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December 5, 2025

capacity supply obligation (CSO)

Invenergy
FERC Ends Clear River CSO, Denies Invenergy Waiver
FERC granted ISO-NE’s request to terminate the capacity supply obligation (CSO) for Invenergy’s delayed 485-MW Clear River Energy Center Unit 1.
NEPOOL OKs Penalty for Delayed Capacity Resources
NEPOOL approved new penalties for ISO-NE participants that fail to cover their capacity supply obligations when a new resource is delayed.
Stuart B. Millner & Associates (SBMA)
FERC Approves New Hampshire Capacity Settlement
Wheelabrator Technologies will refund ISO-NE capacity payments and pay a $250,000 civil penalty under a settlement approved by FERC.
Invenergy
ISO-NE Asks FERC to End Clear River CSO
ISO-NE asked FERC to terminate the capacity supply obligation of the Invenergy Clear River Energy Center Unit 1 combined cycle plant in Burrillville, R.I.
FERC OKs New ISO-NE Bilateral Capacity Trades
FERC accepted ISO-NE’s proposed annual reconfiguration transaction and a revised materiality threshold.
FERC Grants Deadline Waiver for New Hampshire Generator
FERC granted a waiver request from Public Service Company of New Hampshire (PSNH), allowing ISO-NE to accept its restoration plan for the Lost Nation generating unit.

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