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.
IESO
IESO Seeks Input on RFP for 3rd Toronto Transmission Line
IESO is seeking stakeholder input on its first competitive transmission solicitation: a $1.5 billion HVDC line under Lake Ontario that will become the third major supply line for Toronto.
IESO
IESO Holds Firm on Hydro Exclusion, Reserve Price in Long Lead-time RFP
IESO officials held firm on excluding hydro redevelopment projects from the ISO’s Long Lead-Time procurement despite objections from potential bidders.
NERC
IESO Reliability Compliance Plan Focuses on CIP, Modeling, IBRs
IESO is targeting six areas of NERC’s Reliability Standards in its 2026 compliance program, largely continuing a focus on issues it has prioritized since 2023.
Government of Canada
Canada’s Emission Reductions Dependent on Fixing Industrial Carbon Markets
After scrapping most Trudeau-era climate policies, Prime Minister Mark Carney wants to tighten rules over Canada’s industrial carbon markets, which observers say have failed to incentivize emission reductions.
IESO
Ontario OKs Underwater HVDC Line to Toronto
Ontario approved IESO’s proposed $1.5 billion HVDC line under Lake Ontario, which planners say is needed to meet a potential doubling of Toronto’s electricity demand by 2050.
Hydro One
IESO Sees 2026 Demand Cooling from ‘Trade Tensions’
IESO's latest Reliability Outlook reduces its 2026 demand growth projection slightly, citing “international trade tensions.”
IESO
IESO Seeks Comment on Revised Monitoring Requirements
IESO released proposed market rule and manual revisions to require synchrophasor data from storage resources.
New York Governor's Office
N.Y., Ontario Collaborating on Nuclear Power Development
NYPA and OPG will share information, resources and institutional knowledge to support the economic, technology and workforce initiatives needed for advanced nuclear development on both sides of the border.
Highview Power
IESO Drops Termination Option for Long Lead-time RFP

Responding to opposition from suppliers, IESO said it will not include a termination option in its procurement for long lead-time resources.

Power Advisory
Big Jump in Ontario Capacity Prices Signals Tightening Supplies
IESO says record-high clearing prices in its capacity auction will have little impact on ratepayers because the ISO's medium- and long-term procurements play a larger role in the region’s resource adequacy.

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