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December 5, 2025

ISO-NE

ISO New England Inc. is a regional transmission organization that oversees the operation of the electricity transmission system, coordinates wholesale electricity markets, and manages power system planning for the states of Connecticut, Rhode Island, Massachusetts, Vermont, New Hampshire, and most of Maine.
Shutterstock
Massachusetts Seeks 1,500 MW of Mid-duration Energy Storage
The Massachusetts Department of Energy Resources and the state’s investor-owned electric utilities have issued a request for proposals to procure up to 1,500 MW of mid-duration energy storage.
ISO-NE
ISO-NE: Resources Overperformed During June Capacity Scarcity Event
Pay-for-Performance credits accumulated during capacity scarcity conditions June 24 totaled about $114 million, ISO-NE's COO told the NEPOOL Participants Committee.
Constellation
NEPGA Seeks Relief for ‘Improper’ Pay-for-Performance Costs in ISO-NE

The New England Power Generators Association is seeking immediate action from FERC to address what it calls “serious flaws” in the design of ISO-NE’s pay-for-performance mechanism.

© RTO Insider 
Demand Growth Accelerating in the Northeast, Eversource Says
The pace of load growth has picked up across Eversource Energy’s service territories in the Northeast, the company said during its second-quarter earnings call.
ISO-NE
ISO-NE Analysis Details Benefits of Demand Flexibility
Increased demand flexibility could significantly reduce production costs, capital costs, and transmission costs in New England by better-aligning load with generation and reducing peak loads, ISO-NE said.
© RTO Insider 
Retiring ISO-NE CEO van Welie Reflects on 25 Years at the RTO

Retiring ISO-NE CEO Gordon van Welie discussed the changes he helped oversee during his time at the RTO, including the rise of gas generation and major investments in transmission infrastructure.

ISO-NE
NEPOOL Reliability/Transmission Committee Briefs: July 15-16, 2025
ISO-NE’s regional network service rate is set to decrease by about 1% in 2026, dropping from $185.28/kW-year in 2025 to $183.71/kW-year in 2026.
ISO-NE
NEPOOL Markets Committee Briefs: July 8-9, 2025

ISO-NE provided updates on its proposals for generator retirements, market power mitigation, and resource qualification and reactivation.

Shutterstock
Behind-the-meter Solar Shines in ISO-NE Capacity Deficiency Event

ISO-NE’s capacity deficiency event demonstrated the significant benefits of solar resources, along with their limits in displacing fossil resources during peak load periods.

Hydro-Québec
Drought, Climate Drive Uncertainty on New England Imports from Québec
The impending addition of new export commitments could pose a challenge for Hydro-Québec over the next few years if drought conditions persist.

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