Market Notices

AEMO ELECTRICITY MARKET NOTICE

Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.

Region: NSW1

Lines: Bayswater - Mt Piper No.5A3 500kV and Wollar - Mt Piper No.5A5 500kV

Cancellation time: 27/02/2025 16:53

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 125119

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.

Region: NSW1

Lines: Bannaby - Mt Piper 5A6 500kV and Bannaby - Mt Piper 5A7 500kV

Cancellation time: 27/02/2025 15:48

Constraint set(s) revoked:
N-5A6+5A7_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
VIC1-NSW1


Refer AEMO Electricity Market Notice 125118

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.

Region: NSW1

Lines: Bayswater - Mt Piper No.5A3 500kV and Wollar - Mt Piper No.5A5 500kV

Duration: 27/02/2025 14:51 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.

Region: NSW1

Lines: Bannaby - Mt Piper 5A6 500kV and Bannaby - Mt Piper 5A7 500kV

Duration: 27/02/2025 14:47 until further notice

Constraint set(s) invoked:
N-5A6+5A7_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
VIC1-NSW1


Auto-generated on behalf of Manager NEM Real Time Operations

Change Number: CHG0100544
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: MSATS - Consumer Administration and Transfer Solution(CATS)
Change Title: MSATS - CATS Production Site Transfer Brisbane to Norwest
Change Start Date & Time: 02/03/2025 09:00:00
Change End Date & Time: 02/03/2025 15:00:00
Outage Start Date & Time: 02/03/2025 10:00:00
Outage End Date & Time: 02/03/2025 14:00:00
Environment: Production
Participant Impact and Requirements
The outage will affect logins to Web Portals, MSATS, WEMDEUI, OPDMS, NOS, TMM, Gas Supply Hub, Capacity Auction, and Gas Bulletin Board. API calls to these services will be unavailable during the URM outage.
Outage Windows:
MSATS: 10:00 - 14:00 AEST
URM: 11:15 - 11:45 AEST
Impacted Services:
Web Portals (Markets, Internal & Public) and the following systems:
WEMDEUI, GSH, GBB, MSATS, DERR, PMS, RERT, SIMMS, DWGM, EMMS, Market Notice, DI
Key Impacts:
MSATS, Meter Data Processing, RM reports, B2B, B2M screens, NMI Discovery, CDR, and CDP will be unavailable.
Logged-in users before the outage will not be affected, but logging out means waiting until the outage ends to log back in.
Password resets and new account creations during the URM outage must be redone.
MSATS and NOS Server FTP sessions will be disabled, but Wholesale MMS FTP will remain available.
Plain English constraints and the redirection menu will be unavailable during the outage.
Capacity auction bidding via the Markets Portal and direct API calls will be unavailable.
Gas Supply Hub will remain open for trading, but reports will be inaccessible via Publishing Direct.
Recommendation:
Users should log in before the outage and remain logged in to avoid disruptions.
Support Information:
Report any impacts to the AEMO Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities .

Change Number: CHG0101364

Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: Gas Hub
Change Title: A production site transfer of the Electricity and Gas B2B Hub will be carried out to facilitate maintenance activities.
Change Start Date & Time: 02/03/2025 09:00:00
Change End Date & Time: 02/03/2025 17:00:00
Outage Start Date & Time: 02/03/2025 10:00:00
Outage End Date & Time: 02/03/2025 14:00:00
Environment: Production
Participant Impact and Requirements: The following impacts are expected during this maintenance:
- All access to the Electricity B2B Hub will be unavailable.
- All access to the Gas B2B Hub and all ebXML gateways (AEMOMIBB, AGNLGWY, LVI & VENCORP) will be unavailable. CATS and MDMT transactions for VIC/QLD will be delayed during the maintenance window.
- Users are not required to take any action due to this change, however will need to enact manual workarounds for the outage period.

Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities .

AEMO ELECTRICITY MARKET NOTICE

NON-CONFORMANCE NSW1 Region Thursday, 27 February 2025

AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:

Unit: WTAHB1
Duration: 27/02/2025 08:45 to 27/02/2025 08:55
Amount: -7 MW
Constraint: NC-N_WTAHB1

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.

Region: NSW1

Lines: Bannaby - Mt Piper 5A6 500kV and Bannaby - Mt Piper 5A7 500kV

Cancellation time: 27/02/2025 04:13

Constraint set(s) revoked:
N-5A6+5A7_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
VIC1-NSW1


Refer AEMO Electricity Market Notice 125108

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.

Region: NSW1

Lines: Bayswater - Mt Piper No.5A3 500kV and Wollar - Mt Piper No.5A5 500kV

Cancellation time: 27/02/2025 03:58

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 125109

Auto-generated on behalf of Manager NEM Real Time Operations