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December 5, 2025

Transmission Planning

London Economics International
WIRES Report Includes Survey on Industry’s Views of Advanced Tx Tech
WIRES Group released a report looking into advanced transmission technologies and how they can help cost-effectively expand the transmission grid.
CAISO
Calif. Energy Officials Ponder Interconnection Timelines, Load Uncertainty
California energy officials are recognizing the need to work together to prioritize a long list of transmission and distribution interconnection projects as the state’s load growth accelerates due to expected data center development.
Invenergy
DOE Environmental Review of Grain Belt Express Devalues Line’s Carbon-cutting Ability
Drafted during a different presidential administration, the Grain Belt Express’ final environmental impact statement downplays the potential environmental benefits of the line.
© RTO Insider LLC
July Heat Wave Update, PJM OC Briefs: Aug. 7, 2025

PJM’s Kevin Hatch presented an update on how two heat waves between July 14-17 and 23-30 affected PJM operations, which involved multiple demand response deployments and emergency alerts and advisories.

© RTO Insider LLC
Interim Deliverability Proposal, PJM PC/TEAC Briefs: Aug. 5, 2025
To increase its energy supplies, PJM proposes expanding its process for allowing new resources to inject onto the grid while their required network upgrades are being completed, allowing a unit to operate partially.
ITC Midwest
CREPC TC Issues 1st Cost Allocation Study
CREPC TC, in collaboration with Energy Strategies, issued its first transmission cost allocation study to provide the Western electricity industry with guidelines on how to tackle the thorny issue.
© RTO Insider 
SPP Board of Directors/Members Committee Briefs: Aug. 5, 2025
SPP approved its seventh competitive project under FERC Order 1000, a 19-mile, 115-kV new transmission line with an estimated cost of $45.5 million in the Texas-New Mexico area.
© RTO Insider 
SPP Board Sets Aside 765-kV Costs, Large Load Policy
SPP’s Board of Directors agreed to defer action on a 765-kV transmission project with a ballooning cost estimate and staff’s large load integration policy, both the source of much stakeholder discussion.
ITC Holdings
FERC Approves SPP Change to IC Interim Service
FERC approved an SPP tariff change that allows interconnection customers without a pending request to ask for interim service when the study cluster’s window is closed.
ITC and ATC
MISO Requests Month to Respond to States’ Long-range Tx Complaint
MISO asked FERC for a month to prepare a defense of its second long-range transmission portfolio, which is being challenged by five state commissions in the footprint.

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