Forecasts & Assessments

IESO 10-Year Monthly Load Capacity & Resources Assessment - Updated on June 30, 2026

• IESO 10-Year Monthly Load Capacity & Resources Assessments (PDF) - For 2027 to 2036

IESO 10-Year System Outlook Report - Updated on June 30 2026

• IESO 10-Year System Outlook Report (PDF) - For 2026

5 Year Assessment of the Maritimes Area - Updated on December 01, 2025

• Reviews of Resource Adequacy (NPCC Inc. web site)

18-Month Load and Capacity Forecast - Updated on March 13, 2026

• 18 Month Load and Capacity Forecast (PDF) - For March 2026 to October 2027

Annual Transmission Plan - Updated on December 17, 2025

• Annual Transmission Plan (PDF)