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December 5, 2025

day-ahead market (DAM)

IESO
IESO Implementing ‘True-up’ on Renewed Market Rules
After more than six months of operations under its Market Renewal Program, IESO is implementing “non-substantive” rule changes it says will improve clarity and alignment.
© RTO Insider 
PJM MRC/MC Briefs: Oct. 23, 2025

PJM’s Markets and Reliability Committee endorsed by acclamation a proposal to use only cost-based offers for resources committed in advance of the day-ahead energy market.

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 Nodal Market Operating as Expected at 1-month Mark

Ontario’s nodal market is showing promise one month after its launch, with improved price certainty, increased day-ahead trading and LMPs reflecting expected congestion patterns, IESO officials say.

IESO
Around the Corner: Nobody Does Capacity Quite Like Ontario
The move was a big step for IESO, and one of the biggest tweaks to its market design in years.
Yes Energy
Ontario Introducing Nodal Market May 1
IESO is scheduled to launch its new nodal market May 1, a change it says will save Ontario $700 million over the next decade through reduced out-of-market payments and increased efficiency.
IESO
FAQs: Ontario’s Shift to a Nodal Market
Yes Energy's Emily Merchant provides answers to some frequently asked questions about IESO's new nodal market.
© RTO Insider LLC 
BPA Close to Issuing New Long-term Power Contract
The Bonneville Power Administration kicked off the last public contract development workshop series under its "Provider of Choice" initiative, allowing stakeholders to provide input on the agency’s long-term power contracts that it will issue later this year.
PSEG
Stakeholders Skeptical of NYISO Performance Penalty Proposal
NYISO stakeholders expressed skepticism of an ISO proposal to levy financial penalties against underperforming generators, saying it was not developed enough to be voted upon by the end of the year. 
NYISO
NYISO CEO Previews 2024 After ‘Successful’ 2023
NYISO CEO Rich Dewey highlighted efficiency improvements and the challenges of the continued electrification at the Jan. 31 MC meeting.

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