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December 5, 2025

Independent Market Monitor (IMM)

 © RTO Insider
MISO Board Orders More Detail into Monitor’s 2026 Budget
MISO’s Board of Directors has asked the RTO’s Independent Market Monitor to better explain its $10.6 million 2026 budget before it agrees to the amount.
© RTO Insider 
MISO IMM: Capacity Prices Efficient Despite Yearslong Error
MISO’s Independent Market Monitor said the recently uncovered, eight-year-old repeat error in the RTO’s capacity market that caused a $280 million impact in this year’s auction alone is unfortunate but insisted the resulting prices were efficient.
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PJM MIC Endorses 2 Quadrennial Review Proposals
The PJM Market Implementation Committee voted to endorse two packages of revisions to key parameters of the capacity market out of six offered by PJM and stakeholders that resulted from the Quadrennial Review.
PJM
PJM MRC/MC Briefs: Aug. 20, 2025
PJM’s Markets and Reliability Committee endorsed by acclamation a PJM proposal to rework how the RTO determines whether a new generation point-of-interconnection falls under federal or state jurisdiction.
© RTO Insider LLC
PJM Stakeholders Reject Proposals to Rework Accreditation
The Markets and Reliability Committee rejected three proposals to revise aspects of PJM’s effective load-carrying capability accreditation model.
LS Power
FERC Partly Grants Complaint on PJM Opportunity Cost Adders
FERC partly granted a complaint from LS Power challenging the calculation of opportunity cost adders, requiring operating agreement revisions.
Cleco
IMM: MISO Should Penalize Gen that Falls Flat on Emergency Output
The MISO Independent Market Monitor called on the RTO to develop a penalty system for generation for underperformance during emergencies.
Constellation Energy
FERC Approves Constellation Purchase of Calpine with Conditions
FERC approved Constellation's purchase of Calpine, which will create an even bigger IPP with nearly 60 GW around the country, with the biggest share of that in PJM.
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FERC Sides with Market Monitor over MISO in Compensation Dispute
FERC sided with MISO IMM David Patton, denying a petition from MISO that would have prevented the RTO from reimbursing the Monitor for reviewing the market impact of transmission planning.
MISO
IMM: NERC Reliability Assessment Still Overstating MISO Risk
MISO’s Independent Market Monitor has expressed lingering dissatisfaction with NERC’s Long-Term Reliability Assessment, even with potentially corrected values.

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