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December 21, 2025

Transmission Planning

© RTO Insider LLC
MISO Says Overloads and Congestion Loom Without 2nd Long-range Tx Portfolio
After completing its initial economic and reliability analysis, MISO has found numerous overloads and congestion await its system if it doesn’t recommend a second long-range transmission plan portfolio.
NYISO
NYISO Stakeholders Advance Rules on Ambient Ratings, Internal Controllable Lines
NYISO members approved new rules for ambient line ratings and HVDC lines.
Shutterstock
Northeast States Detail Early Efforts on Interregional Tx Collaborative
Representatives from states working on the Northeast States Collaborative on Interregional Transmission spoke about the young effort, particularly about offshore wind connections.
NREL
Will DOE’s Transmission Needs Study Spur New Regional, Interregional Lines?
The study is intended to identify pressing transmission needs without offering specific solutions or taking into account federal and some state regulations.
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FERC Approves PJM RTEP Projects over State Protests
The 25 projects in PJM's Regional Transmission Expansion Plan include a $796 million immediate-need project to address Brandon Shores' looming deactivation.
DOE
CAISO Pursuing Approval of New Line to Tap Idaho Wind
CAISO is moving quickly to gain approval for a proposed transmission line that would allow California to meet targets for tapping Idaho wind resources while helping both states bolster their resource adequacy.
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SPP ‘All Over’ Addressing Resource Adequacy
The Resource and Energy Adequacy Leadership (REAL) Team, a cross-section group of regulators, directors and stakeholders, is the answer to SPP's No. 1 strategic priority: resource adequacy.
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MISO Shelves IMM’s Transmission Planning Recommendation in State of the Market Report
MISO plans to handle four of the five recommendations from the Independent Market Monitor’s State of the Market report, putting on hold a recommendation regarding transmission planning.
PSEG
PJM PC/TEAC Briefs: Oct. 31, 2023
PJM stakeholders OK'd a manual change necessitated by the growth of data centers and heard reviews of multiple supplemental transmission projects.
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PJM Recommends $5B in RTEP Transmission Projects
PJM has presented a package of transmission projects to address growing data center load and several generation retirements. The proposal, which requires Board of Managers approval, would fulfill the 2023 RTEP Window 3.

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