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February 21, 2026

day-ahead ancillary services market

© RTO Insider
ISO-NE CEO Chadalavada Talks Winter Operations, Market Reform
Just a few weeks after taking over as CEO of ISO-NE, Vamsi Chadalavada faced a trial-by-fire introduction to the job.
ISO-NE
ISO-NE Starts Work on Day-ahead Ancillary Services Market Changes
With costs associated with ISO-NE’s new day-ahead ancillary services market far exceeding expectations, the RTO is working to fast-track changes to improve the efficiency of the market in time for next winter.
© RTO Insider LLC
Prolonged Cold Drove Record Monthly Energy Costs in New England
New England experienced record high energy costs in the month of January amid cold weather, high gas prices and a heavy reliance on oil-fired generation.
ISO-NE
Costs of ISO-NE Day-ahead Ancillary Services Higher than Expected
ISO-NE’s new day-ahead ancillary services market added about $258 million in incremental costs between March and August, equal to 7.6% of total energy market costs.
© RTO Insider LLC
NEPOOL Supports First Phase of ISO-NE Capacity Market Reform
The NEPOOL Participants Committee voted nearly unanimously to support the first phase of ISO-NE’s capacity auction reform project.
State of Massachusetts
FERC Approves ISO-NE’s Day-Ahead Ancillary Services Initiative
FERC approved ISO-NE’s proposal to create a day-ahead ancillary services market and retire the current Forward Reserve Market, effective March 1, 2025.
ISO-NE
NEPOOL MC Gives OK to Inventoried Energy Program Tweaks
NEPOOL's Markets Committee approved changes to the Inventoried Energy Program intended to get the winter reliability program in line with global energy markets.
Fletcher, CC BY-SA 4.0, via Wikimedia Commons
ISO-NE Outlines More of Plans for Capacity Accreditation, DA Ancillary Services
ISO-NE continued to elaborate its proposed methods for de-rating gas resources in the winter, when there may be challenges getting fuel.

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