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December 7, 2025

Transmission

© RTO Insider LLC
SPP MOPC Briefs: July 15-16, 2025
SPP stakeholders resoundingly rejected a proposed tariff change to integrate large loads, pushing back against what some say is a rushed process outside of the normal stakeholder structure.
© RTO Insider
FERC Sides with Market Monitor over MISO in Compensation Dispute
FERC sided with MISO IMM David Patton, denying a petition from MISO that would have prevented the RTO from reimbursing the Monitor for reviewing the market impact of transmission planning.
Grid Strategies
Report Calls U.S. Transmission Buildout Inadequate
A new study warns the United States is not building anywhere near enough high-voltage transmission to support the anticipated needs of the evolving economy.
IESO
Canadian Utilities Push Action on Net-zero Goals, Tax Credits
Canada’s utilities are encouraged by the country’s new government but say legislation to fast-track high-priority infrastructure projects doesn't address needs for permitting reform and more flexible clean energy targets and investment tax credits.
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Retiring ISO-NE CEO van Welie Reflects on 25 Years at the RTO

Retiring ISO-NE CEO Gordon van Welie discussed the changes he helped oversee during his time at the RTO, including the rise of gas generation and major investments in transmission infrastructure.

© RTO Insider
SPP ‘Blazes Trail’ with Consolidated Planning Process
SPP stakeholders unanimously approved a tariff change that replaces current planning processes with an integrated three-year cycle composed of long-term and annual studies.
ISO-NE
NEPOOL Reliability/Transmission Committee Briefs: July 15-16, 2025
ISO-NE’s regional network service rate is set to decrease by about 1% in 2026, dropping from $185.28/kW-year in 2025 to $183.71/kW-year in 2026.
NYSERDA
NY Steps Back from OSW, Halts Offshore Tx Planning Process
The PSC shut down the process to build an underwater transmission network to bring electricity to shore from the hundreds of wind turbines the state hopes to see spinning off its coastline. 
IESO
IESO Planners Using ‘Adaptive Pathways’ to Address Load Growth Uncertainty
IESO transmission planners are using “adaptive pathways” to account for uncertainty over future load growth.
Yes Energy
Industry Experts Find Faults in DOE’s Resource Adequacy Analysis
Industry experts say that while DOE's report points to a well known issue, it focuses only on keeping old plants online instead of needed new capacity.

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