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December 5, 2025

ISO-NE Longer-Term Transmission Planning

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Collaboration Key to Energy Affordability, Say U.S. and Canadian Officials
Energy affordability and regional collaboration dominated talks at the New England-Canada Business Council's annual Executive Energy Conference.
ISO-NE
ISO-NE Provides More Detail on Responses to LTTP Procurement
ISO-NE published a summary of proposals submitted for its first longer-term transmission planning procurement, which is aimed at reducing transmission constraints.
ISO-NE
ISO-NE Reveals 1st Details of Long-term Transmission Proposals
ISO-NE received six proposals from four different companies in response to its request for proposals to address transmission constraints and interconnect onshore wind in Maine.
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With FERC Inaction, ISO-NE Delays Order 2023 Implementation
ISO-NE submitted its compliance to the commission in May, but FERC has yet to rule on the proposal, throwing a wrench in the RTO's implementation timeline.
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FERC Approves New Pathway for New England Transmission Projects
FERC approved ISO-NE’s proposal of a new process to solicit, select and allocate costs for transmission projects that address needs identified in long-term planning studies.
Potomac Economics
NEPOOL Holds Summer PC Meeting amid New England Heat Wave, Climate Protests
NEPOOL held its annual summer Participants Committee meeting in New Hampshire during a multiday stretch of extreme heat and high demand on the New England grid.
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Stakeholders Support ISO-NE Long-term Tx Planning Filing, with Caveats
Stakeholder groups submitted comments to FERC last week in support of ISO-NE’s proposal to create a new longer-term transmission planning process to facilitate more forward-looking transmission investments to meet looming needs.
ISO-NE
ISO-NE Details Order 2023 Tariff Changes
ISO-NE outlined key components of tariff changes it plans to comply with Order 2023, including cluster timelines and storage study assumptions.
ISO-NE
ISO-NE PAC Briefs: Dec. 20, 2023
Increased electrification and reliance on solar and wind will make electricity supply and demand more weather-dependent, resulting in more variable winter peak loads.
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ISO-NE Updates Longer-Term Tx Planning Proposal
ISO-NE provided additional information on the second phase of its Longer-Term Transmission Planning project, which is intended to facilitate transmission investments to meet the states’ policy goals.

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