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December 20, 2025

Ancillary Services

© RTO Insider LLC
NYISO Meeting Briefs: Nov. 3-4, 2025
NYISO presented the results of Phase 1 of the 2024 Cluster Study process at a special Operating Committee meeting.
Nvidia
Nvidia, Emerald AI, EPRI and PJM Announce Flexible Data Center Project
The artificial intelligence industry and power industry are working together to develop the first “power-flexible AI factory” at a 96-MW facility in Manassas, Va.
MISO
MISO Predicts 103-GW Peak for Winter
MISO said even a 109-GW peak this winter shouldn’t prove problematic, though a more probable scenario would deliver a 103-GW peak in January.
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Patton Calls on ERCOT to Operate its System Less Conservatively
ERCOT can ensure long-term reliability with its energy-only market, but it must operate its grid less conservatively for that to happen, said Potomac Economics President David Patton.
ERCOT
Large Loads Slow to Interconnect in ERCOT
ERCOT's Technical Advisory Committee discussed the grid operator's approach to large loads, as staff said they are tracking over 200 GW in large-load interconnection requests.
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PJM MIC Briefs: Oct. 9, 2025
The PJM Market Implementation Committee endorsed a package of revisions to Manual 18.
MISO
MISO Mulling New Way to Convey Spate of Advisories in South
MISO is contemplating a better way to communicate generation shortfalls in its Southern load pockets than continuing to send out repeat capacity advisories. 
ISO-NE
ISO-NE Publishes Draft 2026 Work Plan
Capacity auction reforms, a new asset condition reviewer role, parallel transmission planning efforts, new reserve products, Pay-for-Performance changes and interconnection modifications are likely to be on the docket for ISO-NE in 2026.
Mid-America Carpenters Regional Council
D.C. Circuit Vacates FERC Cancellation of Reactive Power Compensation in MISO
The D.C. Circuit Court of Appeals vacated a FERC order allowing MISO to end reactive power compensation, though the decision has no bearing on the nationwide discontinuation of payments for reactive power in Order 904.
ERCOT
ERCOT Board Approves AS Procurement for 2026
ERCOT’s Board of Directors approved staff’s recommended methodologies for acquiring minimum ancillary service requirements in 2026, despite concerns over conservative operations and target procurement levels.

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