Day-Ahead Market Engagement

Documents referenced on this page, but not posted, can be obtained by contacting engagement@ieso.ca with a link to the web page that lists the document and advise whether it needs to be provided in an accessible format. Please allow a minimum of one business day for a response.

Update August 21, 2019: The Day-Ahead Market high-level design engagement has completed. Please visit the energy detailed design engagement to learn about current engagement opportunities.

The IESO is working with stakeholders to design and develop a financially-binding Day-Ahead Market. A Day-Ahead Market will provide market participants with price certainty ahead of real-time, increase operational certainty for both market participants and the IESO, and reduce out of market payments.

Background

Soon after the market opened in 2002, the IESO began discussions with stakeholders on the development of a financially-binding day-ahead market. The Day-Ahead Market project did not proceed for a number of reasons but a key challenge was the complexities of settlement and operation under the existing two-schedule system for pricing and dispatch.

The IESO launched a day-ahead commitment process (DACP) in 2006, which commits certain dispatchable generators and the economic scheduling of imports in the day‐ahead time frame, in return for a financial guarantee. A number of further enhancements were made to the day-ahead commitment process in 2011, including improved optimization and allowing committable generators to submit their start-up and operations costs along with their energy offers.

While many improvements have been made to the commitment process, the absence of a day ahead financial commitment for all resources limits the extent to which participants will fully and efficiently participate.

The replacement of the existing Enhanced Day-Ahead Commitment Process with a financially-binding Day-Ahead Market (DAM) can provide significant improvements and benefits:

dispatchable resources have improved production certainty
the system operator has improved operational certainty as real-time approaches, and
consumers benefit from more efficient and cost-effective decisions overall.

The transition to a DAM is enabled significantly by the move to a single schedule electricity market under Market Renewal.

Get involved

This initiative will reenvision how stakeholders participate and are committed in the day-ahead timeframe and will therefore be of interest to all IESO market participants.

Interested parties are invited to participate in, and provide feedback on, any of the Market Renewal initiatives.

For more information about how to become involved or to provide comments on this initiative, please contact engagement@ieso.ca.

Stakeholder Engagement Plan

Day-Ahead Market High-Level Design (final full document August 2019)

Executive Summary (final August 2019)

Revisions to the Energy Stream High-Level Design Documents (August 2019)

Day-Ahead Market High-Level Design (draft full document December 2018)

Executive Summary (draft December 2018)

Backgrounder

Issues & Actions Log

DAM Design Tracker

Schedule of Activities

Date Agenda	Activities	Expected Actions
August 8, 2019	IESO Response to Stakeholder Feedback – Day-Ahead Market IESO Response to Stakeholder Feedback – General themes on the energy stream
February 28, 2019	Stakeholder Feedback AMPCO APPrO AEMA Capital Power Consortium of Renewable Generators, Energy Storage Providers & Industry Associations EDA Goreway Power Station HQ Energy Marketing Hydro Ottawa Northland Power Ontario Energy Association Ontario Power Generation Ontario Waterpower Association Toronto Hydro TransAlta
February 7, 2019	Q&A Session Communication
December 20, 2018	Release of draft DAM High-Level Design
December 15, 2018	Stakeholder Feedback Ontario Power Generation Ontario Waterpower Association
November 22, 2018	Deadline for feedback on SSM HLD Communication
October 18, 2018	Market Renewal Education and Awareness Sessions for targeted audiences
October 18, 2018	Stakeholder feedback on materials and issues discussed at the September 20^th meeting AMPCO Market Surveillance Panel Ontario Power Generation IESO Response to Stakeholder Feedback
September 20, 2018 Agenda Minutes	Stakeholder Meeting Communication Presentation Congestion Rents and Loss Residual Zonal Disbursement Methodology Intertie Congestion Pricing Review of Market Power Mitigation Decisions and Guidelines Introduction to the High Level Design Review Process Day Ahead Market Detailed Design Phase
August 24, 2018	Stakeholder Feedback Ontario Power Generation
August 16, 2018	Stakeholder Feedback on materials and issues discussed at the July 18th and 19th meetings Nalcor Energy Ontario Power Generation Workbench IESO Response to Stakeholder Feedback
August 13, 2018	Stakeholder Feedback on Market Power Mitigation AMPCO IESO Response to Stakeholder Feedback
August 1, 2018	Optimization of Energy Limited Resources
July 18-19, 2018 Agenda Minutes	Stakeholder Meeting Communication Presentation Market Power Mitigation Design Considerations Optimization of Energy Limited Resources Combined Cycle Plant Modelling Settlement Topics
June 21, 2018	Stakeholder feedback on materials and issues discussed at the May 23rd and 24th meetings ADG Group AMPCO APPrO – ERUC APPrO – MPM Consortium of Renewable Generators and Storage Providers DER AC HQ Energy Marketing MAG Energy - DAM MAG Energy – ERUC MAG Energy - SSM Ontario Power Generation IESO Response to Stakeholder Feedback
June 7, 2018	Webinar Invitation: MRP Energy Workstream - Intertie Transactions - Stakeholder Discussion Communication Stakeholder Feedback HQ Energy Marketing MAG Energy Ontario Power Generation
May 23-24, 2018 Agenda Minutes	Stakeholder Meeting Intertie Transactions Presentation Virtual Transactions Paper Market Power Mitigation Design Considerations Two Settlement and Make-Whole Design Scenarios
April 27, 2018	Feedback due on materials presented at the March 27 Market Power Mitigation meeting APPrO Capital Power Ontario Power Generation TransAlta IESO Response to Stakeholder Feedback
April 27, 2018	Feedback due on remaining preliminary decisions from the March 27 DAM meeting MAG Energy Solutions Ontario Power Generation IESO Response to Stakeholder Feedback
April 13, 2018	Feedback due on pre-approved operating restrictions (see slide 27 for details) from the March 27 DAM meeting Stakeholder Feedback APPrO Ontario Power Generation Powerful Solutions
March 27, 2018 DAM Minutes MPMI Minutes	Stakeholder Meeting Market Power Mitigation Design Considerations Presentation
February 28, 2018	Stakeholder Feedback APPrO HQ Energy Marketing Ontario Power Generation TransAlta Workbench Corp. IESO Response to Stakeholder Feedback
January 31, 2018 Agenda Minutes	Stakeholder Meeting Presentation
November 27, 2017 Agenda	Stakeholder Meeting – Design Elements Fundamentals: Market Power Mitigation, Price Formation, Settlements Presentation	Materials posted one week in advance of meeting Recorded Presentation
November 10, 2017	Stakeholder Feedback Ontario Power Generation Powerful Solutions IESO Response to Stakeholder Feedback
October 30, 2017 Agenda	Stakeholder Meeting Design Elements Fundamentals - 1	Recorded Presentation
October 11, 2017 Agenda	Stakeholder Meeting - Introduction to Engagement, High Level Overview of Design Elements and Scope Introduction to Day-Ahead Market	Recorded Presentation
September 28, 2017	Announce Engagement and Post Draft Stakeholder Engagement Plan Communication

Stakeholder Engagements

Day-Ahead Market Engagement

Schedule of Activities