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December 6, 2025

variable resource requirement (VRR) curve

PJM
IMM Report: PJM Capacity Auction Results not Competitive
The results of PJM’s 2022/23 Base Residual Auction were not competitive, according to a report released last week by the RTO’s Independent Market Monitor.
The Brattle Group
FERC Rejects PJM 10% Capacity Market Adder
FERC ordered PJM to remove the 10% cost adder for the reference resource used to establish the VRR curve in the RTO’s capacity market.
Shutterstock
PJM MIC Briefs: July 14, 2021
Stakeholders unanimously voted to amend PJM's issue charge addressing the calculation of regulation mileage ratio, asking the RTO for more time to discuss.
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.

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