Search
February 21, 2026

Independent Market Monitor (IMM)

© 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.
© RTO Insider 
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.
Shutterstock
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.
Shutterstock
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.
© RTO Insider
PJM Market Monitor Publishes Mixed Views in Annual Report
PJM’s markets provided reliable service in 2024, but tightening supply and demand are laying bare design flaws that have inhibited the competitiveness of the RTO’s markets, the Independent Market Monitor wrote in its 2024 State of the Market Report.
© RTO Insider 
MISO Intent on Answers as to IMM Role in Tx Planning
MISO confirmed it’s taking steps to get answers from FERC about the role the Independent Market Monitor should have — if any — in transmission planning.
© RTO Insider LLC 
MISO: Better Preparations Clinched Winter Storm Operations
MISO emerged from winter 2024/25 without turning to emergency procedures despite wide-ranging winter storms Jan. 6-9 and again Jan. 20-22.

Want more? Advanced Search