January 22, 2025

variable resource requirement (VRR) curve

Monitor Sees Problems with PJM Reserve Pricing Plan
Independent Market Monitor Joe Bowring said PJM’s proposed revisions to how it prices reserves necessitates changes in the capacity market.
© RTO Insider
PJM MRC/MC Briefs: Sept. 27, 2018
The MRC voted on four packages of revisions as part of PJM’s quadrennial review of the VRR curve, but none of the proposals received majority support.
© RTO Insider
PJM Market Implementation Committee Briefs: Sept. 12, 2018
PJM staff have incorporated stakeholder input into their recommendations resulting from the quadrennial review of the VRR demand curve.
© RTO Insider
PJM MRC/MC Briefs: Aug. 23, 2018
The PJM Markets and Reliability Committee agreed to a one-year delay in adding cost-containment measures to the RTO’s transmission planning process.
© RTO Insider
PJM Market Implementation Committee Briefs: Aug. 8, 2018
The Market Implementation Committee overwhelmingly endorsed PJM’s proposal for revising how it calculates the balancing ratio.
Factors in New PJM VRR Curve Still in Question
PJM has altered one of its recommended revisions to its capacity auction demand curve in response to stakeholder pressures.
This graph from PJM shows how much of an impact on the load forecast in different transmission zone varying percentages of peak shaving would have.
Plan Would Reduce PJM Capacity Curve Through Peak Shaving
PJM hopes to reduce its capacity market demand curve by including peak shaving among the variables used to develop its load forecast.
PJM to Consider Revisions to Demand Curve Design
When stakeholders begin considering potential changes to PJM’s demand curve next month, one of the main debates will likely center on whether combustion turbines should remain the reference technology for estimating the cost of new entry be replaced by combined-cycle gas turbines.
FERC Upholds PJM’s Capacity Market Parameters
PJM said the changes to the variable resource requirement curve and related pricing inputs were necessary to meet evolving market conditions.
FERC Denies IMEA Request for Extended Waiver on Capacity Obligation
FERC rejected a request from IMEA for an extended waiver that would allow it to use capacity resources outside of the ComEd LDA to meet its internal resource requirement in serving its load.

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