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June 22, 2025

Independent Market Monitor (IMM)

© RTO Insider
NERC Responds to MISO IMM’s LTRA Criticism

NERC acknowledges it used mismatched data to calculate MISO's risk level in its Long-Term Reliability Assessment and plans to release a revised report soon.

© RTO Insider LLC
MISO IMM Contends he Should Have Role in Tx Planning Oversight

The MISO Independent Market Monitor insisted to FERC that MISO’s own rules allow him to assess transmission. Market monitors of other grid operators backed him up.

Potomac Economics
ERCOT ESRs, Solar Production Lessen AS Costs

Energy storage resources and solar capacity helped reduce ancillary services costs and tight system conditions in the ERCOT market during 2024, according to a recent market report.

© RTO Insider 
MISO IMM Blasts NERC Long-term Assessment, Says RTO in Good RA Spot
MISO Monitor David Patton called NERC’s Long-Term Reliability Assessment inaccurate for labeling the RTO a high-risk area.
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MISO IMM to State Regulators: Good Intentions Behind LRTP Criticism
MISO Independent Market Monitor David Patton addressed the recent controversy surrounding his longstanding criticism of MISO’s latest, $22-billion long-range transmission portfolio at the Organization of MISO States’ Resource Adequacy Summit.
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FERC Approves PJM-Pa. Agreement on Capacity Price Cap, Floor
FERC approved a PJM proposal to limit capacity prices to between $175 and $325/MW-day for the next two Base Residual Auctions, resolving a complaint from Pennsylvania Gov. Josh Shapiro.
Potomac Economics
IMM Praises MISO for Fewer Out-of-market Actions
After years of its Independent Market Monitor critiquing MISO for making too many out-of-market actions to tame congestion, the IMM congratulated the RTO for dramatically reducing such actions.
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PJM Receives 94 Applications for Expedited Interconnection Process
PJM received 94 submissions from generation owners seeking to have new projects or uprates to existing units included in the RTO’s expedited Reliability Resource Initiative interconnection study process.
Constellation Energy
Constellation-Calpine Merger Draws Protests over Market Power Concerns in PJM
FERC received several protests to Constellation's proposed purchase of Calpine, with PJM's Monitor arguing the companies need to make additional commitments to preserve competition in the RTO.
© RTO Insider
PJM Stakeholders Endorse Proposals to Rework ELCC Accreditation
PJM’s Markets and Reliability Committee endorsed two proposals to revise the RTO’s ELCC formula to add two new generation categories and limit the penalties resources face if their accreditation declines between auctions.

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