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May 22, 2025

interregional transmission planning

© RTO Insider
State Officials in the Northeast Discuss Interregional Transmission Plan
Officials from members of the Northeast States Collaborative on Interregional Transmission expounded the group’s strategic action plan.
NERC
NERC Finds Growing Shortfall Risk in Canada
The Canadian supplement to NERC's Interregional Transfer Capability Study recommended 14 GW of additional transfer capability in the country, mostly in Quebec.
The Brattle Group
Plan Lays out Steps for State-led Interregional Transmission in Northeast
The Northeast States Collaborative on Interregional Transmission released a strategic action plan for creating an interstate planning process for transmission projects that span the seams of their grid operators.
MISO and PJM
MISO, PJM Forgo Typical Interregional Studies for Novel Transfer Work
MISO and PJM will not take on customary interregional planning studies this year, deciding they have enough on their plates with a new and in-progress joint transfer study.
Resources for the Future
Report Estimates Billions in Savings from More Interregional Transmission
Authors of a new report say better market integration and reduced interregional constraints in the U.S. transmission network would have saved as much as $12 billion in 2022 and 2023.
MISO, SPP
MISO, SPP Solicit Feedback on Joint Transmission Studies
MISO and SPP staff asked for input on a joint system study in 2025 during their annual transmission issues evaluation with their Interregional Planning Stakeholder Advisory Committee, which was only too happy to comply.
RMI
RMI Argues Regionally Planned Transmission Leads to Unexpected Benefits
Major regional and interregional transmission lines might be big investments, but they tend to produce more benefits than expected, RMI said in a report. 
SPP
MISO, SPP to Revise Joint Agreement, Focus on TMEP Process in 2025
MISO and SPP staff told stakeholders that they will not perform a Coordinated System Plan in 2025 but will accept transmission issues for their annual review early in the year.
NERC
NERC Files ITCS to FERC, Meeting Congress’ Deadline
NERC filed the completed Interregional Transfer Capability Study to FERC ahead of the December deadline set by Congress in the Fiscal Responsibility Act of 2023.
SPP
FERC Approves JTIQ Framework, Cost Allocation
FERC approved tariff revisions and modifications to the joint operating agreement between MISO and SPP that will enshrine a structural and cost-allocation framework for the five projects in their Joint Targeted Interconnection Queue portfolio.

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