REM IT Systems Implementation

CONTACT INFORMATION REQUEST: If you have not yet provided the AESO with your organization contacts for REM Implementation information and notifications, please do so here. Note you must have an AESO Engage account and be signed in to submit.

Direct all questions, comments and feedback relating to REM IT Systems Implementation to MarketTransition@aeso.ca

Important Dates & Materials

October 30 | Market Participant Sandbox Access Questionnaire due (submit below)

October 22 | Stakeholder Session | REM Implementation and Market Readiness Office Hours registration

October 20 | October REM IT Systems Working Group registration

October 9 | Stakeholder Update | Early Look at the Market User Interface (below)

September 23 | Stakeholder Update | InfoHub Launch

September 22 | September REM IT Systems Working Group presentation

October 9 | Stakeholder Update

An Early Look at the Market User Interface

The AESO is pleased to provide market participants with an early look at materials for the Market User Interface (MUI) in the Market Management System (MMS) ahead of the Soft Launch in Q1 2027. These three reference materials are available on InfoHub and provide a preview of the MUI, including key screens, features and technical requirements for common market operations:

  • MUI User Guide
  • MUI API Specification
  • AESO_MUI_API.json file

Releasing these materials now gives market participants time to become familiar with the new interface and begin preparing for the Soft Launch. Additional information about access, testing and timing will be shared as implementation progresses.

IT Systems Working Group

A monthly, virtual forum that gives market participants early, practical insight into upcoming REM IT changes so they can plan and prepare. Each session will focus on a specific topic or topics, including planned interface and API updates, expected technical impacts, and include time for questions and discussion. The regular cadence supports ongoing readiness as capabilities are released in phases.

This forum will help participants understand which systems and interfaces will be affected when, what connectivity or access changes may be required, and how to plan, sequence, and resource their internal work ahead of each sandbox release.

Sessions will be open, transparent, and aligned with general delivery timelines. A summary of each will be shared afterwards, however they will not be recorded and posted.

Audience: The group is intended for those responsible for implementing and integrating REM-related IT system changes, with consistent core participation and additional subject matter experts joining as needed.

2026 Dates and Topics

Sessions (virtual)Topics (tentative)
Tuesday, June 23 | 1 - 3 p.m.

Participant Market Submissions
Market User Interface (MUI)
Application Programming Interface (API)
Tuesday, July 21 | 1 - 3 p.m.Market Messaging and Dispatch Service (MMDS) and API
Tuesday, Aug.18 | 1 - 3 p.m.

Market Settlement System (MSS) Portal and API
InfoHub - Settlement Reports
Tuesday, Sept. 22 | 1 - 3 p.m.Generator Outage Submissions
Preparing for Soft Launch
Tuesday, Oct. 20 | 1 - 3 p.m.Offer Control Submissions
Tuesday, Nov. 24 | 1 - 3 p.m.Participant & Asset Registration
Market Participant Requests and Commercial Model Management (CMM) - MP View
Market Participant Secure Log-in


Readiness Journey: IT Systems Implementation

Purpose

This is the central source of information for engagements relating to the REM IT Systems Implementation. It provides market participants with clear, current details to support planning and implementation, including materials from the working group, upcoming changes, timelines and supporting resources.

It is designed to give easy access to what market participants need, when you need it, so you can understand impacts to your systems, prepare for upcoming releases and coordinate internal work. It supports transparency and consistency by keeping all integration-related updates, materials and guidance in one place.

CONTACT INFORMATION REQUEST: If you have not yet provided the AESO with your organization contacts for REM Implementation information and notifications, please do so here. Note you must have an AESO Engage account and be signed in to submit.

Direct all questions, comments and feedback relating to REM IT Systems Implementation to MarketTransition@aeso.ca

Important Dates & Materials

October 30 | Market Participant Sandbox Access Questionnaire due (submit below)

October 22 | Stakeholder Session | REM Implementation and Market Readiness Office Hours registration

October 20 | October REM IT Systems Working Group registration

October 9 | Stakeholder Update | Early Look at the Market User Interface (below)

September 23 | Stakeholder Update | InfoHub Launch

September 22 | September REM IT Systems Working Group presentation

October 9 | Stakeholder Update

An Early Look at the Market User Interface

The AESO is pleased to provide market participants with an early look at materials for the Market User Interface (MUI) in the Market Management System (MMS) ahead of the Soft Launch in Q1 2027. These three reference materials are available on InfoHub and provide a preview of the MUI, including key screens, features and technical requirements for common market operations:

  • MUI User Guide
  • MUI API Specification
  • AESO_MUI_API.json file

Releasing these materials now gives market participants time to become familiar with the new interface and begin preparing for the Soft Launch. Additional information about access, testing and timing will be shared as implementation progresses.

IT Systems Working Group

A monthly, virtual forum that gives market participants early, practical insight into upcoming REM IT changes so they can plan and prepare. Each session will focus on a specific topic or topics, including planned interface and API updates, expected technical impacts, and include time for questions and discussion. The regular cadence supports ongoing readiness as capabilities are released in phases.

This forum will help participants understand which systems and interfaces will be affected when, what connectivity or access changes may be required, and how to plan, sequence, and resource their internal work ahead of each sandbox release.

Sessions will be open, transparent, and aligned with general delivery timelines. A summary of each will be shared afterwards, however they will not be recorded and posted.

Audience: The group is intended for those responsible for implementing and integrating REM-related IT system changes, with consistent core participation and additional subject matter experts joining as needed.

2026 Dates and Topics

Sessions (virtual)Topics (tentative)
Tuesday, June 23 | 1 - 3 p.m.

Participant Market Submissions
Market User Interface (MUI)
Application Programming Interface (API)
Tuesday, July 21 | 1 - 3 p.m.Market Messaging and Dispatch Service (MMDS) and API
Tuesday, Aug.18 | 1 - 3 p.m.

Market Settlement System (MSS) Portal and API
InfoHub - Settlement Reports
Tuesday, Sept. 22 | 1 - 3 p.m.Generator Outage Submissions
Preparing for Soft Launch
Tuesday, Oct. 20 | 1 - 3 p.m.Offer Control Submissions
Tuesday, Nov. 24 | 1 - 3 p.m.Participant & Asset Registration
Market Participant Requests and Commercial Model Management (CMM) - MP View
Market Participant Secure Log-in


Readiness Journey: IT Systems Implementation

Purpose

This is the central source of information for engagements relating to the REM IT Systems Implementation. It provides market participants with clear, current details to support planning and implementation, including materials from the working group, upcoming changes, timelines and supporting resources.

It is designed to give easy access to what market participants need, when you need it, so you can understand impacts to your systems, prepare for upcoming releases and coordinate internal work. It supports transparency and consistency by keeping all integration-related updates, materials and guidance in one place.

  • MP Sandbox Access Questionnaire

    Purpose

    We require information identifying the individuals who need access to the REM Soft Launch Sandbox environments. The person submitting the questionnaire is providing this information on behalf of their organization. Following AESO review and processing of the submission, each individual listed as a Sandbox User will receive an email invitation from AESO to set up their account. All submissions are due by Friday, Oct. 30, 2026. They will NOT be posted on AESO Engage. 

    Please note that this questionnaire pertains only to Sandbox access for testing and validation purposes during the Soft Launch phase. This is not a role-based access provisioning exercise and does not represent the approach that will be used for Trials or Go-Live. Future access management, including role-based access controls, and user provisioning processes, will be addressed separately.

    Note the information provided will be used by the AESO to correspond with your organization on matters relating specifically to the Market Transition. By providing your information, you are consenting to its use for these purposes. Should the contact information you've provided change, please email MarketTransition@aeso.ca with updates.

    Instructions

    1. Download the Market Participant Sandbox Access Questionnaire

    2. Complete the applicable fields and save the populated questionnaire. Include all individuals who require Sandbox access. 

    3. Only one completed questionnaire will be accepted per organization

    4. To upload your completed questionnaire, you need to be registered and signed in on the AESO Engage platform

    4. Click on the "Submit" button to complete the upload. 

    5. Responses are due by Friday, Oct. 30, 2026 

    Information Requested (Questions)

    1. Submitter name, email address, phone number

    2. Market Participant Organization and Participant ID

    3. API Technical Contact name, email address, phone number

    4. API Interest (check-boxes)

    5. Sandbox Users name(s), email address(es), phone number(s)

    The collection of your personal information is authorized under Section 4(c) of the Protection of Privacy Act. The personal information will be used to set-up and manage your profile, and access to AESO information assets. Your information will be subject to automated processing. If you have any questions about the collection or use of this information, please contact the Privacy Officer, Law, 30th Floor, 3000, 240 – 4th Ave SW, Calgary, Alberta, T2P 4H4, by email at privacy@aeso.ca or by telephone at 403-539-2890.


    Submit Questionnaire
Page last updated: 09 Oct 2026, 01:26 PM