Key dates and preparation activities

Overview

The transition to NEIDAM will take place progressively, with activities occurring before Go-Live/Cutover and continuing through Industry Migration.

NEIDAM Go-Live/Cutover is planned for 2 May 2027. Following a period of stabilisation and pilots, Industry Migration is planned to commence from July 2027 and continue through to May 2028.

The transition has been structured to allow organisations to prepare their access arrangements ahead of go-live, before progressively moving users to the new NEIDAM access arrangements during Industry Migration.

Key Dates

Timing	Activity	What it means for your organisation
4 December 2026	Authorised representative nomination	AEMO's current preparation plan asks affected organisations to nominate a duly authorised person who can confirm their system access arrangements.
1 February 2027	System Access Organisation arrangements	Duly authorised representatives provide in main information about relevant System Access Organisation arrangements, the initial Organisation Administrator and initial email domain.
1 March 2027	Service Account and industry migration information	Organisation Administrators provide Service Account information, an IT mailbox, whether the organisation is considering Federation and its preferred Industry Migration timing.
31 March 2027	Default arrangements commence	AEMO defined default arrangements will apply where required information has not been provided by the end of March 2027.
2 May 2027	NEIDAM Go-Live/Cutover	AEMO transitions the existing user base to the new NEIDAM authentication, authorisation and user lifecycle services.
Following go-live	Stabilisation and pilots	Stabilisation and pilot activities take place before broader Industry Migration commences.
From July 2027	Industry Migration commences	Organisations begin progressively moving users to the new NEIDAM access arrangements.
By May 2028	Industry Migration completed	Organisations need to complete Industry Migration. Legacy user accounts that have not migrated will be disabled at the completion of the industry migration period. Note: All users who have yet to commence migration by February 2028 will be defaulted to Progressive Migration to meet the May 2028 deadline.

Understanding the Go-Live/Cutover

Before Go-Live: Preparing your organisation

Ahead of go-live, AEMO will collect information from organisations to establish the appropriate access arrangements.

AEMO will contact organisations individually and progressively engage the appropriate representatives as different information and actions are required.

This includes information about:

duly authorised representatives
System Access Organisation arrangements
the initial Organisation Administrator
the initial organisation email domain
Service Accounts in URM and a monitored IT mailbox
whether the organisation is considering Federation
preferred Industry Migration timing.

Supporting smooth continuity of access - default arrangements

AEMO will make every effort to communicate with all impacted stakeholders to collect the required information.

Recognising continued access is important, and to help minimise disruption, AEMO has defined default arrangements that will apply where required information has not been provided by the end of March 2027.

Where AEMO receives no response for the following	Default arrangement selected
Nomination of Duly Authorised Person	If a duly authorised person is not nominated, AEMO will proceed on the basis that the existing Registered Participant will act as its own System Access Organisation (SAO).
Nomination of System Access Organisation (SAO)	If an SAO arrangement is not confirmed by a duly authorised person from SAO, the existing Registered Participant will be established as its own SAO.
Nomination of initial Organisation Administrator	If an initial OA is not nominated, AEMO will select the first available existing Participant Administrator in alphabetical order (with a valid email) to act as the initial OA.
Email Domain	If an initial email domain is not provided, AEMO will use the email domain of the initial OA. Where an OA has not been nominated, the domain of the Participant Administrator selected as the initial OA will be used.
Service Accounts Confirmation	If an existing account is not identified as a Service Account, it will be treated as a user account for Go-Live/Cutover. Where an identified Service Account is being used as both a user and Service Account, it will be treated as a Service Account.
Industry Migration approach & timing	If an Industry Migration approach is not nominated, Progressive Migration will be selected. Note: All users who have yet to commence migration by February 2028 will be defaulted to Progressive Migration to meet the May 2028 deadline.

At Go-Live/Cutover: what changes on 2 May 2027

NEIDAM Go-Live/Cutover is planned for 2 May 2027.

At Go-Live/Cutover, AEMO will transition the existing user base from the current legacy solution to the new NEIDAM authentication, authorisation and user lifecycle services.

For users

Users will continue to authenticate in the same way they do today at Go-Live/Cutover and may notice some updates to the look and feel of the portals.

For administrators

Administrators will have some new functionality available

The SAO structure will be in place and the initial Organisation Administrator established.

Following Go-Live: stabilisation and pilots

Following Go-Live/Cutover, there will be a period of stabilisation and pilots before broader Industry Migration commences.

What changes when?

	Go-Live/Cutover	Industry Migration
When	2 May 2027	July 2027 to May 2028
Purpose	Introduce the new NEIDAM solution	Transition organisations and users to the new access arrangements
Users	Continue to authenticate in the same way as today initially	Progressively move to the new NEIDAM identity and access arrangements
Organisation Administrator	Introduced	Able to apply Segregation of duty and other functionality
System Access Organisation	Introduced at Go-Live/Cutover	Continue to support organisation-level access arrangements
MFA	Does not apply at Go-Live/Cutover	MFA controls apply after Industry Migration
Segregation of Duties (SoD)	Does not apply at Go-Live/Cutover	Segregation of Duties controls apply after Industry Migration by the OA

Completing Industry Migration

All organisations need to complete their Industry Migration by May 2028.

At the end of the migration period, legacy user accounts that have not migrated will be disabled.