Improving Awareness of System Operating Conditions

The IESO informs stakeholders of system operating conditions through advisory notices and operating states. Recent operating events during extreme weather have high-lighted opportunities to improve what the IESO communicates to stakeholders.

This engagement will be delivered in two phases. Phase one will be brief and will focus on two new advisory notices that could be communicated by the IESO. The goal of phase one is to enhance situational awareness to market participants when the potential for stressed system conditions are more likely to occur. This phase will involve minor internal manual changes. Phase two will require market rule and market manual amendments and a longer, more in-depth stakeholder engagement process. The goal of phase two is to revise the advisory notice framework and add new operating state(s) in order to provide greater clarity on situational awareness when market participant actions may be needed.

The IESO encourages stakeholders and particularly market participants to stay informed and participate in this engagement. To be added to the email list for communications related to this engagement or to submit comments and enquiries, please email

Related Information

Draft Engagement Plan

Schedule of Activities

Anticipated timing for this engagement is presented below.

Date Engagement Activity Expected Actions

January 27, 2022

The IESO will inform Market Participants (MPs) about an additional operating state of system operating conditions to improve operational awareness and to allow MPs the opportunity to plan and prepare their operations accordingly, and minimize risk to reliability and enhanced grid resilience. The IESO will present on key changes since the previous engagement webinar, held in April 2021, including the introduction of a new operation state. Participants will have the opportunity to ask questions and provide feedback on what actions they may take if this new operation state is declared.

Register or Join meeting

This webinar was presented during the IESO's January stakeholder engagement sessions, see full agenda for more information.

June 3, 2021

Improving Awareness of System Operating Conditions Engagement - Two New Advisory Notices Now in Effect


May 17, 2021

Deadline for stakeholder feedback on materials presented at April 22nd webinar.

May 28, 2021:  IESO Response to Stakeholder Feedback


April 22, 2021

The second session of this engagement will provide an update on phase one, with the focus being on phase two.  This will include a more detailed overview of the advisory notice framework and operating states, questions for stakeholder consideration, request for input from stakeholders as well as timelines.

Questions and Answers from Presentation

The recording of this webinar experienced technical difficulties during the IESO's April stakeholder engagement sessions. The attached document summarizes questions and answers during this session.  


March 23, 2021

Provide the scope of the two phases of this engagement and associated timelines. Details will be included for phase one.

Recorded Presentation

This webinar was presented during the IESO's March stakeholder engagement sessions, see full agenda for more information.

March 4, 2021

Improving Awareness of System Operating Conditions engagement launched.