue Distribution Agreement
  See Relevant Rules or Procedures
• Settlements
  See Relevant Rules or Procedures
• Settlements Amount
  See Relevant Rules or Procedures
• SGA
  Small Generator Aggregator
• SGU
  Scheduled Generating Unit. A generating unit with a nameplate rating of 30MW or greater. Note that a group of generating units with a combined nameplate rating of 30MW or greater is also classified as a Scheduled Generating Unit.
• Shippers
  See Relevant Rules or Procedures
• Small Resource Aggregator (SRA)
  Small Resource Aggregator
• Spot Market Transactions
  See Relevant Rules or Procedures
• SRA
  Small Resource Aggregator
• SRA Agents
  See Relevant Rules or Procedures
• SRA Auction
  See Relevant Rules or Procedures
• SRA Auction Participants
  See Relevant Rules or Procedures
• SRDA
  See Relevant Rules or Procedures
• Successful Auction Participant
  See Relevant Rules or Procedures
• System Administrator
  The AEMO system administrator who sets up participant administrators and maintains Participant ID access.
• TBC
  To be confirmed
• Trader
  See Relevant Rules or Procedures
• Trading Day
  See Relevant Rules or Procedures
• Trading Interval
  See Relevant Rules or Procedures
• Trading Margin
  See Relevant Rules or Procedures
• Trading Participant
  See National Gas Rules
• Trading Window
  See Relevant Rules or Procedures
• Transaction
  See Relevant Rules or Procedures
• Transmission Lines
  See National Electricity Rules
• Transmission Loss Factor
  See Relevant Rules or Procedures
• Transmission Network Service Provider
  See Relevant Rules or Procedures
• Typical Accrual
  See Relevant Rules or Procedures
• UAM
  Uniform Allocation Method
• Unit Category
  See Relevant Rules or Procedures
• Unit State
  A Scheduled Generating Unit’s availability or unavailability and the reason for it
• Unit State Code
  The code representing the Unit State
• Units
  See Relevant Rules or Procedures
• VFFCAS
  Very Fast FCAS
• VOM
  Variable Operating & Maintenance cost ($/MWh)
• Wallumbilla
  See Relevant Rules or Procedures
• WCP
  Wholesale Connection Point
• Weekly Energy Limit
  Weekly energy constraints submitted by participants, as described in clause 3.7.2(d)(2) of the National Electricity Rules, the NER glossary, and the MT PASA process description.