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December 6, 2025

PJM Market Implementation Committee (MIC)

Intermittent Resources Task Force Has New Assignment
The PJM Intermittent Resources Task Force will consider ways to implement recommendations of the recently completed PJM Renewable Integration Study.
Superstorm Sandy Stirs Change to Zonal Base Load Definition
Stakeholders approved a rule change to the PJM zonal base load definition so that zones don’t lose Auction Revenue Rights due to anomalies caused by storms or other extraordinary events.
DR Measurement and Verification to Be Examined
Stakeholders approved two initiatives to improve demand response measurement and verification.
Members Split Over Change in Reserve Procedures
Stakeholders split last week over a PJM proposal to change how the RTO captures the cost of deploying additional reserves during extreme weather.
Coding Errors Leads to $89 Million Resettlement
PJM will resettle $89 million in bills due to logging errors that overcharged LSEs in the eastern portion of PJM during the polar vortex.
PJM, MISO Consider Interchange Optimization
PJM is proposing a MISO scheduling product similar to the PJM-NYISO CTS solution that has conditional FERC approval to facilitate interchange optimization.
Rule Changes Clarify Synch Reserve Aggregation
PJM Stakeholders endorsed rule changes to clarify that generation owners providing Tier 2 synchronized reserves will be measured in the aggregate when PJM evaluates their performance under a new penalty structure.
PJM-IMM Plan on FMUs Faces Generator Opposition
PJM and the IMM have reached agreement on a way to reduce the number of Frequently Mitigated Units eligible for “adders” but their proposal faces heavy opposition from generation owners.
PJM Drops Interchange Ramp Plan
PJM has dropped a plan that would have allowed dispatchers to cut interchange ramp limits in order to reduce price volatility and uplift.
PJM Seeks Better Data on Residential DR
Stakeholders will attempt to develop more accurate measurement and verification of residential DR under a problem statement approved by the MIC.

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