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December 20, 2025

interregional transmission planning

MISO Stakeholders Give Go-Ahead on SD Interregional Project
The first MISO-SPP interregional project inched closer to reality Thursday with a vote of confidence from the MISO Planning Advisory Committee.
1 Project Recommended for MISO-SPP Coordinated Plan
Just one project from MISO and SPP’s coordinated system plan study will move forward for individual votes on regional review.
MISO, PJM See No Joint Reliability Projects; Evaluating MEPs
MISO and PJM will entertain proposals for interregional reliability projects even though none of the 19 planned reliability upgrades offer opportunities for collaboration.
MISO-SPP Coordinated Study Yields 1 Possible Project – For Now
Preliminary results of the MISO and SPP '16 coordinated system study are in, and the RTOs say one project has potential, but it fails MISO’s cost threshold.
SPP Briefs
The odds of SPP and MISO conducting a second joint study dropped as the RTOs’ reviews are not lining up. Plus the Z2 Task Force is narrowing alternatives.
PJM Planning Committee and TEAC Briefs
PJM stakeholders discussed revisions to its targeted market efficiency project process with MISO and a solution to the hazard at PSE&G's Newark substation.
Southwest Power Pool Briefs
The SPP Seams Steering Committee welcomed two new members, while the RTO set another record for wind generation.
PJM Considering Expansion of Spot-in Tx Solution to All Borders
PJM held a special session of the MIC on Wednesday, where stakeholders debated implementing unlimited service along the NYISO-PJM seam.
SPP Briefs
Southwest Power Pool and MISO continue to study seven potential joint transmission projects across their seam. Next: developing the 2017 joint study.
© RTO Insider
MISO Planning Subcommittee Briefs
MISO told its Planning Subcommittee that it and PJM are not optimistic that they can use common assumptions in their interregional transmission planning.

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