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December 5, 2025

Transmission Planning

© RTO Insider LLC
SPP Celebrates Novel Consolidated Planning Process
SPP’s Board of Directors has approved a tariff change establishing an integrated, three-year transmission planning cycle that represents a “first-in-the-country” mechanism.
MISO and SPP
MISO, SPP Still on Hunt for Joint Transmission Under CSP
MISO and SPP appear undaunted in their pursuit of a beneficial interregional project after FERC’s rejection of exemptions to their joint study rules.
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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.
MISO
Five Republican States File FERC Complaint to Undercut $22B MISO Long-range Tx Plan
Five state public service commissions have banded together to request that FERC order a recasting of MISO’s long-range transmission projects, arguing the projects aren’t as beneficial as MISO has advertised.
Hanson Inc.
Ameren Argues Exclusive Rights to MISO Illinois Competitive Tx Projects
Ameren Illinois argued to FERC that it should have dibs on sections of two competitive long-range transmission projects worth almost $2 billion from MISO’s second portfolio, claiming Illinois’ “first in the field” doctrine is tantamount to a right of first refusal law.
© RTO Insider LLC
MISO Revising Transmission Futures After Repeal of Tax Credits
The federal government’s rollback of incentives for renewable energy has thrown a wrench into MISO’s work to develop four new transmission planning scenarios. 
NYISO
NYISO Presents Informational CAFs for Non-firm Generators
NYISO provided a glimpse into the possible capacity accreditation factors for gas generator units that have not guaranteed a supply of fuel for the winter capability period.
SPP
FERC Approves SPP’s ERAS Process, Accreditation
SPP is celebrating several recent FERC orders that have strengthened its resource adequacy framework that it says will secure a “reliable energy future” for its region.
Shutterstock
NYISO Cancels Offshore Transmission Studies
In the wake of the New York Public Service Commission’s decision to cease planning its offshore wind underwater transmission network, NYISO has followed suit, tossing two years of planning studies.
© RTO Insider LLC
SPP Strategic Planning Committee Briefs: July 17, 2025
SPP's Strategic Planning Committee has unanimously endorsed staff’s comprehensive approach to accelerate transmission capability, directing them and the RTO's working groups to prioritize the development of policies for all short-, mid- and long-term initiatives.

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