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December 5, 2025

Transmission

IESO
Planners Pick $1.5B Underwater HVDC Line for Toronto’s ‘Third Supply’
IESO system planners recommended the construction of a $1.5 billion HVDC line to meet Toronto’s growing energy needs, saying it would be more “future proof” than two cheaper options.
Shutterstock
Federal Energy Policy News Roundup: House Bills and DOE Returns $13B
Democrats introduced a FERC-heavy bill to control electricity costs, House Energy & Commerce Committee Republicans tout bills passed out of committee, DOE returns $13 billion and some details from the Dallas Fed survey.
MISO
MISO Cuts Renewable Estimates in Tx Planning Scenarios
MISO has slashed earlier renewable energy estimates and boosted natural gas contributions in its transmission planning futures in a rethink brought on by the Trump administration’s One Big Beautiful Bill Act.
Yes Energy
Stakeholder Forum: Surplus Interconnection Can Maximize Capacity in ISO-NE
In New England, rules governing how new resources connect to the regional grid limit full use of the system’s potential. Precious “surplus” capacity can and should be leveraged to interconnect new, low-cost clean energy technologies to deliver more reliable, affordable power, says Alex Lawton.
SPP
SPP Considers Deferring 765-kV NTCs to 2026
SPP says accelerating load projections will result in a 2025 transmission plan that dwarfs the previous year’s record $7.65 billion portfolio — so much so that it is considering deferring some projects until 2026.
Shutterstock
Speculative Data Centers Highlight Need for Effective Forecasting, Experts Say
Utilities face significant forecasting risks from large loads, prompting the industry to develop various strategies to eliminate speculative projects, experts said during a Western Interstate Energy Board webinar.
© RTO Insider 
New England Energy Experts Talk Renewable Development Under Trump
Energy experts and officials stressed the importance of proactive transmission planning, interconnection reform and increased demand-side flexibility at Raab Associates’ New England Electricity Restructuring Roundtable.
NREL
DOE Launches Speed to Power, Eyes Multi-GW Projects
The U.S. Department of Energy is kicking off its Speed to Power initiative by seeking input on large-scale grid projects that would serve large-scale data centers.
ATC and ITC Midwest
House Members Release Bipartisan Permitting Legislation Framework
The bipartisan Problem Solvers Caucus introduced a framework it hopes can lead to permitting legislation this session.
AdminMonitor
Texas PUC Releases Rulemakings for Large Loads
Texas regulators proposed new rules on large load forecasting criteria and net metering following the state’s recent biennial legislative session and opened them up to public comment.

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