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March 10, 2026

Transmission Planning

Great River Energy
Stakeholders Suggest Cost Overruns Ubiquitous as MISO Reviews Long-range Tx Project
Stakeholders told MISO it might have anticipated an impending cost increase for a long-range transmission project in the works in Minnesota that jumped about 43% in price to nearly $1.4 billion.
NERC
Could the U.K.’s Cap-and-Floor Model Unlock Interregional Tx in the U.S.?
The United Kingdom has found success with a cap-and-floor model for transmission where interconnectors to other countries are guaranteed minimum revenues, but return earnings over the cap to customers.
City of Seattle
Conditional Firm Service Offers Way out of BPA’s 61-GW Queue, City Light Says
Seattle City Light presented its proposal for the Bonneville Power Administration’s overhaul of the transmission planning process, saying the agency should offer interim conditional firm service to most developers in the 61-GW transmission service queue.
© RTO Insider LLC
SPP’s MOPC Adds Conditional IC Process for Large Loads
SPP stakeholders have overwhelmingly endorsed a conditional interconnection process for large loads that will be paired with two other FERC-approved processes.
Amazon
FERC Approves SPP Large Load Interconnection Process
FERC approved SPP tariff additions that deploy novel study processes to quickly review requests for “high-impact” large loads seeking to interconnect to its system.
© RTO Insider LLC
BPA Tx Planning Overhaul Prompts Concern for Northwest Clean Energy Compliance
Some of the Bonneville Power Administration’s proposals aimed at resuming transmission planning processes risk pushing study timelines to the point where the agency’s customers could run afoul of clean energy targets in Washington and Oregon, stakeholders say.
© RTO Insider
PJM Presents RTEP Assumptions, $11.6B Package
The Organization of PJM States Inc. presented PJM's Transmission Expansion Advisory Committee with a set of assumptions for the RTO's planning process reflecting state legislation and policies.
Dominion Energy
PJM PC/TEAC Briefs: Jan. 6, 2026
PJM stakeholders endorsed an expanded dual fuel manual definition, and the Transmission Expansion Advisory Committee was presented with a list of supplemental projects.
AEP
MISO Picks AEP, Berkshire’s Joint Venture to Build $1.2B 765-kV Line
MISO selected a 50/50 joint venture between Transource and Berkshire Hathaway Energy Transmission to build a $1.2 billion, 765-kV project from the RTO’s second long-range transmission portfolio.
Balise42, CC BY-SA 4.0, via Wikimedia Commons
CAISO Looks to Remove Stagnant Projects from Interconnection Queue
CAISO has proposed new interconnection criteria to flush out stale projects from a generator interconnection queue that has reached record volumes in recent years.

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