Short Term Trading Market
This chapter provides an overview of the participant IT systems operating in the short term trading market (STTM Short Term Trading Market. A wholesale market that facilitates short-term gas trading between gas shippers and users. STTM hubs operate in Adelaide, Brisbane and Sydney.). It is relevant to IT decision making during participant onboarding and provides an understanding of what is required to interface with AEMO Australian Energy Market Operator’s market systems.
About STTM
The Short Term Trading Market (STTM) is a market-based wholesale gas balancing mechanism established at defined gas hubs. The market uses bids, offers, and forecasts to determine schedules for deliveries from the pipeline's transmission users and the hubs. The market sets daily market prices and settles each hub based on the schedules and deviations from schedules.
For more details, on AEMO's website, see:
- About STTM, see Short Term Trading Market.
- About registrable capacities, see Registration.
Figure 7 STTM IT systems overview
Participants are required to comply with the procedures set out by AEMO, which define the communication interfaces and infrastructure for electronic communications between AEMO and participants to support the operation of the gas market, see STTM Rules The National Gas or Electricity rules., STTM Procedures and STTM Interface Protocol.
STTM IT interfaces
Participants can use several interfaces to interact with STTM IT systems: file, web, and web services.
Table 20 Table 23: STTM interfaces
|
Interface |
Function |
|---|---|
|
Web portal (HTTPS) |
Participants can access the processes and functions of the STTM using a web browser. |
|
File upload to web portal (HTTPS) |
The SWEX allows direct uploading of files to the browser interface. |
|
File server (FTP) |
SWEX and MIS both provide FTP file interfaces for participant interaction with file servers. |
|
Web services (HTTPS) |
The SWEX system allows csv file uploading using HTTPS. |
STTM IT systems
STTM system functionalities summarises the IT systems available to participants in the STTM.
Table 21 STTM system functionalities
|
System |
Interface |
Description |
|---|---|---|
|
Web portal |
The SWEX provides the interface for market participants to submit bid data and other required market information such as:
|
|
|
File |
SWEXIE allows the upload of files to the STTM database using FTP, HTTPS, or csv file upload via SWEX. IT is a simplified process of submitting bids, offers, withdrawals, allocations, variations, and transactions. |
|
|
Web portal |
The MIS provides STTM reports for both public access and participant access. The reports detail STTM trading information and general market data. |
Details of the form of csv Comma Separated Values. A file format for data using commas as delimiters. transactions and MIS reports are described in the STTM Rules, STTM Procedures and STTM Interface Protocol.
STTM participant categories
STTM functionalities used by each registrable capacity describes the relevant functionalities used in STTM for each participant category.
Table 22 STTM functionalities used by each registrable capacity
|
Registrable capacity |
SWEX |
SWEXIE |
MIS |
|---|---|---|---|
|
STTM trading participants (shippers & users) |
C | C | C |
STTM user access
Each participant user must complete a Gas Systems User Access Request The way information is returned from an API. In a request, the client provides a resource URL with the proper authorization to an API server. The API returns a response with the information requested. and attach it to the registration application. The form allows for access to multiple markets and multiple companies for each participant user.
The request is an interactive electronic form that changes according to your selections, it must be completed using Adobe Reader version 9 or above. Please do not print the request and complete it manually. For help completing the form, see STTM user access request.
Figure 8 STTM user access request