Sussex's Summary Analysis of the IESO 2021 Annual Planning Outlook

written by

Energy Team

Earlier today the Independent Electricity System Operator (IESO) released the 2021 Annual Planning Outlook (APO). The report provides details and insights on Ontario’s electricity system needs resulting from detailed demand forecasting looking out over the next 20 years.

The 2021 APO is the third such report released by the IESO and is now projecting an increase in electricity demand at a rate not seen in almost two decades. The anticipated growth of demand has led to a larger than originally anticipated capacity need beginning in 2023 for both summer and winter peak consumption periods, increasing over the remainder of the reference period between 2023 and 2042. A need for energy emerges towards the beginning of the 2030s.

Read the full analysis here.

No items found.

November 28, 2025

Canada and Alberta Sign Landmark Energy Collaboration MOU

Yesterday, the Government of Canada and the Government of Alberta have signed a major Memorandum of Understanding (MOU) outlining a joint plan to pursue common federal–provincial objectives.

November 20, 2025

Ford Government Prioritizes Buying Ontario First with New Legislation

This afternoon, Stephen Crawford, Minister of Public and Business Service Delivery and Procurement, introduced the Buy Ontario Act, which mandates the prioritization of Ontario goods and services first by all public sector organizations, municipalities and contractors and subcontractors working on the government’s $220 billion capital plan.

November 6, 2025

A Measured Update Ahead of a Defining Fiscal Milestone

The Ontario government’s 2025 Fall Economic Statement (FES) includes two key themes: Protecting Workers and Businesses and Building a Competitive Economy.

view all

RECENT POSTS

Canada and Alberta Sign Landmark Energy Collaboration MOU

Ford Government Prioritizes Buying Ontario First with New Legislation

A Measured Update Ahead of a Defining Fiscal Milestone