Search
December 5, 2025

IESO

Ontario’s Independent Electricity System Operator is a government organization with a mixture of commercial and public-policy goals, owned by the government of Ontario. It was created to prepare for deregulation of the province’s electrical system and is governed by a board whose directors are appointed by the provincial government.
Oxford Properties
Stakeholders Press IESO on Governance, Transparency
IESO’s plan to give its staff authority to set market parameters without approval by the Board of Directors has sparked a debate over the ISO’s governance and the role of stakeholders.
IESO
Planners Pick $1.5B Underwater HVDC Line for Toronto’s ‘Third Supply’
IESO system planners recommended the construction of a $1.5 billion HVDC line to meet Toronto’s growing energy needs, saying it would be more “future proof” than two cheaper options.
Corre Energy/Long Duration Energy Storage Council
IESO Ups Capacity Target for Long Lead-Time Resources

IESO has increased the capacity target for its planned solicitation for long lead-time resources, even as it acknowledges questions about the need for the procurement.

GE Hitachi and Ontario Power Generation
Ontario Environmentalists Slam New Nuclear Units

Ontario environmental groups panned the Canadian government’s inclusion of small modular reactors among infrastructure projects selected to receive fast-track regulatory treatment, saying renewables would be a far cheaper way to expand generation capacity.

Ontario Energy Board Market Surveillance Panel State of the Market Report 2023
Ontario Market Monitor Revamps Techniques for IESO Nodal Market
Ontario’s energy regulator is learning new ways to identify inefficiencies and malign behavior under IESO’s Market Renewal Program.
Enbridge Gas Distribution and Storage
Ontario Govt. Moves to Tighten Grip on OEB, IESO
Ontario’s Progressive Conservative government continues to put its stamp on the province’s energy policy, proposing legislation that would add “economic growth” to the missions of IESO and the Ontario Energy Board.
Ontario Energy Board
Ontario Energy Board Plans 22% Spending Increase
The Ontario Energy Board plans a 22% increase in its 2025/26 budget with the addition of 32 employees, its biggest hiring surge in at least five years.
IESO
Stakeholders Frustrated by Lack of Details on Toronto DSM Study

IESO officials say they will release more information on how the ISO constructed its study of the potential for incremental energy savings in Toronto after stakeholders complained they lack enough details to comment meaningfully.

IESO
Ontario Nodal Market Nearing ‘Steady State’ After Nearly 4 Months
IESO officials say they are shifting from correcting implementation problems to seeking structural improvements in their nodal market.
IESO
Ontario to Expand Industrial Energy Efficiency Program

IESO will expand its industrial demand-side management program, increasing funding and allowing both larger and smaller participants than currently permitted.


Want more? Advanced Search