PJM Will Require 24-Hour Demand Response Starting 2027
Businesses must automate curtailment systems to meet new round-the-clock availability rules for the PJM grid.
Updated on Oct. 12, 2026 in Utilities
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Starting June 1, 2027, PJM Interconnection will require demand response resources to be available at any hour of the year. This shift forces operators to prepare for continuous grid dispatch requirements during the 2027/2028 delivery year.
Why it matters
The change aligns demand response valuation with the performance expectations of power plants by ensuring consistent capacity across all hours. Businesses must now account for nighttime dispatch and stricter performance standards to qualify for capacity payments.
The 2027/2028 Base Residual Auction cleared 7,298.6 megawatts of capacity at $333.44 per megawatt-day. The new accredited value of 92% represents a significant increase from the previous 69% baseline.
The players
PJM Interconnection
A regional transmission organization that manages the movement of wholesale electricity in all or parts of 13 states and the District of Columbia.
Federal Energy Regulatory Commission
The independent federal agency that regulates the interstate transmission of electricity, natural gas, and oil.
The details
To comply with the new rules, facilities must automate curtailment sequences or provide 24-hour staffing to handle dispatch notices. Participants must respond to grid events within 30 minutes, and staffing constraints are no longer an acceptable excuse for delays. Additionally, PJM has updated its winter peak load calculation to focus on the hour ending 9 a.m. across five coincident peak days between December and February.
Timeline
March 2025: PJM submitted the demand response proposal.
May 5, 2025: FERC accepted the PJM proposal.
June 1, 2027: New 24-hour demand response rules take effect.
2027/2028 delivery year: Rules apply to initial capacity delivery.
Market Landscape
This mandate follows the capacity performance requirements set by the PJM Interconnection 2027/2028 Base Residual Auction capacity standards. It marks a shift toward standardizing demand response reliability with traditional power plant performance metrics.
Operators currently participating in demand response programs should review their site automation capabilities to meet the 30-minute response requirement. Plan for potential capital expenditures to replace manual staffing models with automated systems before the June 2027 deadline.
The takeaway
Reliability requirements are tightening to prioritize 24-hour grid availability over traditional business-hour scheduling. Audit your current load management response times and verify if your systems can support the 30-minute automated curtailment requirement by June 1, 2027.
Further reading
For more on evolving grid requirements, visit our Utilities section.
Source note: This article includes information reported by Environment+Energy Leader.
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