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December 5, 2025

capacity supply obligation (CSO)

COOKFOX Architects
Developer in ISO-NE Hit with FERC Fine for Capacity Market Fraud
The company behind a Massachusetts gas plant agrees to pay a $17 million penalty and hand back $26 million in profits after FERC found that it misled ISO-NE.
Fletcher, CC BY-SA 4.0, via Wikimedia Commons
FERC Investigating ISO-NE over Gas Plant’s Alleged Capacity Market Fraud
FERC is investigating ISO-NE’s role in alleged fraud by a project developer taking part in the RTO’s capacity market, the grid operator disclosed.
ISO-NE Asks Court for an Out as Killingly Uncertainty Balloons
ISO-NE asked the D.C. Circuit to undo its order keeping the Killingly capacity supply obligation alive and holding up the results of the capacity auction.
NTE Energy
Killingly Stays Alive After DC Circuit Halts FERC’s Termination Order
The order complicates ISO New England's capacity auction scheduled for Monday. 
© RTO Insider LLC
FERC Denies NTE’s Last-ditch Effort on Killingly
FERC denied NTE's request for a stay of its order approving ISO-NE's termination of the capacity supply obligation for the company's Killingly plant.
NTE Energy
FERC Accepts ISO-NE Request to Terminate Killingly CSO
FERC accepted ISO-NE’s request to terminate the capacity supply obligation for the Killingly Energy Center in eastern Connecticut.
ISO-NE
NE Stakeholders Propose Retirement, Financial Assurance Changes
The NEPOOL Markets Committee will vote in January on two proposals to modify ISO-NE’s generator retirement rules.
ISO-NE
ISO-NE Seeks to Terminate CSO for Conn. Power Plant
ISO-NE asked FERC to terminate the capacity supply obligation for the 650-MW gas-fired Killingly Energy Center in eastern Connecticut.
Crispins C. Crispian, CC BY-SA-4.0, via Wikimedia
NEPOOL Stakeholders Discuss Transition Mechanisms for MOPR
NEPOOL stakeholders and ISO-NE continue to work on eliminating the MOPR from the capacity market, discussing multiple proposals on transitional mechanisms.
Shutterstock
ISO-NE, NEPOOL Continue to Conceptualize Capacity Market Sans MOPR
ISO-NE and NEPOOL kicked off a two-day meeting with a session strictly devoted to discussing removing the MOPR from the capacity market.

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