Publications

Annual Planning Outlook

A long-term view of Ontario's electricity system, the IESO’s Annual Planning Outlook (APO) forecasts electricity demand, assesses the reliability of the electricity system, identifies capacity and energy needs, and explores the province’s ability to meet them.

Reliability Outlook (Current Report)

The Reliability Outlook presents Ontario's demand forecast and associated drivers, resource adequacy projects and the assumptions that inform them, as well as an assessment of operability and the province's transmission assets on a quarterly basis.

Power Perspectives: Today’s Challenges, Tomorrow’s Opportunities

Explores key issues and trends affecting Ontario’s electricity sector, including a Q&A with IESO President and CEO Peter Gregg, as well as articles that showcase the IESO’s role in enabling competition, facilitating innovation, enhancing resilience, building capacity in Indigenous communities and planning for the future.

Quarterly Contracted Supply  Report (Current Report)

The Progress Report on Contracted Electricity Supply provides a status of the IESO’s contracted generation capacity in both the Ontario transmission and distribution grids.