Changes to 18-Month Outlook (SE-19)

The challenges to maintain reliability of Ontario's bulk power system during the summer of 2005 that were related to high demands and lower hydroelectric generation have prompted changes to the calculation of supply adequacy for the purposes of reliability assessments. Specifically, the IESO is adjusting its forecasts for peak demand and hydroelectric capability to more accurately align with expected circumstances, particularly over peak periods, and to allow plans to be developed to ensure Ontario is better prepared.

The impact these changes will have on the calculation of supply adequacy is illustrated in the 18-Month Outlook reliability assessment published on March 24, 2006.

Stakeholder Engagement Plan (on hold)

For more information on this stakeholder initiative or to participate in the next meeting, email stakeholder.engagement@ieso.ca.

Date Agenda/Minutes	Supporting Material
To be determined	On hold pending possible further stakeholder requirements on the Required Reserve Calculation.
April 20, 2006 Agenda Minutes (with additional analysis)	Open stakeholder session to provide rationale for change and to invite stakeholder feedback. • Agenda and presentations Stakeholder Feedback: • OPG Feedback Feedback: • Summary of Session Feedback
March 28, 2006	Post stakeholder plan.
March 24, 2006	Issue 18 Month Outlook demonstrating current and new methodology.